diff --git a/src/Components/Endpoints/src/Builder/OpaqueRedirection.cs b/src/Components/Endpoints/src/Builder/OpaqueRedirection.cs
new file mode 100644
index 000000000000..38012c6d01d2
--- /dev/null
+++ b/src/Components/Endpoints/src/Builder/OpaqueRedirection.cs
@@ -0,0 +1,94 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Security.Cryptography;
+using System.Text.Encodings.Web;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.DataProtection;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+
+namespace Microsoft.AspNetCore.Components.Endpoints;
+
+internal partial class OpaqueRedirection
+{
+    // During streaming SSR, a component may try to perform a redirection. Since the response has already started
+    // this can only work if we communicate the redirection back via some command that can get handled by JS,
+    // rather than a true 301/302/etc. But we don't want to disclose the redirection target URL to JS because that
+    // info would not normally be available, e.g., when using 'fetch'. So we data-protect the URL and round trip
+    // through a special endpoint that can issue a true redirection.
+    //
+    // The same is used during enhanced navigation if it happens to go to a Blazor endpoint that calls
+    // NavigationManager.NavigateTo, for the same reasons.
+    //
+    // However, if enhanced navigation goes to a non-Blazor endpoint, the server won't do anything special and just
+    // returns a regular 301/302/etc. To handle this,
+    //
+    //  - If it's redirected to an internal URL, the browser will just follow the redirection automatically
+    //    and client-side code will then:
+    //    - Check if it went to a Blazor endpoint, and if so, simply update the client-side URL to match
+    //    - Or if it's a non-Blazor endpoint, behaves like "external URL" below
+    //  - If it's to an external URL:
+    //    - If it's a GET request, the client-side code will retry as a non-enhanced request
+    //    - For other request types, we have to let it fail as it would be unsafe to retry
+
+    private const string RedirectionDataProtectionProviderPurpose = "Microsoft.AspNetCore.Components.Endpoints.OpaqueRedirection,V1";
+    private const string RedirectionEndpointBaseRelativeUrl = "_framework/opaque-redirect";
+
+    public static string CreateProtectedRedirectionUrl(HttpContext httpContext, string destinationUrl)
+    {
+        var protector = CreateProtector(httpContext);
+        var options = httpContext.RequestServices.GetRequiredService<IOptions<RazorComponentsServiceOptions>>();
+        var lifetime = options.Value.TemporaryRedirectionUrlValidityDuration;
+        var protectedUrl = protector.Protect(destinationUrl, lifetime);
+        return $"{RedirectionEndpointBaseRelativeUrl}?url={UrlEncoder.Default.Encode(protectedUrl)}";
+    }
+
+    public static void AddBlazorOpaqueRedirectionEndpoint(IEndpointRouteBuilder endpoints)
+    {
+        endpoints.MapGet($"/{RedirectionEndpointBaseRelativeUrl}", httpContext =>
+        {
+            if (!httpContext.Request.Query.TryGetValue("url", out var protectedUrl))
+            {
+                httpContext.Response.StatusCode = 400;
+                return Task.CompletedTask;
+            }
+
+            var protector = CreateProtector(httpContext);
+            string url;
+
+            try
+            {
+                url = protector.Unprotect(protectedUrl[0]!);
+            }
+            catch (CryptographicException ex)
+            {
+                if (httpContext.RequestServices.GetService<ILogger<OpaqueRedirection>>() is { } logger)
+                {
+                    Log.OpaqueUrlUnprotectionFailed(logger, ex);
+                }
+
+                httpContext.Response.StatusCode = 400;
+                return Task.CompletedTask;
+            }
+
+            httpContext.Response.Redirect(url);
+            return Task.CompletedTask;
+        });
+    }
+
+    private static ITimeLimitedDataProtector CreateProtector(HttpContext httpContext)
+    {
+        var dataProtectionProvider = httpContext.RequestServices.GetRequiredService<IDataProtectionProvider>();
+        return dataProtectionProvider.CreateProtector(RedirectionDataProtectionProviderPurpose).ToTimeLimitedDataProtector();
+    }
+
+    public static partial class Log
+    {
+        [LoggerMessage(1, LogLevel.Information, "Opaque URL unprotection failed.", EventName = "OpaqueUrlUnprotectionFailed")]
+        public static partial void OpaqueUrlUnprotectionFailed(ILogger<OpaqueRedirection> logger, Exception exception);
+    }
+}
diff --git a/src/Components/Endpoints/src/Builder/RazorComponentsEndpointRouteBuilderExtensions.cs b/src/Components/Endpoints/src/Builder/RazorComponentsEndpointRouteBuilderExtensions.cs
index 91df1b731e8c..d8cfbb5b0d2e 100644
--- a/src/Components/Endpoints/src/Builder/RazorComponentsEndpointRouteBuilderExtensions.cs
+++ b/src/Components/Endpoints/src/Builder/RazorComponentsEndpointRouteBuilderExtensions.cs
@@ -31,6 +31,7 @@ public static class RazorComponentsEndpointRouteBuilderExtensions
 
         EnsureRazorComponentServices(endpoints);
         AddBlazorWebJsEndpoint(endpoints);
+        OpaqueRedirection.AddBlazorOpaqueRedirectionEndpoint(endpoints);
 
         return GetOrCreateDataSource<TRootComponent>(endpoints).DefaultBuilder;
     }
diff --git a/src/Components/Endpoints/src/DependencyInjection/RazorComponentsServiceOptions.cs b/src/Components/Endpoints/src/DependencyInjection/RazorComponentsServiceOptions.cs
index 7d0fda142c1d..b2f8497bd9f8 100644
--- a/src/Components/Endpoints/src/DependencyInjection/RazorComponentsServiceOptions.cs
+++ b/src/Components/Endpoints/src/DependencyInjection/RazorComponentsServiceOptions.cs
@@ -10,6 +10,9 @@ namespace Microsoft.AspNetCore.Components.Endpoints;
 /// </summary>
 public sealed class RazorComponentsServiceOptions
 {
+    // Fairly long default lifetime to allow for clock skew across servers
+    private TimeSpan _temporaryRedirectionUrlValidityDuration = TimeSpan.FromMinutes(5);
+
     internal FormDataMapperOptions _formMappingOptions = new();
 
     /// <summary>
@@ -63,4 +66,20 @@ public int MaxFormMappingKeySize
         get => _formMappingOptions.MaxKeyBufferSize;
         set => _formMappingOptions.MaxKeyBufferSize = value;
     }
+
+    /// <summary>
+    /// Gets or sets the lifetime of data protection validity for temporary redirection URLs
+    /// emitted by Blazor server-side rendering. These are only used transiently so the lifetime
+    /// only needs to be long enough for a client to receive the URL and begin navigation to it.
+    /// However, it should also be long enough to allow for clock skew across servers.
+    /// </summary>
+    public TimeSpan TemporaryRedirectionUrlValidityDuration
+    {
+        get => _temporaryRedirectionUrlValidityDuration;
+        set
+        {
+            ArgumentOutOfRangeException.ThrowIfLessThanOrEqual(value.TotalMilliseconds, 0);
+            _temporaryRedirectionUrlValidityDuration = value;
+        }
+    }
 }
diff --git a/src/Components/Endpoints/src/PublicAPI.Unshipped.txt b/src/Components/Endpoints/src/PublicAPI.Unshipped.txt
index ff9698692651..1e978ea3911a 100644
--- a/src/Components/Endpoints/src/PublicAPI.Unshipped.txt
+++ b/src/Components/Endpoints/src/PublicAPI.Unshipped.txt
@@ -29,6 +29,8 @@ Microsoft.AspNetCore.Components.Endpoints.RazorComponentsServiceOptions.MaxFormM
 Microsoft.AspNetCore.Components.Endpoints.RazorComponentsServiceOptions.MaxFormMappingRecursionDepth.get -> int
 Microsoft.AspNetCore.Components.Endpoints.RazorComponentsServiceOptions.MaxFormMappingRecursionDepth.set -> void
 Microsoft.AspNetCore.Components.Endpoints.RazorComponentsServiceOptions.RazorComponentsServiceOptions() -> void
+Microsoft.AspNetCore.Components.Endpoints.RazorComponentsServiceOptions.TemporaryRedirectionUrlValidityDuration.get -> System.TimeSpan
+Microsoft.AspNetCore.Components.Endpoints.RazorComponentsServiceOptions.TemporaryRedirectionUrlValidityDuration.set -> void
 Microsoft.AspNetCore.Components.Endpoints.RootComponentMetadata
 Microsoft.AspNetCore.Components.Endpoints.RootComponentMetadata.RootComponentMetadata(System.Type! rootComponentType) -> void
 Microsoft.AspNetCore.Components.Endpoints.RootComponentMetadata.Type.get -> System.Type!
diff --git a/src/Components/Endpoints/src/RazorComponentEndpointInvoker.cs b/src/Components/Endpoints/src/RazorComponentEndpointInvoker.cs
index 51eb2d5c551e..7dafc88bafab 100644
--- a/src/Components/Endpoints/src/RazorComponentEndpointInvoker.cs
+++ b/src/Components/Endpoints/src/RazorComponentEndpointInvoker.cs
@@ -35,6 +35,7 @@ private async Task RenderComponentCore(HttpContext context)
     {
         context.Response.ContentType = RazorComponentResultExecutor.DefaultContentType;
         _renderer.InitializeStreamingRenderingFraming(context);
+        EndpointHtmlRenderer.MarkAsAllowingEnhancedNavigation(context);
 
         var endpoint = context.GetEndpoint() ?? throw new InvalidOperationException($"An endpoint must be set on the '{nameof(HttpContext)}'.");
 
diff --git a/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Prerendering.cs b/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Prerendering.cs
index 9a8663ec5098..3b192d99552b 100644
--- a/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Prerendering.cs
+++ b/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Prerendering.cs
@@ -50,6 +50,11 @@ protected override IComponent ResolveComponentForRenderMode([DynamicallyAccessed
         return null;
     }
 
+    public static void MarkAsAllowingEnhancedNavigation(HttpContext context)
+    {
+        context.Response.Headers.Add("blazor-enhanced-nav", "allow");
+    }
+
     public ValueTask<IHtmlAsyncContent> PrerenderComponentAsync(
         HttpContext httpContext,
         [DynamicallyAccessedMembers(Component)] Type componentType,
@@ -149,13 +154,15 @@ public static ValueTask<PrerenderedComponentHtmlContent> HandleNavigationExcepti
                 "Navigation commands can not be issued during server-side prerendering after the response from the server has started. Applications must buffer the" +
                 "response and avoid using features like FlushAsync() before all components on the page have been rendered to prevent failed navigation commands.");
         }
-        else if (IsPossibleExternalDestination(httpContext.Request, navigationException.Location) && httpContext.Request.Headers.ContainsKey("blazor-enhanced-nav"))
+        else if (IsPossibleExternalDestination(httpContext.Request, navigationException.Location)
+            && IsProgressivelyEnhancedNavigation(httpContext.Request))
         {
-            // It's unsafe to do a 301/302/etc to an external destination when this was requested via fetch, because
-            // assuming it doesn't expose CORS headers, we won't be allowed to follow the redirection nor will
-            // we even find out what the destination URL would have been. But since it's our own JS code making this
-            // fetch request, we can have a custom protocol for describing the URL we wanted to redirect to.
-            httpContext.Response.Headers.Add("blazor-enhanced-nav-redirect-location", navigationException.Location);
+            // For progressively-enhanced nav, we prefer to use opaque redirections for external URLs rather than
+            // forcing the request to be retried, since that allows post-redirect-get to work, plus avoids a
+            // duplicated request. The client can't rely on receiving this header, though, since non-Blazor endpoints
+            // wouldn't return it.
+            httpContext.Response.Headers.Add("blazor-enhanced-nav-redirect-location",
+                OpaqueRedirection.CreateProtectedRedirectionUrl(httpContext, navigationException.Location));
             return new ValueTask<PrerenderedComponentHtmlContent>(PrerenderedComponentHtmlContent.Empty);
         }
         else
diff --git a/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Streaming.cs b/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Streaming.cs
index 0b96f6549c7c..5a6d11e5b98d 100644
--- a/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Streaming.cs
+++ b/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Streaming.cs
@@ -15,7 +15,6 @@ namespace Microsoft.AspNetCore.Components.Endpoints;
 
 internal partial class EndpointHtmlRenderer
 {
-    private const string _progressivelyEnhancedNavRequestHeaderName = "blazor-enhanced-nav";
     private const string _streamingRenderingFramingHeaderName = "ssr-framing";
     private TextWriter? _streamingUpdatesWriter;
     private HashSet<int>? _visitedComponentIdsInCurrentStreamingBatch;
@@ -23,7 +22,7 @@ internal partial class EndpointHtmlRenderer
 
     public void InitializeStreamingRenderingFraming(HttpContext httpContext)
     {
-        if (httpContext.Request.Headers.ContainsKey(_progressivelyEnhancedNavRequestHeaderName))
+        if (IsProgressivelyEnhancedNavigation(httpContext.Request))
         {
             var id = Guid.NewGuid().ToString();
             httpContext.Response.Headers.Add(_streamingRenderingFramingHeaderName, id);
@@ -60,7 +59,7 @@ public async Task SendStreamingUpdatesAsync(HttpContext httpContext, Task untilT
         }
         catch (NavigationException navigationException)
         {
-            HandleNavigationAfterResponseStarted(writer, navigationException.Location);
+            HandleNavigationAfterResponseStarted(writer, httpContext, navigationException.Location);
         }
         catch (Exception ex)
         {
@@ -176,10 +175,22 @@ private static void HandleExceptionAfterResponseStarted(HttpContext httpContext,
         writer.Write("</template><blazor-ssr-end></blazor-ssr-end></blazor-ssr>");
     }
 
-    private static void HandleNavigationAfterResponseStarted(TextWriter writer, string destinationUrl)
+    private static void HandleNavigationAfterResponseStarted(TextWriter writer, HttpContext httpContext, string destinationUrl)
     {
-        writer.Write("<blazor-ssr><template type=\"redirection\">");
-        writer.Write(HtmlEncoder.Default.Encode(destinationUrl));
+        writer.Write("<blazor-ssr><template type=\"redirection\"");
+
+        if (string.Equals(httpContext.Request.Method, "POST", StringComparison.OrdinalIgnoreCase))
+        {
+            writer.Write(" from=\"form-post\"");
+        }
+
+        if (IsProgressivelyEnhancedNavigation(httpContext.Request))
+        {
+            writer.Write(" enhanced=\"true\"");
+        }
+
+        writer.Write(">");
+        writer.Write(HtmlEncoder.Default.Encode(OpaqueRedirection.CreateProtectedRedirectionUrl(httpContext, destinationUrl)));
         writer.Write("</template><blazor-ssr-end></blazor-ssr-end></blazor-ssr>");
     }
 
@@ -243,6 +254,13 @@ private void WriteComponentHtml(int componentId, TextWriter output, bool allowBo
         }
     }
 
+    private static bool IsProgressivelyEnhancedNavigation(HttpRequest request)
+    {
+        // For enhanced nav, the Blazor JS code controls the "accept" header precisely, so we can be very specific about the format
+        var accept = request.Headers.Accept;
+        return accept.Count == 1 && string.Equals(accept[0]!, "text/html;blazor-enhanced-nav=on", StringComparison.Ordinal);
+    }
+
     private readonly struct ComponentIdAndDepth
     {
         public int ComponentId { get; }
diff --git a/src/Components/Endpoints/src/Results/RazorComponentResultExecutor.cs b/src/Components/Endpoints/src/Results/RazorComponentResultExecutor.cs
index 5467336e932d..26fcb9cd18be 100644
--- a/src/Components/Endpoints/src/Results/RazorComponentResultExecutor.cs
+++ b/src/Components/Endpoints/src/Results/RazorComponentResultExecutor.cs
@@ -10,6 +10,7 @@
 using Microsoft.Extensions.DependencyInjection;
 using static Microsoft.AspNetCore.Internal.LinkerFlags;
 using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.Components.Endpoints.Rendering;
 
 namespace Microsoft.AspNetCore.Components.Endpoints;
 
@@ -46,6 +47,7 @@ private static Task RenderComponentToResponse(
         return endpointHtmlRenderer.Dispatcher.InvokeAsync(async () =>
         {
             endpointHtmlRenderer.InitializeStreamingRenderingFraming(httpContext);
+            EndpointHtmlRenderer.MarkAsAllowingEnhancedNavigation(httpContext);
 
             // We could pool these dictionary instances if we wanted, and possibly even the ParameterView
             // backing buffers could come from a pool like they do during rendering.
@@ -55,7 +57,10 @@ private static Task RenderComponentToResponse(
                 { nameof(RazorComponentEndpointHost.ComponentParameters), componentParameters },
             });
 
-            await using var writer = CreateResponseWriter(httpContext.Response.Body);
+            // Matches MVC's MemoryPoolHttpResponseStreamWriterFactory.DefaultBufferSize
+            var defaultBufferSize = 16 * 1024;
+            await using var writer = new HttpResponseStreamWriter(httpContext.Response.Body, Encoding.UTF8, defaultBufferSize, ArrayPool<byte>.Shared, ArrayPool<char>.Shared);
+            using var bufferWriter = new BufferedTextWriter(writer);
 
             // Note that we don't set any interactive rendering mode for the top-level output from a RazorComponentResult,
             // because you never want to serialize the invocation of RazorComponentResultHost. Instead, that host
@@ -71,24 +76,17 @@ private static Task RenderComponentToResponse(
             // in between the first call to htmlContent.WriteTo and the point where we start listening for subsequent
             // streaming SSR batches (inside SendStreamingUpdatesAsync). Otherwise some other code might dispatch to the
             // renderer sync context and cause a batch that would get missed.
-            htmlContent.WriteTo(writer, HtmlEncoder.Default); // Don't use WriteToAsync, as per the comment above
+            htmlContent.WriteTo(bufferWriter, HtmlEncoder.Default); // Don't use WriteToAsync, as per the comment above
 
-            if (!htmlContent.QuiescenceTask.IsCompleted)
+            if (!htmlContent.QuiescenceTask.IsCompletedSuccessfully)
             {
-                await endpointHtmlRenderer.SendStreamingUpdatesAsync(httpContext, htmlContent.QuiescenceTask, writer);
+                await endpointHtmlRenderer.SendStreamingUpdatesAsync(httpContext, htmlContent.QuiescenceTask, bufferWriter);
             }
 
             // Invoke FlushAsync to ensure any buffered content is asynchronously written to the underlying
             // response asynchronously. In the absence of this line, the buffer gets synchronously written to the
             // response as part of the Dispose which has a perf impact.
-            await writer.FlushAsync();
+            await bufferWriter.FlushAsync();
         });
     }
-
-    private static TextWriter CreateResponseWriter(Stream bodyStream)
-    {
-        // Matches MVC's MemoryPoolHttpResponseStreamWriterFactory.DefaultBufferSize
-        const int DefaultBufferSize = 16 * 1024;
-        return new HttpResponseStreamWriter(bodyStream, Encoding.UTF8, DefaultBufferSize, ArrayPool<byte>.Shared, ArrayPool<char>.Shared);
-    }
 }
diff --git a/src/Components/Endpoints/test/RazorComponentResultTest.cs b/src/Components/Endpoints/test/RazorComponentResultTest.cs
index ee307027ea9f..9d2c9c45cb37 100644
--- a/src/Components/Endpoints/test/RazorComponentResultTest.cs
+++ b/src/Components/Endpoints/test/RazorComponentResultTest.cs
@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.Components.Endpoints.Forms;
@@ -102,6 +101,7 @@ public async Task PerformsStreamingRendering()
         var result = new RazorComponentResult(typeof(StreamingAsyncLoadingComponent),
             PropertyHelper.ObjectToDictionary(new { LoadingTask = tcs.Task }).AsReadOnly());
         var completionTask = result.ExecuteAsync(httpContext);
+        await WaitForContentWrittenAsync(responseBody);
         Assert.Equal(
             "<!--bl:X-->Loading task status: WaitingForActivation<!--/bl:X-->",
             MaskComponentIds(GetStringContent(responseBody)));
@@ -132,6 +132,7 @@ public async Task EmitsEachComponentOnlyOncePerStreamingUpdate_WhenAComponentRen
         var result = new RazorComponentResult(typeof(DoubleRenderingStreamingAsyncComponent),
             PropertyHelper.ObjectToDictionary(new { WaitFor = tcs.Task }).AsReadOnly());
         var completionTask = result.ExecuteAsync(httpContext);
+        await WaitForContentWrittenAsync(responseBody);
         Assert.Equal(
             "<!--bl:X-->Loading...<!--/bl:X-->",
             MaskComponentIds(GetStringContent(responseBody)));
@@ -162,11 +163,12 @@ public async Task EmitsEachComponentOnlyOncePerStreamingUpdate_WhenAnAncestorAls
         var result = new RazorComponentResult(typeof(StreamingComponentWithChild),
             PropertyHelper.ObjectToDictionary(new { LoadingTask = tcs.Task }).AsReadOnly());
         var completionTask = result.ExecuteAsync(httpContext);
+        await WaitForContentWrittenAsync(responseBody);
         var expectedInitialHtml = "<!--bl:X-->[LoadingTask: WaitingForActivation]\n<!--bl:X-->[Child render: 1]\n<!--/bl:X--><!--/bl:X-->";
         Assert.Equal(
             expectedInitialHtml,
             MaskComponentIds(GetStringContent(responseBody)));
-
+        
         // Act/Assert 2: When loading completes, it emits a streaming batch update in which the
         // child is present only within the parent markup, not as a separate entry
         tcs.SetResult();
@@ -265,9 +267,13 @@ public async Task OnNavigationAfterResponseStarted_WithStreamingOn_EmitsCommand(
         await new RazorComponentResult(typeof(StreamingComponentThatRedirectsAsynchronously)).ExecuteAsync(httpContext);
 
         // Assert
-        Assert.Equal(
-            $"<!--bl:X-->Some output\n<!--/bl:X--><blazor-ssr><template type=\"redirection\">https://test/somewhere/else</template><blazor-ssr-end></blazor-ssr-end></blazor-ssr>",
-            MaskComponentIds(GetStringContent(responseBody)));
+        var markup = MaskComponentIds(GetStringContent(responseBody));
+        Assert.StartsWith(
+            "<!--bl:X-->Some output\n<!--/bl:X--><blazor-ssr><template type=\"redirection\">_framework/opaque-redirect?url=",
+            markup);
+        Assert.EndsWith(
+            "</template><blazor-ssr-end></blazor-ssr-end></blazor-ssr>",
+            markup);
     }
 
     [Fact]
@@ -341,6 +347,7 @@ public async Task StreamingRendering_IsOffByDefault_AndCanBeEnabledForSubtree()
         // Act/Assert: Produce initial output, noting absence of streaming markers at top level
         testContext.TopLevelComponentTask.SetResult();
         await initialOutputTask;
+        await WaitForContentWrittenAsync(testContext.ResponseBody);
         var html = MaskComponentIds(GetStringContent(testContext.ResponseBody));
         Assert.StartsWith("[Top level component: Loaded]", html);
         Assert.Contains("[Within streaming region: <!--bl:X-->Loading...<!--/bl:X-->]", html);
@@ -372,6 +379,7 @@ public async Task StreamingRendering_CanBeDisabledForSubtree()
         // Act/Assert: Does produce output when nonstreaming subtree is quiescent
         testContext.WithinNestedNonstreamingRegionTask.SetResult();
         await initialOutputTask;
+        await WaitForContentWrittenAsync(testContext.ResponseBody);
         var html = MaskComponentIds(GetStringContent(testContext.ResponseBody));
         Assert.Contains("[Within streaming region: <!--bl:X-->Loading...<!--/bl:X-->]", html);
         Assert.DoesNotContain("blazor-ssr", html);
@@ -464,6 +472,27 @@ public static DefaultHttpContext GetTestHttpContext(string environmentName = nul
         return result;
     }
 
+    // Some tests want to observe the output state when some content has been written, but without waiting for
+    // the whole streaming task to complete. There isn't any public API that exposes this specific phase, so
+    // rather than making the renderer track additional tasks that would only be used in tests, this allows the
+    // tests to continue once the first batch of output was written.
+    private static async Task WaitForContentWrittenAsync(Stream stream, TimeSpan? timeout = default)
+    {
+        var timeoutRemaining = timeout.GetValueOrDefault(TimeSpan.FromSeconds(1));
+        var pollInterval = TimeSpan.FromMilliseconds(50);
+        do
+        {
+            if (stream.Position > 0)
+            {
+                return;
+            }
+            await Task.Delay(pollInterval);
+            timeoutRemaining = timeoutRemaining - pollInterval;
+        } while (timeoutRemaining.TotalMilliseconds > 0);
+
+        Assert.Fail("Timeout elapsed without content being written");
+    }
+
     class FakeDataProtectionProvider : IDataProtectionProvider
     {
         public IDataProtector CreateProtector(string purpose)
@@ -471,8 +500,8 @@ public IDataProtector CreateProtector(string purpose)
 
         class FakeDataProtector : IDataProtector
         {
-            public IDataProtector CreateProtector(string purpose) => throw new NotImplementedException();
-            public byte[] Protect(byte[] plaintext) => throw new NotImplementedException();
+            public IDataProtector CreateProtector(string purpose) => this;
+            public byte[] Protect(byte[] plaintext) => new byte[] { 1, 2, 3 };
             public byte[] Unprotect(byte[] protectedData) => throw new NotImplementedException();
         }
     }
diff --git a/src/Components/Web.JS/dist/Release/blazor.web.js b/src/Components/Web.JS/dist/Release/blazor.web.js
index 6eff4c426880..fb5f058c8638 100644
--- a/src/Components/Web.JS/dist/Release/blazor.web.js
+++ b/src/Components/Web.JS/dist/Release/blazor.web.js
@@ -1 +1 @@
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Wt(){if(!Ut.isNode)return"";switch(process.platform){case"win32":return"Windows NT";case"darwin":return"macOS";case"linux":return"Linux";default:return process.platform}}function qt(){if(Ut.isNode)return process.versions.node}function zt(e){return e.stack?e.stack:e.message?e.message:`${e}`}class Jt{writeHandshakeRequest(e){return xt.write(JSON.stringify(e))}parseHandshakeResponse(e){let t,n;if(Bt(e)){const o=new Uint8Array(e),r=o.indexOf(xt.RecordSeparatorCode);if(-1===r)throw new Error("Message is incomplete.");const s=r+1;t=String.fromCharCode.apply(null,Array.prototype.slice.call(o.slice(0,s))),n=o.byteLength>s?o.slice(s).buffer:null}else{const o=e,r=o.indexOf(xt.RecordSeparator);if(-1===r)throw new Error("Message is incomplete.");const s=r+1;t=o.substring(0,s),n=o.length>s?o.substring(s):null}const o=xt.parse(t),r=JSON.parse(o[0]);if(r.type)throw new Error("Expected a handshake response from the server.");return[n,r]}}class Kt extends Error{constructor(e,t){const n=new.target.prototype;super(`${e}: Status code '${t}'`),this.statusCode=t,this.__proto__=n}}class Vt extends Error{constructor(e="A timeout occurred."){const t=new.target.prototype;super(e),this.__proto__=t}}class Xt extends Error{constructor(e="An abort occurred."){const t=new.target.prototype;super(e),this.__proto__=t}}class Gt extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.transport=t,this.errorType="UnsupportedTransportError",this.__proto__=n}}class Yt extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.transport=t,this.errorType="DisabledTransportError",this.__proto__=n}}class Qt extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.transport=t,this.errorType="FailedToStartTransportError",this.__proto__=n}}class Zt extends Error{constructor(e){const t=new.target.prototype;super(e),this.errorType="FailedToNegotiateWithServerError",this.__proto__=t}}class en extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.innerErrors=t,this.__proto__=n}}var tn,nn;!function(e){e[e.Invocation=1]="Invocation",e[e.StreamItem=2]="StreamItem",e[e.Completion=3]="Completion",e[e.StreamInvocation=4]="StreamInvocation",e[e.CancelInvocation=5]="CancelInvocation",e[e.Ping=6]="Ping",e[e.Close=7]="Close",e[e.Ack=8]="Ack",e[e.Sequence=9]="Sequence"}(tn||(tn={}));class on{constructor(){this.observers=[]}next(e){for(const t of this.observers)t.next(e)}error(e){for(const t of this.observers)t.error&&t.error(e)}complete(){for(const e of this.observers)e.complete&&e.complete()}subscribe(e){return this.observers.push(e),new Ot(this,e)}}class rn{constructor(e,t,n){this._bufferSize=1e5,this._messages=[],this._totalMessageCount=0,this._waitForSequenceMessage=!1,this._nextReceivingSequenceId=1,this._latestReceivedSequenceId=0,this._bufferedByteCount=0,this._reconnectInProgress=!1,this._protocol=e,this._connection=t,this._bufferSize=n}async _send(e){const t=this._protocol.writeMessage(e);let n=Promise.resolve();if(this._isInvocationMessage(e)){this._totalMessageCount++;let e=()=>{},o=()=>{};Bt(t)?this._bufferedByteCount+=t.byteLength:this._bufferedByteCount+=t.length,this._bufferedByteCount>=this._bufferSize&&(n=new Promise(((t,n)=>{e=t,o=n}))),this._messages.push(new sn(t,this._totalMessageCount,e,o))}try{this._reconnectInProgress||await this._connection.send(t)}catch{this._disconnected()}await n}_ack(e){let t=-1;for(let n=0;n<this._messages.length;n++){const o=this._messages[n];if(o._id<=e.sequenceId)t=n,Bt(o._message)?this._bufferedByteCount-=o._message.byteLength:this._bufferedByteCount-=o._message.length,o._resolver();else{if(!(this._bufferedByteCount<this._bufferSize))break;o._resolver()}}-1!==t&&(this._messages=this._messages.slice(t+1))}_shouldProcessMessage(e){if(this._waitForSequenceMessage)return e.type===tn.Sequence&&(this._waitForSequenceMessage=!1,!0);if(!this._isInvocationMessage(e))return!0;const t=this._nextReceivingSequenceId;return this._nextReceivingSequenceId++,t<=this._latestReceivedSequenceId?(t===this._latestReceivedSequenceId&&this._ackTimer(),!1):(this._latestReceivedSequenceId=t,this._ackTimer(),!0)}_resetSequence(e){e.sequenceId>this._nextReceivingSequenceId?this._connection.stop(new Error("Sequence ID greater than amount of messages we've received.")):this._nextReceivingSequenceId=e.sequenceId}_disconnected(){this._reconnectInProgress=!0,this._waitForSequenceMessage=!0}async _resend(){const e=0!==this._messages.length?this._messages[0]._id:this._totalMessageCount+1;await this._connection.send(this._protocol.writeMessage({type:tn.Sequence,sequenceId:e}));const t=this._messages;for(const e of t)await this._connection.send(e._message);this._reconnectInProgress=!1}_dispose(e){null!=e||(e=new Error("Unable to reconnect to server."));for(const t of this._messages)t._rejector(e)}_isInvocationMessage(e){switch(e.type){case tn.Invocation:case tn.StreamItem:case tn.Completion:case tn.StreamInvocation:case tn.CancelInvocation:return!0;case tn.Close:case tn.Sequence:case tn.Ping:case tn.Ack:return!1}}_ackTimer(){void 0===this._ackTimerHandle&&(this._ackTimerHandle=setTimeout((async()=>{try{this._reconnectInProgress||await this._connection.send(this._protocol.writeMessage({type:tn.Ack,sequenceId:this._latestReceivedSequenceId}))}catch{}clearTimeout(this._ackTimerHandle),this._ackTimerHandle=void 0}),1e3))}}class sn{constructor(e,t,n,o){this._message=e,this._id=t,this._resolver=n,this._rejector=o}}!function(e){e.Disconnected="Disconnected",e.Connecting="Connecting",e.Connected="Connected",e.Disconnecting="Disconnecting",e.Reconnecting="Reconnecting"}(nn||(nn={}));class an{static create(e,t,n,o,r,s,i){return new an(e,t,n,o,r,s,i)}constructor(e,t,n,o,r,s,i){this._nextKeepAlive=0,this._freezeEventListener=()=>{this._logger.log(At.Warning,"The page is being frozen, this will likely lead to the connection being closed and messages being lost. For more information see the docs at https://learn.microsoft.com/aspnet/core/signalr/javascript-client#bsleep")},Mt.isRequired(e,"connection"),Mt.isRequired(t,"logger"),Mt.isRequired(n,"protocol"),this.serverTimeoutInMilliseconds=null!=r?r:3e4,this.keepAliveIntervalInMilliseconds=null!=s?s:15e3,this._statefulReconnectBufferSize=null!=i?i:1e5,this._logger=t,this._protocol=n,this.connection=e,this._reconnectPolicy=o,this._handshakeProtocol=new Jt,this.connection.onreceive=e=>this._processIncomingData(e),this.connection.onclose=e=>this._connectionClosed(e),this._callbacks={},this._methods={},this._closedCallbacks=[],this._reconnectingCallbacks=[],this._reconnectedCallbacks=[],this._invocationId=0,this._receivedHandshakeResponse=!1,this._connectionState=nn.Disconnected,this._connectionStarted=!1,this._cachedPingMessage=this._protocol.writeMessage({type:tn.Ping})}get state(){return this._connectionState}get connectionId(){return this.connection&&this.connection.connectionId||null}get baseUrl(){return this.connection.baseUrl||""}set baseUrl(e){if(this._connectionState!==nn.Disconnected&&this._connectionState!==nn.Reconnecting)throw new Error("The HubConnection must be in the Disconnected or Reconnecting state to change the url.");if(!e)throw new Error("The HubConnection url must be a valid url.");this.connection.baseUrl=e}start(){return this._startPromise=this._startWithStateTransitions(),this._startPromise}async _startWithStateTransitions(){if(this._connectionState!==nn.Disconnected)return Promise.reject(new Error("Cannot start a HubConnection that is not in the 'Disconnected' state."));this._connectionState=nn.Connecting,this._logger.log(At.Debug,"Starting HubConnection.");try{await this._startInternal(),Ut.isBrowser&&window.document.addEventListener("freeze",this._freezeEventListener),this._connectionState=nn.Connected,this._connectionStarted=!0,this._logger.log(At.Debug,"HubConnection connected successfully.")}catch(e){return this._connectionState=nn.Disconnected,this._logger.log(At.Debug,`HubConnection failed to start successfully because of error '${e}'.`),Promise.reject(e)}}async _startInternal(){this._stopDuringStartError=void 0,this._receivedHandshakeResponse=!1;const e=new Promise(((e,t)=>{this._handshakeResolver=e,this._handshakeRejecter=t}));await this.connection.start(this._protocol.transferFormat);try{const t={protocol:this._protocol.name,version:this._protocol.version};if(this._logger.log(At.Debug,"Sending handshake request."),await this._sendMessage(this._handshakeProtocol.writeHandshakeRequest(t)),this._logger.log(At.Information,`Using HubProtocol '${this._protocol.name}'.`),this._cleanupTimeout(),this._resetTimeoutPeriod(),this._resetKeepAliveInterval(),await e,this._stopDuringStartError)throw this._stopDuringStartError;!!this.connection.features.reconnect&&(this._messageBuffer=new rn(this._protocol,this.connection,this._statefulReconnectBufferSize),this.connection.features.disconnected=this._messageBuffer._disconnected.bind(this._messageBuffer),this.connection.features.resend=()=>{if(this._messageBuffer)return this._messageBuffer._resend()}),this.connection.features.inherentKeepAlive||await this._sendMessage(this._cachedPingMessage)}catch(e){throw this._logger.log(At.Debug,`Hub handshake failed with error '${e}' during start(). Stopping HubConnection.`),this._cleanupTimeout(),this._cleanupPingTimer(),await this.connection.stop(e),e}}async stop(){const e=this._startPromise;this.connection.features.reconnect=!1,this._stopPromise=this._stopInternal(),await this._stopPromise;try{await e}catch(e){}}_stopInternal(e){if(this._connectionState===nn.Disconnected)return this._logger.log(At.Debug,`Call to HubConnection.stop(${e}) ignored because it is already in the disconnected state.`),Promise.resolve();if(this._connectionState===nn.Disconnecting)return this._logger.log(At.Debug,`Call to HttpConnection.stop(${e}) ignored because the connection is already in the disconnecting state.`),this._stopPromise;const t=this._connectionState;return this._connectionState=nn.Disconnecting,this._logger.log(At.Debug,"Stopping HubConnection."),this._reconnectDelayHandle?(this._logger.log(At.Debug,"Connection stopped during reconnect delay. Done reconnecting."),clearTimeout(this._reconnectDelayHandle),this._reconnectDelayHandle=void 0,this._completeClose(),Promise.resolve()):(t===nn.Connected&&this._sendCloseMessage(),this._cleanupTimeout(),this._cleanupPingTimer(),this._stopDuringStartError=e||new Xt("The connection was stopped before the hub handshake could complete."),this.connection.stop(e))}async _sendCloseMessage(){try{await this._sendWithProtocol(this._createCloseMessage())}catch{}}stream(e,...t){const[n,o]=this._replaceStreamingParams(t),r=this._createStreamInvocation(e,t,o);let s;const i=new on;return i.cancelCallback=()=>{const e=this._createCancelInvocation(r.invocationId);return delete this._callbacks[r.invocationId],s.then((()=>this._sendWithProtocol(e)))},this._callbacks[r.invocationId]=(e,t)=>{t?i.error(t):e&&(e.type===tn.Completion?e.error?i.error(new Error(e.error)):i.complete():i.next(e.item))},s=this._sendWithProtocol(r).catch((e=>{i.error(e),delete this._callbacks[r.invocationId]})),this._launchStreams(n,s),i}_sendMessage(e){return this._resetKeepAliveInterval(),this.connection.send(e)}_sendWithProtocol(e){return this._messageBuffer?this._messageBuffer._send(e):this._sendMessage(this._protocol.writeMessage(e))}send(e,...t){const[n,o]=this._replaceStreamingParams(t),r=this._sendWithProtocol(this._createInvocation(e,t,!0,o));return this._launchStreams(n,r),r}invoke(e,...t){const[n,o]=this._replaceStreamingParams(t),r=this._createInvocation(e,t,!1,o);return new Promise(((e,t)=>{this._callbacks[r.invocationId]=(n,o)=>{o?t(o):n&&(n.type===tn.Completion?n.error?t(new Error(n.error)):e(n.result):t(new Error(`Unexpected message type: ${n.type}`)))};const o=this._sendWithProtocol(r).catch((e=>{t(e),delete this._callbacks[r.invocationId]}));this._launchStreams(n,o)}))}on(e,t){e&&t&&(e=e.toLowerCase(),this._methods[e]||(this._methods[e]=[]),-1===this._methods[e].indexOf(t)&&this._methods[e].push(t))}off(e,t){if(!e)return;e=e.toLowerCase();const n=this._methods[e];if(n)if(t){const o=n.indexOf(t);-1!==o&&(n.splice(o,1),0===n.length&&delete this._methods[e])}else delete this._methods[e]}onclose(e){e&&this._closedCallbacks.push(e)}onreconnecting(e){e&&this._reconnectingCallbacks.push(e)}onreconnected(e){e&&this._reconnectedCallbacks.push(e)}_processIncomingData(e){if(this._cleanupTimeout(),this._receivedHandshakeResponse||(e=this._processHandshakeResponse(e),this._receivedHandshakeResponse=!0),e){const t=this._protocol.parseMessages(e,this._logger);for(const e of t)if(!this._messageBuffer||this._messageBuffer._shouldProcessMessage(e))switch(e.type){case tn.Invocation:this._invokeClientMethod(e);break;case tn.StreamItem:case tn.Completion:{const t=this._callbacks[e.invocationId];if(t){e.type===tn.Completion&&delete this._callbacks[e.invocationId];try{t(e)}catch(e){this._logger.log(At.Error,`Stream callback threw error: ${zt(e)}`)}}break}case tn.Ping:break;case tn.Close:{this._logger.log(At.Information,"Close message received from server.");const t=e.error?new Error("Server returned an error on close: "+e.error):void 0;!0===e.allowReconnect?this.connection.stop(t):this._stopPromise=this._stopInternal(t);break}case tn.Ack:this._messageBuffer&&this._messageBuffer._ack(e);break;case tn.Sequence:this._messageBuffer&&this._messageBuffer._resetSequence(e);break;default:this._logger.log(At.Warning,`Invalid message type: ${e.type}.`)}}this._resetTimeoutPeriod()}_processHandshakeResponse(e){let t,n;try{[n,t]=this._handshakeProtocol.parseHandshakeResponse(e)}catch(e){const t="Error parsing handshake response: "+e;this._logger.log(At.Error,t);const n=new Error(t);throw this._handshakeRejecter(n),n}if(t.error){const e="Server returned handshake error: "+t.error;this._logger.log(At.Error,e);const n=new Error(e);throw this._handshakeRejecter(n),n}return this._logger.log(At.Debug,"Server handshake complete."),this._handshakeResolver(),n}_resetKeepAliveInterval(){this.connection.features.inherentKeepAlive||(this._nextKeepAlive=(new Date).getTime()+this.keepAliveIntervalInMilliseconds,this._cleanupPingTimer())}_resetTimeoutPeriod(){if(!(this.connection.features&&this.connection.features.inherentKeepAlive||(this._timeoutHandle=setTimeout((()=>this.serverTimeout()),this.serverTimeoutInMilliseconds),void 0!==this._pingServerHandle))){let e=this._nextKeepAlive-(new Date).getTime();e<0&&(e=0),this._pingServerHandle=setTimeout((async()=>{if(this._connectionState===nn.Connected)try{await this._sendMessage(this._cachedPingMessage)}catch{this._cleanupPingTimer()}}),e)}}serverTimeout(){this.connection.stop(new Error("Server timeout elapsed without receiving a message from the server."))}async _invokeClientMethod(e){const t=e.target.toLowerCase(),n=this._methods[t];if(!n)return this._logger.log(At.Warning,`No client method with the name '${t}' found.`),void(e.invocationId&&(this._logger.log(At.Warning,`No result given for '${t}' method and invocation ID '${e.invocationId}'.`),await this._sendWithProtocol(this._createCompletionMessage(e.invocationId,"Client didn't provide a result.",null))));const o=n.slice(),r=!!e.invocationId;let s,i,a;for(const n of o)try{const o=s;s=await n.apply(this,e.arguments),r&&s&&o&&(this._logger.log(At.Error,`Multiple results provided for '${t}'. Sending error to server.`),a=this._createCompletionMessage(e.invocationId,"Client provided multiple results.",null)),i=void 0}catch(e){i=e,this._logger.log(At.Error,`A callback for the method '${t}' threw error '${e}'.`)}a?await this._sendWithProtocol(a):r?(i?a=this._createCompletionMessage(e.invocationId,`${i}`,null):void 0!==s?a=this._createCompletionMessage(e.invocationId,null,s):(this._logger.log(At.Warning,`No result given for '${t}' method and invocation ID '${e.invocationId}'.`),a=this._createCompletionMessage(e.invocationId,"Client didn't provide a result.",null)),await this._sendWithProtocol(a)):s&&this._logger.log(At.Error,`Result given for '${t}' method but server is not expecting a result.`)}_connectionClosed(e){this._logger.log(At.Debug,`HubConnection.connectionClosed(${e}) called while in state ${this._connectionState}.`),this._stopDuringStartError=this._stopDuringStartError||e||new Xt("The underlying connection was closed before the hub handshake could complete."),this._handshakeResolver&&this._handshakeResolver(),this._cancelCallbacksWithError(e||new Error("Invocation canceled due to the underlying connection being closed.")),this._cleanupTimeout(),this._cleanupPingTimer(),this._connectionState===nn.Disconnecting?this._completeClose(e):this._connectionState===nn.Connected&&this._reconnectPolicy?this._reconnect(e):this._connectionState===nn.Connected&&this._completeClose(e)}_completeClose(e){if(this._connectionStarted){this._connectionState=nn.Disconnected,this._connectionStarted=!1,this._messageBuffer&&(this._messageBuffer._dispose(null!=e?e:new Error("Connection closed.")),this._messageBuffer=void 0),Ut.isBrowser&&window.document.removeEventListener("freeze",this._freezeEventListener);try{this._closedCallbacks.forEach((t=>t.apply(this,[e])))}catch(t){this._logger.log(At.Error,`An onclose callback called with error '${e}' threw error '${t}'.`)}}}async _reconnect(e){const t=Date.now();let n=0,o=void 0!==e?e:new Error("Attempting to reconnect due to a unknown error."),r=this._getNextRetryDelay(n++,0,o);if(null===r)return this._logger.log(At.Debug,"Connection not reconnecting because the IRetryPolicy returned null on the first reconnect attempt."),void this._completeClose(e);if(this._connectionState=nn.Reconnecting,e?this._logger.log(At.Information,`Connection reconnecting because of error '${e}'.`):this._logger.log(At.Information,"Connection reconnecting."),0!==this._reconnectingCallbacks.length){try{this._reconnectingCallbacks.forEach((t=>t.apply(this,[e])))}catch(t){this._logger.log(At.Error,`An onreconnecting callback called with error '${e}' threw error '${t}'.`)}if(this._connectionState!==nn.Reconnecting)return void this._logger.log(At.Debug,"Connection left the reconnecting state in onreconnecting callback. Done reconnecting.")}for(;null!==r;){if(this._logger.log(At.Information,`Reconnect attempt number ${n} will start in ${r} ms.`),await new Promise((e=>{this._reconnectDelayHandle=setTimeout(e,r)})),this._reconnectDelayHandle=void 0,this._connectionState!==nn.Reconnecting)return void this._logger.log(At.Debug,"Connection left the reconnecting state during reconnect delay. Done reconnecting.");try{if(await this._startInternal(),this._connectionState=nn.Connected,this._logger.log(At.Information,"HubConnection reconnected successfully."),0!==this._reconnectedCallbacks.length)try{this._reconnectedCallbacks.forEach((e=>e.apply(this,[this.connection.connectionId])))}catch(e){this._logger.log(At.Error,`An onreconnected callback called with connectionId '${this.connection.connectionId}; threw error '${e}'.`)}return}catch(e){if(this._logger.log(At.Information,`Reconnect attempt failed because of error '${e}'.`),this._connectionState!==nn.Reconnecting)return this._logger.log(At.Debug,`Connection moved to the '${this._connectionState}' from the reconnecting state during reconnect attempt. Done reconnecting.`),void(this._connectionState===nn.Disconnecting&&this._completeClose());o=e instanceof Error?e:new Error(e.toString()),r=this._getNextRetryDelay(n++,Date.now()-t,o)}}this._logger.log(At.Information,`Reconnect retries have been exhausted after ${Date.now()-t} ms and ${n} failed attempts. Connection disconnecting.`),this._completeClose()}_getNextRetryDelay(e,t,n){try{return this._reconnectPolicy.nextRetryDelayInMilliseconds({elapsedMilliseconds:t,previousRetryCount:e,retryReason:n})}catch(n){return this._logger.log(At.Error,`IRetryPolicy.nextRetryDelayInMilliseconds(${e}, ${t}) threw error '${n}'.`),null}}_cancelCallbacksWithError(e){const t=this._callbacks;this._callbacks={},Object.keys(t).forEach((n=>{const o=t[n];try{o(null,e)}catch(t){this._logger.log(At.Error,`Stream 'error' callback called with '${e}' threw error: ${zt(t)}`)}}))}_cleanupPingTimer(){this._pingServerHandle&&(clearTimeout(this._pingServerHandle),this._pingServerHandle=void 0)}_cleanupTimeout(){this._timeoutHandle&&clearTimeout(this._timeoutHandle)}_createInvocation(e,t,n,o){if(n)return 0!==o.length?{arguments:t,streamIds:o,target:e,type:tn.Invocation}:{arguments:t,target:e,type:tn.Invocation};{const n=this._invocationId;return this._invocationId++,0!==o.length?{arguments:t,invocationId:n.toString(),streamIds:o,target:e,type:tn.Invocation}:{arguments:t,invocationId:n.toString(),target:e,type:tn.Invocation}}}_launchStreams(e,t){if(0!==e.length){t||(t=Promise.resolve());for(const n in e)e[n].subscribe({complete:()=>{t=t.then((()=>this._sendWithProtocol(this._createCompletionMessage(n))))},error:e=>{let o;o=e instanceof Error?e.message:e&&e.toString?e.toString():"Unknown error",t=t.then((()=>this._sendWithProtocol(this._createCompletionMessage(n,o))))},next:e=>{t=t.then((()=>this._sendWithProtocol(this._createStreamItemMessage(n,e))))}})}}_replaceStreamingParams(e){const t=[],n=[];for(let o=0;o<e.length;o++){const r=e[o];if(this._isObservable(r)){const s=this._invocationId;this._invocationId++,t[s]=r,n.push(s.toString()),e.splice(o,1)}}return[t,n]}_isObservable(e){return e&&e.subscribe&&"function"==typeof e.subscribe}_createStreamInvocation(e,t,n){const o=this._invocationId;return this._invocationId++,0!==n.length?{arguments:t,invocationId:o.toString(),streamIds:n,target:e,type:tn.StreamInvocation}:{arguments:t,invocationId:o.toString(),target:e,type:tn.StreamInvocation}}_createCancelInvocation(e){return{invocationId:e,type:tn.CancelInvocation}}_createStreamItemMessage(e,t){return{invocationId:e,item:t,type:tn.StreamItem}}_createCompletionMessage(e,t,n){return t?{error:t,invocationId:e,type:tn.Completion}:{invocationId:e,result:n,type:tn.Completion}}_createCloseMessage(){return{type:tn.Close}}}const cn=[0,2e3,1e4,3e4,null];class ln{constructor(e){this._retryDelays=void 0!==e?[...e,null]:cn}nextRetryDelayInMilliseconds(e){return this._retryDelays[e.previousRetryCount]}}class hn{}hn.Authorization="Authorization",hn.Cookie="Cookie";class dn{constructor(e,t,n){this.statusCode=e,this.statusText=t,this.content=n}}class un{get(e,t){return this.send({...t,method:"GET",url:e})}post(e,t){return this.send({...t,method:"POST",url:e})}delete(e,t){return this.send({...t,method:"DELETE",url:e})}getCookieString(e){return""}}class pn extends un{constructor(e,t){super(),this._innerClient=e,this._accessTokenFactory=t}async send(e){let t=!0;this._accessTokenFactory&&(!this._accessToken||e.url&&e.url.indexOf("/negotiate?")>0)&&(t=!1,this._accessToken=await this._accessTokenFactory()),this._setAuthorizationHeader(e);const n=await this._innerClient.send(e);return t&&401===n.statusCode&&this._accessTokenFactory?(this._accessToken=await this._accessTokenFactory(),this._setAuthorizationHeader(e),await this._innerClient.send(e)):n}_setAuthorizationHeader(e){e.headers||(e.headers={}),this._accessToken?e.headers[hn.Authorization]=`Bearer ${this._accessToken}`:this._accessTokenFactory&&e.headers[hn.Authorization]&&delete e.headers[hn.Authorization]}getCookieString(e){return this._innerClient.getCookieString(e)}}class fn extends un{constructor(e){super(),this._logger=e;const t={_fetchType:void 0,_jar:void 0};var o;o=t,"undefined"==typeof fetch&&(o._jar=new(n(628).CookieJar),"undefined"==typeof fetch?o._fetchType=n(200):o._fetchType=fetch,o._fetchType=n(203)(o._fetchType,o._jar),1)?(this._fetchType=t._fetchType,this._jar=t._jar):this._fetchType=fetch.bind(function(){if("undefined"!=typeof globalThis)return globalThis;if("undefined"!=typeof self)return self;if("undefined"!=typeof window)return window;if(void 0!==n.g)return n.g;throw new Error("could not find global")}()),this._abortControllerType=AbortController;const r={_abortControllerType:this._abortControllerType};(function(e){return"undefined"==typeof AbortController&&(e._abortControllerType=n(778),!0)})(r)&&(this._abortControllerType=r._abortControllerType)}async send(e){if(e.abortSignal&&e.abortSignal.aborted)throw new Xt;if(!e.method)throw new Error("No method defined.");if(!e.url)throw new Error("No url defined.");const t=new this._abortControllerType;let n;e.abortSignal&&(e.abortSignal.onabort=()=>{t.abort(),n=new Xt});let o,r=null;if(e.timeout){const o=e.timeout;r=setTimeout((()=>{t.abort(),this._logger.log(At.Warning,"Timeout from HTTP request."),n=new Vt}),o)}""===e.content&&(e.content=void 0),e.content&&(e.headers=e.headers||{},Bt(e.content)?e.headers["Content-Type"]="application/octet-stream":e.headers["Content-Type"]="text/plain;charset=UTF-8");try{o=await this._fetchType(e.url,{body:e.content,cache:"no-cache",credentials:!0===e.withCredentials?"include":"same-origin",headers:{"X-Requested-With":"XMLHttpRequest",...e.headers},method:e.method,mode:"cors",redirect:"follow",signal:t.signal})}catch(e){if(n)throw n;throw this._logger.log(At.Warning,`Error from HTTP request. ${e}.`),e}finally{r&&clearTimeout(r),e.abortSignal&&(e.abortSignal.onabort=null)}if(!o.ok){const e=await gn(o,"text");throw new Kt(e||o.statusText,o.status)}const s=gn(o,e.responseType),i=await s;return new dn(o.status,o.statusText,i)}getCookieString(e){return""}}function gn(e,t){let n;switch(t){case"arraybuffer":n=e.arrayBuffer();break;case"text":default:n=e.text();break;case"blob":case"document":case"json":throw new Error(`${t} is not supported.`)}return n}class mn extends un{constructor(e){super(),this._logger=e}send(e){return e.abortSignal&&e.abortSignal.aborted?Promise.reject(new Xt):e.method?e.url?new Promise(((t,n)=>{const o=new XMLHttpRequest;o.open(e.method,e.url,!0),o.withCredentials=void 0===e.withCredentials||e.withCredentials,o.setRequestHeader("X-Requested-With","XMLHttpRequest"),""===e.content&&(e.content=void 0),e.content&&(Bt(e.content)?o.setRequestHeader("Content-Type","application/octet-stream"):o.setRequestHeader("Content-Type","text/plain;charset=UTF-8"));const r=e.headers;r&&Object.keys(r).forEach((e=>{o.setRequestHeader(e,r[e])})),e.responseType&&(o.responseType=e.responseType),e.abortSignal&&(e.abortSignal.onabort=()=>{o.abort(),n(new Xt)}),e.timeout&&(o.timeout=e.timeout),o.onload=()=>{e.abortSignal&&(e.abortSignal.onabort=null),o.status>=200&&o.status<300?t(new dn(o.status,o.statusText,o.response||o.responseText)):n(new Kt(o.response||o.responseText||o.statusText,o.status))},o.onerror=()=>{this._logger.log(At.Warning,`Error from HTTP request. ${o.status}: ${o.statusText}.`),n(new Kt(o.statusText,o.status))},o.ontimeout=()=>{this._logger.log(At.Warning,"Timeout from HTTP request."),n(new Vt)},o.send(e.content)})):Promise.reject(new Error("No url defined.")):Promise.reject(new Error("No method defined."))}}class yn extends un{constructor(e){if(super(),"undefined"!=typeof fetch)this._httpClient=new fn(e);else{if("undefined"==typeof XMLHttpRequest)throw new Error("No usable HttpClient found.");this._httpClient=new mn(e)}}send(e){return e.abortSignal&&e.abortSignal.aborted?Promise.reject(new Xt):e.method?e.url?this._httpClient.send(e):Promise.reject(new Error("No url defined.")):Promise.reject(new Error("No method defined."))}getCookieString(e){return this._httpClient.getCookieString(e)}}var vn,wn;!function(e){e[e.None=0]="None",e[e.WebSockets=1]="WebSockets",e[e.ServerSentEvents=2]="ServerSentEvents",e[e.LongPolling=4]="LongPolling"}(vn||(vn={})),function(e){e[e.Text=1]="Text",e[e.Binary=2]="Binary"}(wn||(wn={}));class bn{constructor(){this._isAborted=!1,this.onabort=null}abort(){this._isAborted||(this._isAborted=!0,this.onabort&&this.onabort())}get signal(){return this}get aborted(){return this._isAborted}}class _n{get pollAborted(){return this._pollAbort.aborted}constructor(e,t,n){this._httpClient=e,this._logger=t,this._pollAbort=new bn,this._options=n,this._running=!1,this.onreceive=null,this.onclose=null}async connect(e,t){if(Mt.isRequired(e,"url"),Mt.isRequired(t,"transferFormat"),Mt.isIn(t,wn,"transferFormat"),this._url=e,this._logger.log(At.Trace,"(LongPolling transport) Connecting."),t===wn.Binary&&"undefined"!=typeof XMLHttpRequest&&"string"!=typeof(new XMLHttpRequest).responseType)throw new Error("Binary protocols over XmlHttpRequest not implementing advanced features are not supported.");const[n,o]=Ht(),r={[n]:o,...this._options.headers},s={abortSignal:this._pollAbort.signal,headers:r,timeout:1e5,withCredentials:this._options.withCredentials};t===wn.Binary&&(s.responseType="arraybuffer");const i=`${e}&_=${Date.now()}`;this._logger.log(At.Trace,`(LongPolling transport) polling: ${i}.`);const a=await this._httpClient.get(i,s);200!==a.statusCode?(this._logger.log(At.Error,`(LongPolling transport) Unexpected response code: ${a.statusCode}.`),this._closeError=new Kt(a.statusText||"",a.statusCode),this._running=!1):this._running=!0,this._receiving=this._poll(this._url,s)}async _poll(e,t){try{for(;this._running;)try{const n=`${e}&_=${Date.now()}`;this._logger.log(At.Trace,`(LongPolling transport) polling: ${n}.`);const o=await this._httpClient.get(n,t);204===o.statusCode?(this._logger.log(At.Information,"(LongPolling transport) Poll terminated by server."),this._running=!1):200!==o.statusCode?(this._logger.log(At.Error,`(LongPolling transport) Unexpected response code: ${o.statusCode}.`),this._closeError=new Kt(o.statusText||"",o.statusCode),this._running=!1):o.content?(this._logger.log(At.Trace,`(LongPolling transport) data received. ${Lt(o.content,this._options.logMessageContent)}.`),this.onreceive&&this.onreceive(o.content)):this._logger.log(At.Trace,"(LongPolling transport) Poll timed out, reissuing.")}catch(e){this._running?e instanceof Vt?this._logger.log(At.Trace,"(LongPolling transport) Poll timed out, reissuing."):(this._closeError=e,this._running=!1):this._logger.log(At.Trace,`(LongPolling transport) Poll errored after shutdown: ${e.message}`)}}finally{this._logger.log(At.Trace,"(LongPolling transport) Polling complete."),this.pollAborted||this._raiseOnClose()}}async send(e){return this._running?Ft(this._logger,"LongPolling",this._httpClient,this._url,e,this._options):Promise.reject(new Error("Cannot send until the transport is connected"))}async stop(){this._logger.log(At.Trace,"(LongPolling transport) Stopping polling."),this._running=!1,this._pollAbort.abort();try{await this._receiving,this._logger.log(At.Trace,`(LongPolling transport) sending DELETE request to ${this._url}.`);const e={},[t,n]=Ht();e[t]=n;const o={headers:{...e,...this._options.headers},timeout:this._options.timeout,withCredentials:this._options.withCredentials};let r;try{await this._httpClient.delete(this._url,o)}catch(e){r=e}r?r instanceof Kt&&(404===r.statusCode?this._logger.log(At.Trace,"(LongPolling transport) A 404 response was returned from sending a DELETE request."):this._logger.log(At.Trace,`(LongPolling transport) Error sending a DELETE request: ${r}`)):this._logger.log(At.Trace,"(LongPolling transport) DELETE request accepted.")}finally{this._logger.log(At.Trace,"(LongPolling transport) Stop finished."),this._raiseOnClose()}}_raiseOnClose(){if(this.onclose){let e="(LongPolling transport) Firing onclose event.";this._closeError&&(e+=" Error: "+this._closeError),this._logger.log(At.Trace,e),this.onclose(this._closeError)}}}class Sn{constructor(e,t,n,o){this._httpClient=e,this._accessToken=t,this._logger=n,this._options=o,this.onreceive=null,this.onclose=null}async connect(e,t){return Mt.isRequired(e,"url"),Mt.isRequired(t,"transferFormat"),Mt.isIn(t,wn,"transferFormat"),this._logger.log(At.Trace,"(SSE transport) Connecting."),this._url=e,this._accessToken&&(e+=(e.indexOf("?")<0?"?":"&")+`access_token=${encodeURIComponent(this._accessToken)}`),new Promise(((n,o)=>{let r,s=!1;if(t===wn.Text){if(Ut.isBrowser||Ut.isWebWorker)r=new this._options.EventSource(e,{withCredentials:this._options.withCredentials});else{const t=this._httpClient.getCookieString(e),n={};n.Cookie=t;const[o,s]=Ht();n[o]=s,r=new this._options.EventSource(e,{withCredentials:this._options.withCredentials,headers:{...n,...this._options.headers}})}try{r.onmessage=e=>{if(this.onreceive)try{this._logger.log(At.Trace,`(SSE transport) data received. ${Lt(e.data,this._options.logMessageContent)}.`),this.onreceive(e.data)}catch(e){return void this._close(e)}},r.onerror=e=>{s?this._close():o(new Error("EventSource failed to connect. The connection could not be found on the server, either the connection ID is not present on the server, or a proxy is refusing/buffering the connection. If you have multiple servers check that sticky sessions are enabled."))},r.onopen=()=>{this._logger.log(At.Information,`SSE connected to ${this._url}`),this._eventSource=r,s=!0,n()}}catch(e){return void o(e)}}else o(new Error("The Server-Sent Events transport only supports the 'Text' transfer format"))}))}async send(e){return this._eventSource?Ft(this._logger,"SSE",this._httpClient,this._url,e,this._options):Promise.reject(new Error("Cannot send until the transport is connected"))}stop(){return this._close(),Promise.resolve()}_close(e){this._eventSource&&(this._eventSource.close(),this._eventSource=void 0,this.onclose&&this.onclose(e))}}class En{constructor(e,t,n,o,r,s){this._logger=n,this._accessTokenFactory=t,this._logMessageContent=o,this._webSocketConstructor=r,this._httpClient=e,this.onreceive=null,this.onclose=null,this._headers=s}async connect(e,t){let n;return Mt.isRequired(e,"url"),Mt.isRequired(t,"transferFormat"),Mt.isIn(t,wn,"transferFormat"),this._logger.log(At.Trace,"(WebSockets transport) Connecting."),this._accessTokenFactory&&(n=await this._accessTokenFactory()),new Promise(((o,r)=>{let s;e=e.replace(/^http/,"ws");const i=this._httpClient.getCookieString(e);let a=!1;if(Ut.isReactNative){const t={},[o,r]=Ht();t[o]=r,n&&(t[hn.Authorization]=`Bearer ${n}`),i&&(t[hn.Cookie]=i),s=new this._webSocketConstructor(e,void 0,{headers:{...t,...this._headers}})}else n&&(e+=(e.indexOf("?")<0?"?":"&")+`access_token=${encodeURIComponent(n)}`);s||(s=new this._webSocketConstructor(e)),t===wn.Binary&&(s.binaryType="arraybuffer"),s.onopen=t=>{this._logger.log(At.Information,`WebSocket connected to ${e}.`),this._webSocket=s,a=!0,o()},s.onerror=e=>{let t=null;t="undefined"!=typeof ErrorEvent&&e instanceof ErrorEvent?e.error:"There was an error with the transport",this._logger.log(At.Information,`(WebSockets transport) ${t}.`)},s.onmessage=e=>{if(this._logger.log(At.Trace,`(WebSockets transport) data received. ${Lt(e.data,this._logMessageContent)}.`),this.onreceive)try{this.onreceive(e.data)}catch(e){return void this._close(e)}},s.onclose=e=>{if(a)this._close(e);else{let t=null;t="undefined"!=typeof ErrorEvent&&e instanceof ErrorEvent?e.error:"WebSocket failed to connect. The connection could not be found on the server, either the endpoint may not be a SignalR endpoint, the connection ID is not present on the server, or there is a proxy blocking WebSockets. If you have multiple servers check that sticky sessions are enabled.",r(new Error(t))}}}))}send(e){return this._webSocket&&this._webSocket.readyState===this._webSocketConstructor.OPEN?(this._logger.log(At.Trace,`(WebSockets transport) sending data. ${Lt(e,this._logMessageContent)}.`),this._webSocket.send(e),Promise.resolve()):Promise.reject("WebSocket is not in the OPEN state")}stop(){return this._webSocket&&this._close(void 0),Promise.resolve()}_close(e){this._webSocket&&(this._webSocket.onclose=()=>{},this._webSocket.onmessage=()=>{},this._webSocket.onerror=()=>{},this._webSocket.close(),this._webSocket=void 0),this._logger.log(At.Trace,"(WebSockets transport) socket closed."),this.onclose&&(!this._isCloseEvent(e)||!1!==e.wasClean&&1e3===e.code?e instanceof Error?this.onclose(e):this.onclose():this.onclose(new Error(`WebSocket closed with status code: ${e.code} (${e.reason||"no reason given"}).`)))}_isCloseEvent(e){return e&&"boolean"==typeof e.wasClean&&"number"==typeof e.code}}class Cn{constructor(e,t={}){if(this._stopPromiseResolver=()=>{},this.features={},this._negotiateVersion=1,Mt.isRequired(e,"url"),this._logger=function(e){return void 0===e?new $t(At.Information):null===e?Nt.instance:void 0!==e.log?e:new $t(e)}(t.logger),this.baseUrl=this._resolveUrl(e),(t=t||{}).logMessageContent=void 0!==t.logMessageContent&&t.logMessageContent,"boolean"!=typeof t.withCredentials&&void 0!==t.withCredentials)throw new Error("withCredentials option was not a 'boolean' or 'undefined' value");t.withCredentials=void 0===t.withCredentials||t.withCredentials,t.timeout=void 0===t.timeout?1e5:t.timeout,"undefined"==typeof WebSocket||t.WebSocket||(t.WebSocket=WebSocket),"undefined"==typeof EventSource||t.EventSource||(t.EventSource=EventSource),this._httpClient=new pn(t.httpClient||new yn(this._logger),t.accessTokenFactory),this._connectionState="Disconnected",this._connectionStarted=!1,this._options=t,this.onreceive=null,this.onclose=null}async start(e){if(e=e||wn.Binary,Mt.isIn(e,wn,"transferFormat"),this._logger.log(At.Debug,`Starting connection with transfer format '${wn[e]}'.`),"Disconnected"!==this._connectionState)return Promise.reject(new Error("Cannot start an HttpConnection that is not in the 'Disconnected' state."));if(this._connectionState="Connecting",this._startInternalPromise=this._startInternal(e),await this._startInternalPromise,"Disconnecting"===this._connectionState){const e="Failed to start the HttpConnection before stop() was called.";return this._logger.log(At.Error,e),await this._stopPromise,Promise.reject(new Xt(e))}if("Connected"!==this._connectionState){const e="HttpConnection.startInternal completed gracefully but didn't enter the connection into the connected state!";return this._logger.log(At.Error,e),Promise.reject(new Xt(e))}this._connectionStarted=!0}send(e){return"Connected"!==this._connectionState?Promise.reject(new Error("Cannot send data if the connection is not in the 'Connected' State.")):(this._sendQueue||(this._sendQueue=new In(this.transport)),this._sendQueue.send(e))}async stop(e){return"Disconnected"===this._connectionState?(this._logger.log(At.Debug,`Call to HttpConnection.stop(${e}) ignored because the connection is already in the disconnected state.`),Promise.resolve()):"Disconnecting"===this._connectionState?(this._logger.log(At.Debug,`Call to HttpConnection.stop(${e}) ignored because the connection is already in the disconnecting state.`),this._stopPromise):(this._connectionState="Disconnecting",this._stopPromise=new Promise((e=>{this._stopPromiseResolver=e})),await this._stopInternal(e),void await this._stopPromise)}async _stopInternal(e){this._stopError=e;try{await this._startInternalPromise}catch(e){}if(this.transport){try{await this.transport.stop()}catch(e){this._logger.log(At.Error,`HttpConnection.transport.stop() threw error '${e}'.`),this._stopConnection()}this.transport=void 0}else this._logger.log(At.Debug,"HttpConnection.transport is undefined in HttpConnection.stop() because start() failed.")}async _startInternal(e){let t=this.baseUrl;this._accessTokenFactory=this._options.accessTokenFactory,this._httpClient._accessTokenFactory=this._accessTokenFactory;try{if(this._options.skipNegotiation){if(this._options.transport!==vn.WebSockets)throw new Error("Negotiation can only be skipped when using the WebSocket transport directly.");this.transport=this._constructTransport(vn.WebSockets),await this._startTransport(t,e)}else{let n=null,o=0;do{if(n=await this._getNegotiationResponse(t),"Disconnecting"===this._connectionState||"Disconnected"===this._connectionState)throw new Xt("The connection was stopped during negotiation.");if(n.error)throw new Error(n.error);if(n.ProtocolVersion)throw new Error("Detected a connection attempt to an ASP.NET SignalR Server. This client only supports connecting to an ASP.NET Core SignalR Server. See https://aka.ms/signalr-core-differences for details.");if(n.url&&(t=n.url),n.accessToken){const e=n.accessToken;this._accessTokenFactory=()=>e,this._httpClient._accessToken=e,this._httpClient._accessTokenFactory=void 0}o++}while(n.url&&o<100);if(100===o&&n.url)throw new Error("Negotiate redirection limit exceeded.");await this._createTransport(t,this._options.transport,n,e)}this.transport instanceof _n&&(this.features.inherentKeepAlive=!0),"Connecting"===this._connectionState&&(this._logger.log(At.Debug,"The HttpConnection connected successfully."),this._connectionState="Connected")}catch(e){return this._logger.log(At.Error,"Failed to start the connection: "+e),this._connectionState="Disconnected",this.transport=void 0,this._stopPromiseResolver(),Promise.reject(e)}}async _getNegotiationResponse(e){const t={},[n,o]=Ht();t[n]=o;const r=this._resolveNegotiateUrl(e);this._logger.log(At.Debug,`Sending negotiation request: ${r}.`);try{const e=await this._httpClient.post(r,{content:"",headers:{...t,...this._options.headers},timeout:this._options.timeout,withCredentials:this._options.withCredentials});if(200!==e.statusCode)return Promise.reject(new Error(`Unexpected status code returned from negotiate '${e.statusCode}'`));const n=JSON.parse(e.content);return(!n.negotiateVersion||n.negotiateVersion<1)&&(n.connectionToken=n.connectionId),n.useAck&&!0!==this._options._useStatefulReconnect?Promise.reject(new Zt("Client didn't negotiate Stateful Reconnect but the server did.")):n}catch(e){let t="Failed to complete negotiation with the server: "+e;return e instanceof Kt&&404===e.statusCode&&(t+=" Either this is not a SignalR endpoint or there is a proxy blocking the connection."),this._logger.log(At.Error,t),Promise.reject(new Zt(t))}}_createConnectUrl(e,t){return t?e+(-1===e.indexOf("?")?"?":"&")+`id=${t}`:e}async _createTransport(e,t,n,o){let r=this._createConnectUrl(e,n.connectionToken);if(this._isITransport(t))return this._logger.log(At.Debug,"Connection was provided an instance of ITransport, using that directly."),this.transport=t,await this._startTransport(r,o),void(this.connectionId=n.connectionId);const s=[],i=n.availableTransports||[];let a=n;for(const n of i){const i=this._resolveTransportOrError(n,t,o,!0===(null==a?void 0:a.useAck));if(i instanceof Error)s.push(`${n.transport} failed:`),s.push(i);else if(this._isITransport(i)){if(this.transport=i,!a){try{a=await this._getNegotiationResponse(e)}catch(e){return Promise.reject(e)}r=this._createConnectUrl(e,a.connectionToken)}try{return await this._startTransport(r,o),void(this.connectionId=a.connectionId)}catch(e){if(this._logger.log(At.Error,`Failed to start the transport '${n.transport}': ${e}`),a=void 0,s.push(new Qt(`${n.transport} failed: ${e}`,vn[n.transport])),"Connecting"!==this._connectionState){const e="Failed to select transport before stop() was called.";return this._logger.log(At.Debug,e),Promise.reject(new Xt(e))}}}}return s.length>0?Promise.reject(new en(`Unable to connect to the server with any of the available transports. ${s.join(" ")}`,s)):Promise.reject(new Error("None of the transports supported by the client are supported by the server."))}_constructTransport(e){switch(e){case vn.WebSockets:if(!this._options.WebSocket)throw new Error("'WebSocket' is not supported in your environment.");return new En(this._httpClient,this._accessTokenFactory,this._logger,this._options.logMessageContent,this._options.WebSocket,this._options.headers||{});case vn.ServerSentEvents:if(!this._options.EventSource)throw new Error("'EventSource' is not supported in your environment.");return new Sn(this._httpClient,this._httpClient._accessToken,this._logger,this._options);case vn.LongPolling:return new _n(this._httpClient,this._logger,this._options);default:throw new Error(`Unknown transport: ${e}.`)}}_startTransport(e,t){return this.transport.onreceive=this.onreceive,this.features.reconnect?this.transport.onclose=async n=>{let o=!1;if(this.features.resend){try{this.features.disconnected(),await this.transport.connect(e,t),await this.features.resend()}catch{o=!0}o&&this._stopConnection(n)}else this._stopConnection(n)}:this.transport.onclose=e=>this._stopConnection(e),this.transport.connect(e,t)}_resolveTransportOrError(e,t,n,o){const r=vn[e.transport];if(null==r)return this._logger.log(At.Debug,`Skipping transport '${e.transport}' because it is not supported by this client.`),new Error(`Skipping transport '${e.transport}' because it is not supported by this client.`);if(!function(e,t){return!e||0!=(t&e)}(t,r))return this._logger.log(At.Debug,`Skipping transport '${vn[r]}' because it was disabled by the client.`),new Yt(`'${vn[r]}' is disabled by the client.`,r);if(!(e.transferFormats.map((e=>wn[e])).indexOf(n)>=0))return this._logger.log(At.Debug,`Skipping transport '${vn[r]}' because it does not support the requested transfer format '${wn[n]}'.`),new Error(`'${vn[r]}' does not support ${wn[n]}.`);if(r===vn.WebSockets&&!this._options.WebSocket||r===vn.ServerSentEvents&&!this._options.EventSource)return this._logger.log(At.Debug,`Skipping transport '${vn[r]}' because it is not supported in your environment.'`),new Gt(`'${vn[r]}' is not supported in your environment.`,r);this._logger.log(At.Debug,`Selecting transport '${vn[r]}'.`);try{return this.features.reconnect=r===vn.WebSockets?o:void 0,this._constructTransport(r)}catch(e){return e}}_isITransport(e){return e&&"object"==typeof e&&"connect"in e}_stopConnection(e){if(this._logger.log(At.Debug,`HttpConnection.stopConnection(${e}) called while in state ${this._connectionState}.`),this.transport=void 0,e=this._stopError||e,this._stopError=void 0,"Disconnected"!==this._connectionState){if("Connecting"===this._connectionState)throw this._logger.log(At.Warning,`Call to HttpConnection.stopConnection(${e}) was ignored because the connection is still in the connecting state.`),new Error(`HttpConnection.stopConnection(${e}) was called while the connection is still in the connecting state.`);if("Disconnecting"===this._connectionState&&this._stopPromiseResolver(),e?this._logger.log(At.Error,`Connection disconnected with error '${e}'.`):this._logger.log(At.Information,"Connection disconnected."),this._sendQueue&&(this._sendQueue.stop().catch((e=>{this._logger.log(At.Error,`TransportSendQueue.stop() threw error '${e}'.`)})),this._sendQueue=void 0),this.connectionId=void 0,this._connectionState="Disconnected",this._connectionStarted){this._connectionStarted=!1;try{this.onclose&&this.onclose(e)}catch(t){this._logger.log(At.Error,`HttpConnection.onclose(${e}) threw error '${t}'.`)}}}else this._logger.log(At.Debug,`Call to HttpConnection.stopConnection(${e}) was ignored because the connection is already in the disconnected state.`)}_resolveUrl(e){if(0===e.lastIndexOf("https://",0)||0===e.lastIndexOf("http://",0))return e;if(!Ut.isBrowser)throw new Error(`Cannot resolve '${e}'.`);const t=window.document.createElement("a");return t.href=e,this._logger.log(At.Information,`Normalizing '${e}' to '${t.href}'.`),t.href}_resolveNegotiateUrl(e){const t=new URL(e);t.pathname.endsWith("/")?t.pathname+="negotiate":t.pathname+="/negotiate";const n=new URLSearchParams(t.searchParams);return n.has("negotiateVersion")||n.append("negotiateVersion",this._negotiateVersion.toString()),n.has("useAck")?"true"===n.get("useAck")&&(this._options._useStatefulReconnect=!0):!0===this._options._useStatefulReconnect&&n.append("useAck","true"),t.search=n.toString(),t.toString()}}class In{constructor(e){this._transport=e,this._buffer=[],this._executing=!0,this._sendBufferedData=new kn,this._transportResult=new kn,this._sendLoopPromise=this._sendLoop()}send(e){return this._bufferData(e),this._transportResult||(this._transportResult=new kn),this._transportResult.promise}stop(){return this._executing=!1,this._sendBufferedData.resolve(),this._sendLoopPromise}_bufferData(e){if(this._buffer.length&&typeof this._buffer[0]!=typeof e)throw new Error(`Expected data to be of type ${typeof this._buffer} but was of type ${typeof e}`);this._buffer.push(e),this._sendBufferedData.resolve()}async _sendLoop(){for(;;){if(await this._sendBufferedData.promise,!this._executing){this._transportResult&&this._transportResult.reject("Connection stopped.");break}this._sendBufferedData=new kn;const e=this._transportResult;this._transportResult=void 0;const t="string"==typeof this._buffer[0]?this._buffer.join(""):In._concatBuffers(this._buffer);this._buffer.length=0;try{await this._transport.send(t),e.resolve()}catch(t){e.reject(t)}}}static _concatBuffers(e){const t=e.map((e=>e.byteLength)).reduce(((e,t)=>e+t)),n=new Uint8Array(t);let o=0;for(const t of e)n.set(new Uint8Array(t),o),o+=t.byteLength;return n.buffer}}class kn{constructor(){this.promise=new Promise(((e,t)=>[this._resolver,this._rejecter]=[e,t]))}resolve(){this._resolver()}reject(e){this._rejecter(e)}}class Tn{constructor(){this.name="json",this.version=1,this.transferFormat=wn.Text}parseMessages(e,t){if("string"!=typeof e)throw new Error("Invalid input for JSON hub protocol. Expected a string.");if(!e)return[];null===t&&(t=Nt.instance);const n=xt.parse(e),o=[];for(const e of n){const n=JSON.parse(e);if("number"!=typeof n.type)throw new Error("Invalid payload.");switch(n.type){case tn.Invocation:this._isInvocationMessage(n);break;case tn.StreamItem:this._isStreamItemMessage(n);break;case tn.Completion:this._isCompletionMessage(n);break;case tn.Ping:case tn.Close:break;case tn.Ack:this._isAckMessage(n);break;case tn.Sequence:this._isSequenceMessage(n);break;default:t.log(At.Information,"Unknown message type '"+n.type+"' ignored.");continue}o.push(n)}return o}writeMessage(e){return xt.write(JSON.stringify(e))}_isInvocationMessage(e){this._assertNotEmptyString(e.target,"Invalid payload for Invocation message."),void 0!==e.invocationId&&this._assertNotEmptyString(e.invocationId,"Invalid payload for Invocation message.")}_isStreamItemMessage(e){if(this._assertNotEmptyString(e.invocationId,"Invalid payload for StreamItem message."),void 0===e.item)throw new Error("Invalid payload for StreamItem message.")}_isCompletionMessage(e){if(e.result&&e.error)throw new Error("Invalid payload for Completion message.");!e.result&&e.error&&this._assertNotEmptyString(e.error,"Invalid payload for Completion message."),this._assertNotEmptyString(e.invocationId,"Invalid payload for Completion message.")}_isAckMessage(e){if("number"!=typeof e.sequenceId)throw new Error("Invalid SequenceId for Ack message.")}_isSequenceMessage(e){if("number"!=typeof e.sequenceId)throw new Error("Invalid SequenceId for Sequence message.")}_assertNotEmptyString(e,t){if("string"!=typeof e||""===e)throw new Error(t)}}const Dn={trace:At.Trace,debug:At.Debug,info:At.Information,information:At.Information,warn:At.Warning,warning:At.Warning,error:At.Error,critical:At.Critical,none:At.None};class Rn{configureLogging(e){if(Mt.isRequired(e,"logging"),function(e){return void 0!==e.log}(e))this.logger=e;else if("string"==typeof e){const t=function(e){const t=Dn[e.toLowerCase()];if(void 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t=e.length;this.ensureBufferSizeToWrite(t),this.bytes.set(e,this.pos),this.pos+=t},e.prototype.writeI8=function(e){this.ensureBufferSizeToWrite(1),this.view.setInt8(this.pos,e),this.pos++},e.prototype.writeU16=function(e){this.ensureBufferSizeToWrite(2),this.view.setUint16(this.pos,e),this.pos+=2},e.prototype.writeI16=function(e){this.ensureBufferSizeToWrite(2),this.view.setInt16(this.pos,e),this.pos+=2},e.prototype.writeU32=function(e){this.ensureBufferSizeToWrite(4),this.view.setUint32(this.pos,e),this.pos+=4},e.prototype.writeI32=function(e){this.ensureBufferSizeToWrite(4),this.view.setInt32(this.pos,e),this.pos+=4},e.prototype.writeF32=function(e){this.ensureBufferSizeToWrite(4),this.view.setFloat32(this.pos,e),this.pos+=4},e.prototype.writeF64=function(e){this.ensureBufferSizeToWrite(8),this.view.setFloat64(this.pos,e),this.pos+=8},e.prototype.writeU64=function(e){this.ensureBufferSizeToWrite(8),function(e,t,n){var o=n/4294967296,r=n;e.setUint32(t,o),e.setUint32(t+4,r)}(this.view,this.pos,e),this.pos+=8},e.prototype.writeI64=function(e){this.ensureBufferSizeToWrite(8),Un(this.view,this.pos,e),this.pos+=8},e}();function Zn(e){return"".concat(e<0?"-":"","0x").concat(Math.abs(e).toString(16).padStart(2,"0"))}var eo=function(){function e(e,t){void 0===e&&(e=16),void 0===t&&(t=16),this.maxKeyLength=e,this.maxLengthPerKey=t,this.hit=0,this.miss=0,this.caches=[];for(var n=0;n<this.maxKeyLength;n++)this.caches.push([])}return e.prototype.canBeCached=function(e){return e>0&&e<=this.maxKeyLength},e.prototype.find=function(e,t,n){e:for(var o=0,r=this.caches[n-1];o<r.length;o++){for(var s=r[o],i=s.bytes,a=0;a<n;a++)if(i[a]!==e[t+a])continue e;return s.str}return null},e.prototype.store=function(e,t){var n=this.caches[e.length-1],o={bytes:e,str:t};n.length>=this.maxLengthPerKey?n[Math.random()*n.length|0]=o:n.push(o)},e.prototype.decode=function(e,t,n){var o=this.find(e,t,n);if(null!=o)return 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3:return[2]}}))},e.prototype.decodeAsync=function(e){var t,n,o,r,s,i,a;return s=this,void 0,a=function(){var s,i,a,c,l,h,d,u;return to(this,(function(p){switch(p.label){case 0:s=!1,p.label=1;case 1:p.trys.push([1,6,7,12]),t=no(e),p.label=2;case 2:return[4,t.next()];case 3:if((n=p.sent()).done)return[3,5];if(a=n.value,s)throw this.createExtraByteError(this.totalPos);this.appendBuffer(a);try{i=this.doDecodeSync(),s=!0}catch(e){if(!(e instanceof io))throw e}this.totalPos+=this.pos,p.label=4;case 4:return[3,2];case 5:return[3,12];case 6:return c=p.sent(),o={error:c},[3,12];case 7:return p.trys.push([7,,10,11]),n&&!n.done&&(r=t.return)?[4,r.call(t)]:[3,9];case 8:p.sent(),p.label=9;case 9:return[3,11];case 10:if(o)throw o.error;return[7];case 11:return[7];case 12:if(s){if(this.hasRemaining(1))throw this.createExtraByteError(this.totalPos);return[2,i]}throw h=(l=this).headByte,d=l.pos,u=l.totalPos,new RangeError("Insufficient data in parsing ".concat(Zn(h)," at ").concat(u," (").concat(d," in 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u(e,t){e(t),a.shift(),a.length&&l(a[0][0],a[0][1])}}(this,arguments)},e.prototype.doDecodeSync=function(){e:for(;;){var e=this.readHeadByte(),t=void 0;if(e>=224)t=e-256;else if(e<192)if(e<128)t=e;else if(e<144){if(0!=(o=e-128)){this.pushMapState(o),this.complete();continue e}t={}}else if(e<160){if(0!=(o=e-144)){this.pushArrayState(o),this.complete();continue e}t=[]}else{var n=e-160;t=this.decodeUtf8String(n,0)}else if(192===e)t=null;else if(194===e)t=!1;else if(195===e)t=!0;else if(202===e)t=this.readF32();else if(203===e)t=this.readF64();else if(204===e)t=this.readU8();else if(205===e)t=this.readU16();else if(206===e)t=this.readU32();else if(207===e)t=this.readU64();else if(208===e)t=this.readI8();else if(209===e)t=this.readI16();else if(210===e)t=this.readI32();else if(211===e)t=this.readI64();else if(217===e)n=this.lookU8(),t=this.decodeUtf8String(n,1);else if(218===e)n=this.lookU16(),t=this.decodeUtf8String(n,2);else if(219===e)n=this.lookU32(),t=this.decodeUtf8String(n,4);else if(220===e){if(0!==(o=this.readU16())){this.pushArrayState(o),this.complete();continue e}t=[]}else if(221===e){if(0!==(o=this.readU32())){this.pushArrayState(o),this.complete();continue e}t=[]}else if(222===e){if(0!==(o=this.readU16())){this.pushMapState(o),this.complete();continue e}t={}}else if(223===e){if(0!==(o=this.readU32())){this.pushMapState(o),this.complete();continue e}t={}}else if(196===e){var o=this.lookU8();t=this.decodeBinary(o,1)}else if(197===e)o=this.lookU16(),t=this.decodeBinary(o,2);else if(198===e)o=this.lookU32(),t=this.decodeBinary(o,4);else if(212===e)t=this.decodeExtension(1,0);else if(213===e)t=this.decodeExtension(2,0);else if(214===e)t=this.decodeExtension(4,0);else if(215===e)t=this.decodeExtension(8,0);else if(216===e)t=this.decodeExtension(16,0);else if(199===e)o=this.lookU8(),t=this.decodeExtension(o,1);else if(200===e)o=this.lookU16(),t=this.decodeExtension(o,2);else{if(201!==e)throw new Vn("Unrecognized type byte: ".concat(Zn(e)));o=this.lookU32(),t=this.decodeExtension(o,4)}this.complete();for(var r=this.stack;r.length>0;){var s=r[r.length-1];if(0===s.type){if(s.array[s.position]=t,s.position++,s.position!==s.size)continue e;r.pop(),t=s.array}else{if(1===s.type){if("string"!=(i=typeof t)&&"number"!==i)throw new Vn("The type of key must be string or number but "+typeof t);if("__proto__"===t)throw new Vn("The key __proto__ is not allowed");s.key=t,s.type=2;continue e}if(s.map[s.key]=t,s.readCount++,s.readCount!==s.size){s.key=null,s.type=1;continue e}r.pop(),t=s.map}}return t}var i},e.prototype.readHeadByte=function(){return-1===this.headByte&&(this.headByte=this.readU8()),this.headByte},e.prototype.complete=function(){this.headByte=-1},e.prototype.readArraySize=function(){var e=this.readHeadByte();switch(e){case 220:return this.readU16();case 221:return this.readU32();default:if(e<160)return e-144;throw new Vn("Unrecognized array type byte: ".concat(Zn(e)))}},e.prototype.pushMapState=function(e){if(e>this.maxMapLength)throw new Vn("Max length exceeded: map length (".concat(e,") > maxMapLengthLength (").concat(this.maxMapLength,")"));this.stack.push({type:1,size:e,key:null,readCount:0,map:{}})},e.prototype.pushArrayState=function(e){if(e>this.maxArrayLength)throw new Vn("Max length exceeded: array length (".concat(e,") > maxArrayLength (").concat(this.maxArrayLength,")"));this.stack.push({type:0,size:e,array:new Array(e),position:0})},e.prototype.decodeUtf8String=function(e,t){var n;if(e>this.maxStrLength)throw new Vn("Max length exceeded: UTF-8 byte length (".concat(e,") > maxStrLength (").concat(this.maxStrLength,")"));if(this.bytes.byteLength<this.pos+t+e)throw ao;var o,r=this.pos+t;return o=this.stateIsMapKey()&&(null===(n=this.keyDecoder)||void 0===n?void 0:n.canBeCached(e))?this.keyDecoder.decode(this.bytes,r,e):e>zn?function(e,t,n){var o=e.subarray(t,t+n);return qn.decode(o)}(this.bytes,r,e):jn(this.bytes,r,e),this.pos+=t+e,o},e.prototype.stateIsMapKey=function(){return this.stack.length>0&&1===this.stack[this.stack.length-1].type},e.prototype.decodeBinary=function(e,t){if(e>this.maxBinLength)throw new Vn("Max length exceeded: bin length (".concat(e,") > maxBinLength (").concat(this.maxBinLength,")"));if(!this.hasRemaining(e+t))throw ao;var n=this.pos+t,o=this.bytes.subarray(n,n+e);return this.pos+=t+e,o},e.prototype.decodeExtension=function(e,t){if(e>this.maxExtLength)throw new Vn("Max length exceeded: ext length (".concat(e,") > maxExtLength (").concat(this.maxExtLength,")"));var n=this.view.getInt8(this.pos+t),o=this.decodeBinary(e,t+1);return this.extensionCodec.decode(o,n,this.context)},e.prototype.lookU8=function(){return this.view.getUint8(this.pos)},e.prototype.lookU16=function(){return this.view.getUint16(this.pos)},e.prototype.lookU32=function(){return this.view.getUint32(this.pos)},e.prototype.readU8=function(){var e=this.view.getUint8(this.pos);return this.pos++,e},e.prototype.readI8=function(){var e=this.view.getInt8(this.pos);return this.pos++,e},e.prototype.readU16=function(){var e=this.view.getUint16(this.pos);return this.pos+=2,e},e.prototype.readI16=function(){var e=this.view.getInt16(this.pos);return this.pos+=2,e},e.prototype.readU32=function(){var e=this.view.getUint32(this.pos);return this.pos+=4,e},e.prototype.readI32=function(){var e=this.view.getInt32(this.pos);return this.pos+=4,e},e.prototype.readU64=function(){var e,t,n=(e=this.view,t=this.pos,4294967296*e.getUint32(t)+e.getUint32(t+4));return this.pos+=8,n},e.prototype.readI64=function(){var e=Ln(this.view,this.pos);return this.pos+=8,e},e.prototype.readF32=function(){var e=this.view.getFloat32(this.pos);return this.pos+=4,e},e.prototype.readF64=function(){var e=this.view.getFloat64(this.pos);return this.pos+=8,e},e}();class ho{static write(e){let t=e.byteLength||e.length;const n=[];do{let e=127&t;t>>=7,t>0&&(e|=128),n.push(e)}while(t>0);t=e.byteLength||e.length;const o=new Uint8Array(n.length+t);return o.set(n,0),o.set(e,n.length),o.buffer}static parse(e){const t=[],n=new Uint8Array(e),o=[0,7,14,21,28];for(let r=0;r<e.byteLength;){let s,i=0,a=0;do{s=n[r+i],a|=(127&s)<<o[i],i++}while(i<Math.min(5,e.byteLength-r)&&0!=(128&s));if(0!=(128&s)&&i<5)throw new Error("Cannot read message size.");if(5===i&&s>7)throw new Error("Messages bigger than 2GB are not supported.");if(!(n.byteLength>=r+i+a))throw new Error("Incomplete message.");t.push(n.slice?n.slice(r+i,r+i+a):n.subarray(r+i,r+i+a)),r=r+i+a}return t}}const uo=new Uint8Array([145,tn.Ping]);class po{constructor(e){this.name="messagepack",this.version=1,this.transferFormat=wn.Binary,this._errorResult=1,this._voidResult=2,this._nonVoidResult=3,e=e||{},this._encoder=new Qn(e.extensionCodec,e.context,e.maxDepth,e.initialBufferSize,e.sortKeys,e.forceFloat32,e.ignoreUndefined,e.forceIntegerToFloat),this._decoder=new lo(e.extensionCodec,e.context,e.maxStrLength,e.maxBinLength,e.maxArrayLength,e.maxMapLength,e.maxExtLength)}parseMessages(e,t){if(!(n=e)||"undefined"==typeof ArrayBuffer||!(n instanceof ArrayBuffer||n.constructor&&"ArrayBuffer"===n.constructor.name))throw new Error("Invalid input for MessagePack hub protocol. Expected an ArrayBuffer.");var n;null===t&&(t=Nt.instance);const o=ho.parse(e),r=[];for(const e of o){const n=this._parseMessage(e,t);n&&r.push(n)}return r}writeMessage(e){switch(e.type){case tn.Invocation:return this._writeInvocation(e);case tn.StreamInvocation:return this._writeStreamInvocation(e);case tn.StreamItem:return this._writeStreamItem(e);case tn.Completion:return this._writeCompletion(e);case tn.Ping:return ho.write(uo);case tn.CancelInvocation:return this._writeCancelInvocation(e);case tn.Close:return this._writeClose();case tn.Ack:return this._writeAck(e);case tn.Sequence:return this._writeSequence(e);default:throw new Error("Invalid message type.")}}_parseMessage(e,t){if(0===e.length)throw new Error("Invalid payload.");const n=this._decoder.decode(e);if(0===n.length||!(n instanceof Array))throw new Error("Invalid payload.");const o=n[0];switch(o){case tn.Invocation:return this._createInvocationMessage(this._readHeaders(n),n);case tn.StreamItem:return this._createStreamItemMessage(this._readHeaders(n),n);case tn.Completion:return this._createCompletionMessage(this._readHeaders(n),n);case tn.Ping:return this._createPingMessage(n);case tn.Close:return this._createCloseMessage(n);case tn.Ack:return this._createAckMessage(n);case tn.Sequence:return this._createSequenceMessage(n);default:return t.log(At.Information,"Unknown message type '"+o+"' ignored."),null}}_createCloseMessage(e){if(e.length<2)throw new Error("Invalid payload for Close message.");return{allowReconnect:e.length>=3?e[2]:void 0,error:e[1],type:tn.Close}}_createPingMessage(e){if(e.length<1)throw new Error("Invalid payload for Ping message.");return{type:tn.Ping}}_createInvocationMessage(e,t){if(t.length<5)throw new Error("Invalid payload for Invocation message.");const n=t[2];return n?{arguments:t[4],headers:e,invocationId:n,streamIds:[],target:t[3],type:tn.Invocation}:{arguments:t[4],headers:e,streamIds:[],target:t[3],type:tn.Invocation}}_createStreamItemMessage(e,t){if(t.length<4)throw new Error("Invalid payload for StreamItem message.");return{headers:e,invocationId:t[2],item:t[3],type:tn.StreamItem}}_createCompletionMessage(e,t){if(t.length<4)throw new Error("Invalid payload for Completion message.");const n=t[3];if(n!==this._voidResult&&t.length<5)throw new Error("Invalid payload for Completion message.");let o,r;switch(n){case this._errorResult:o=t[4];break;case this._nonVoidResult:r=t[4]}return{error:o,headers:e,invocationId:t[2],result:r,type:tn.Completion}}_createAckMessage(e){if(e.length<1)throw new Error("Invalid payload for Ack message.");return{sequenceId:e[1],type:tn.Ack}}_createSequenceMessage(e){if(e.length<1)throw new Error("Invalid payload for Sequence message.");return{sequenceId:e[1],type:tn.Sequence}}_writeInvocation(e){let t;return t=e.streamIds?this._encoder.encode([tn.Invocation,e.headers||{},e.invocationId||null,e.target,e.arguments,e.streamIds]):this._encoder.encode([tn.Invocation,e.headers||{},e.invocationId||null,e.target,e.arguments]),ho.write(t.slice())}_writeStreamInvocation(e){let t;return t=e.streamIds?this._encoder.encode([tn.StreamInvocation,e.headers||{},e.invocationId,e.target,e.arguments,e.streamIds]):this._encoder.encode([tn.StreamInvocation,e.headers||{},e.invocationId,e.target,e.arguments]),ho.write(t.slice())}_writeStreamItem(e){const t=this._encoder.encode([tn.StreamItem,e.headers||{},e.invocationId,e.item]);return ho.write(t.slice())}_writeCompletion(e){const t=e.error?this._errorResult:void 0!==e.result?this._nonVoidResult:this._voidResult;let n;switch(t){case this._errorResult:n=this._encoder.encode([tn.Completion,e.headers||{},e.invocationId,t,e.error]);break;case this._voidResult:n=this._encoder.encode([tn.Completion,e.headers||{},e.invocationId,t]);break;case this._nonVoidResult:n=this._encoder.encode([tn.Completion,e.headers||{},e.invocationId,t,e.result])}return ho.write(n.slice())}_writeCancelInvocation(e){const t=this._encoder.encode([tn.CancelInvocation,e.headers||{},e.invocationId]);return ho.write(t.slice())}_writeClose(){const e=this._encoder.encode([tn.Close,null]);return ho.write(e.slice())}_writeAck(e){const t=this._encoder.encode([tn.Ack,e.sequenceId]);return ho.write(t.slice())}_writeSequence(e){const t=this._encoder.encode([tn.Sequence,e.sequenceId]);return ho.write(t.slice())}_readHeaders(e){const t=e[1];if("object"!=typeof t)throw new Error("Invalid headers.");return t}}const fo="function"==typeof TextDecoder?new TextDecoder("utf-8"):null,go=fo?fo.decode.bind(fo):function(e){let t=0;const n=e.length,o=[],r=[];for(;t<n;){const n=e[t++];if(0===n)break;if(0==(128&n))o.push(n);else if(192==(224&n)){const r=63&e[t++];o.push((31&n)<<6|r)}else if(224==(240&n)){const r=63&e[t++],s=63&e[t++];o.push((31&n)<<12|r<<6|s)}else if(240==(248&n)){let r=(7&n)<<18|(63&e[t++])<<12|(63&e[t++])<<6|63&e[t++];r>65535&&(r-=65536,o.push(r>>>10&1023|55296),r=56320|1023&r),o.push(r)}o.length>1024&&(r.push(String.fromCharCode.apply(null,o)),o.length=0)}return r.push(String.fromCharCode.apply(null,o)),r.join("")},mo=Math.pow(2,32),yo=Math.pow(2,21)-1;function vo(e,t){return e[t]|e[t+1]<<8|e[t+2]<<16|e[t+3]<<24}function wo(e,t){return e[t]+(e[t+1]<<8)+(e[t+2]<<16)+(e[t+3]<<24>>>0)}function bo(e,t){const n=wo(e,t+4);if(n>yo)throw new Error(`Cannot read uint64 with high order part ${n}, because the result would exceed Number.MAX_SAFE_INTEGER.`);return n*mo+wo(e,t)}class _o{constructor(e){this.batchData=e;const t=new Io(e);this.arrayRangeReader=new ko(e),this.arrayBuilderSegmentReader=new To(e),this.diffReader=new So(e),this.editReader=new Eo(e,t),this.frameReader=new Co(e,t)}updatedComponents(){return vo(this.batchData,this.batchData.length-20)}referenceFrames(){return vo(this.batchData,this.batchData.length-16)}disposedComponentIds(){return vo(this.batchData,this.batchData.length-12)}disposedEventHandlerIds(){return vo(this.batchData,this.batchData.length-8)}updatedComponentsEntry(e,t){const n=e+4*t;return vo(this.batchData,n)}referenceFramesEntry(e,t){return e+20*t}disposedComponentIdsEntry(e,t){const n=e+4*t;return vo(this.batchData,n)}disposedEventHandlerIdsEntry(e,t){const n=e+8*t;return bo(this.batchData,n)}}class So{constructor(e){this.batchDataUint8=e}componentId(e){return vo(this.batchDataUint8,e)}edits(e){return e+4}editsEntry(e,t){return e+16*t}}class Eo{constructor(e,t){this.batchDataUint8=e,this.stringReader=t}editType(e){return vo(this.batchDataUint8,e)}siblingIndex(e){return vo(this.batchDataUint8,e+4)}newTreeIndex(e){return vo(this.batchDataUint8,e+8)}moveToSiblingIndex(e){return vo(this.batchDataUint8,e+8)}removedAttributeName(e){const t=vo(this.batchDataUint8,e+12);return this.stringReader.readString(t)}}class Co{constructor(e,t){this.batchDataUint8=e,this.stringReader=t}frameType(e){return vo(this.batchDataUint8,e)}subtreeLength(e){return vo(this.batchDataUint8,e+4)}elementReferenceCaptureId(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}componentId(e){return vo(this.batchDataUint8,e+8)}elementName(e){const t=vo(this.batchDataUint8,e+8);return this.stringReader.readString(t)}textContent(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}markupContent(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}attributeName(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}attributeValue(e){const t=vo(this.batchDataUint8,e+8);return this.stringReader.readString(t)}attributeEventHandlerId(e){return bo(this.batchDataUint8,e+12)}}class Io{constructor(e){this.batchDataUint8=e,this.stringTableStartIndex=vo(e,e.length-4)}readString(e){if(-1===e)return null;{const n=vo(this.batchDataUint8,this.stringTableStartIndex+4*e),o=function(e,t){let n=0,o=0;for(let r=0;r<4;r++){const s=e[t+r];if(n|=(127&s)<<o,s<128)break;o+=7}return n}(this.batchDataUint8,n),r=n+((t=o)<128?1:t<16384?2:t<2097152?3:4),s=new Uint8Array(this.batchDataUint8.buffer,this.batchDataUint8.byteOffset+r,o);return go(s)}var t}}class ko{constructor(e){this.batchDataUint8=e}count(e){return vo(this.batchDataUint8,e)}values(e){return e+4}}class To{constructor(e){this.batchDataUint8=e}offset(e){return 0}count(e){return vo(this.batchDataUint8,e)}values(e){return e+4}}class Do{constructor(e){this.nextBatchId=2,this.logger=e}async processBatch(e,t,n){if(e<this.nextBatchId)return await this.completeBatch(n,e),void this.logger.log(ft.Debug,`Batch ${e} already processed. Waiting for batch ${this.nextBatchId}.`);if(e>this.nextBatchId)return this.fatalError?(this.logger.log(ft.Debug,`Received a new batch ${e} but errored out on a previous batch ${this.nextBatchId-1}`),void await n.send("OnRenderCompleted",this.nextBatchId-1,this.fatalError.toString())):void this.logger.log(ft.Debug,`Waiting for batch ${this.nextBatchId}. Batch ${e} not processed.`);try{this.nextBatchId++,this.logger.log(ft.Debug,`Applying batch ${e}.`),Ce(xn.Server,new _o(t)),await this.completeBatch(n,e)}catch(t){throw this.fatalError=t.toString(),this.logger.log(ft.Error,`There was an error applying batch ${e}.`),n.send("OnRenderCompleted",e,t.toString()),t}}getLastBatchid(){return this.nextBatchId-1}async completeBatch(e,t){try{await e.send("OnRenderCompleted",t,null)}catch{this.logger.log(ft.Warning,`Failed to deliver completion notification for render '${t}'.`)}}}let Ro=!1;function xo(){const e=document.querySelector("#blazor-error-ui");e&&(e.style.display="block"),Ro||(Ro=!0,document.querySelectorAll("#blazor-error-ui .reload").forEach((e=>{e.onclick=function(e){location.reload(),e.preventDefault()}})),document.querySelectorAll("#blazor-error-ui .dismiss").forEach((e=>{e.onclick=function(e){const t=document.querySelector("#blazor-error-ui");t&&(t.style.display="none"),e.preventDefault()}})))}class Ao{constructor(t,n,o,r){this._renderingFailed=!1,this._disposed=!1,this._circuitId=void 0,this._applicationState=n,this._componentManager=t,this._options=o,this._logger=r,this._renderQueue=new Do(this._logger),this._dispatcher=e.attachDispatcher(this)}start(){if(this.isDisposedOrDisposing())throw new Error("Cannot start a disposed circuit.");return this._startPromise||(this._startPromise=this.startCore()),this._startPromise}async startCore(){if(this._connection=await this.startConnection(),this._connection.state!==nn.Connected)return!1;const e=JSON.stringify(this._componentManager.initialComponents.map((e=>Dt(e))));return this._circuitId=await this._connection.invoke("StartCircuit",We.getBaseURI(),We.getLocationHref(),e,this._applicationState||""),!!this._circuitId}async startConnection(){var e,t;const n=new po;n.name="blazorpack";const o=(new Rn).withUrl("_blazor").withHubProtocol(n);this._options.configureSignalR(o);const r=o.build();r.on("JS.AttachComponent",((e,t)=>Se(xn.Server,this.resolveElement(t,e),e,!1))),r.on("JS.BeginInvokeJS",this._dispatcher.beginInvokeJSFromDotNet.bind(this._dispatcher)),r.on("JS.EndInvokeDotNet",this._dispatcher.endInvokeDotNetFromJS.bind(this._dispatcher)),r.on("JS.ReceiveByteArray",this._dispatcher.receiveByteArray.bind(this._dispatcher)),r.on("JS.BeginTransmitStream",(e=>{const t=new ReadableStream({start:t=>{r.stream("SendDotNetStreamToJS",e).subscribe({next:e=>t.enqueue(e),complete:()=>t.close(),error:e=>t.error(e)})}});this._dispatcher.supplyDotNetStream(e,t)})),r.on("JS.RenderBatch",(async(e,t)=>{var n,o;this._logger.log(At.Debug,`Received render batch with id ${e} and ${t.byteLength} bytes.`),await this._renderQueue.processBatch(e,t,this._connection),null===(o=(n=this._componentManager).onAfterRenderBatch)||void 0===o||o.call(n,xn.Server)})),r.on("JS.EndLocationChanging",pt._internal.navigationManager.endLocationChanging),r.onclose((e=>!this._disposed&&!this._renderingFailed&&this._options.reconnectionHandler.onConnectionDown(this._options.reconnectionOptions,e))),r.on("JS.Error",(e=>{this._renderingFailed=!0,this.unhandledError(e),xo()}));try{await r.start()}catch(e){if(this.unhandledError(e),"FailedToNegotiateWithServerError"===e.errorType)throw e;xo(),e.innerErrors&&(e.innerErrors.some((e=>"UnsupportedTransportError"===e.errorType&&e.transport===vn.WebSockets))?this._logger.log(At.Error,"Unable to connect, please ensure you are using an updated browser that supports WebSockets."):e.innerErrors.some((e=>"FailedToStartTransportError"===e.errorType&&e.transport===vn.WebSockets))?this._logger.log(At.Error,"Unable to connect, please ensure WebSockets are available. A VPN or proxy may be blocking the connection."):e.innerErrors.some((e=>"DisabledTransportError"===e.errorType&&e.transport===vn.LongPolling))&&this._logger.log(At.Error,"Unable to initiate a SignalR connection to the server. This might be because the server is not configured to support WebSockets. For additional details, visit https://aka.ms/blazor-server-websockets-error."))}return(null===(t=null===(e=r.connection)||void 0===e?void 0:e.features)||void 0===t?void 0:t.inherentKeepAlive)&&this._logger.log(At.Warning,"Failed to connect via WebSockets, using the Long Polling fallback transport. This may be due to a VPN or proxy blocking the connection. To troubleshoot this, visit https://aka.ms/blazor-server-using-fallback-long-polling."),r}async disconnect(){var e;await(null===(e=this._connection)||void 0===e?void 0:e.stop())}async reconnect(){if(!this._circuitId)throw new Error("Circuit host not initialized.");return this._connection.state===nn.Connected||(this._connection=await this.startConnection(),!!await this._connection.invoke("ConnectCircuit",this._circuitId)&&(this._options.reconnectionHandler.onConnectionUp(),!0))}beginInvokeDotNetFromJS(e,t,n,o,r){this.throwIfDispatchingWhenDisposed(),this._connection.send("BeginInvokeDotNetFromJS",e?e.toString():null,t,n,o||0,r)}endInvokeJSFromDotNet(e,t,n){this.throwIfDispatchingWhenDisposed(),this._connection.send("EndInvokeJSFromDotNet",e,t,n)}sendByteArray(e,t){this.throwIfDispatchingWhenDisposed(),this._connection.send("ReceiveByteArray",e,t)}throwIfDispatchingWhenDisposed(){if(this._disposed)throw new Error("The circuit associated with this dispatcher is no longer available.")}sendLocationChanged(e,t,n){return this._connection.send("OnLocationChanged",e,t,n)}sendLocationChanging(e,t,n,o){return this._connection.send("OnLocationChanging",e,t,n,o)}sendJsDataStream(e,t,n){return function(e,t,n,o){setTimeout((async()=>{let r=5,s=(new Date).valueOf();try{const i=t instanceof Blob?t.size:t.byteLength;let a=0,c=0;for(;a<i;){const l=Math.min(o,i-a),h=await dt(t,a,l);if(r--,r>1)await e.send("ReceiveJSDataChunk",n,c,h,null);else{if(!await e.invoke("ReceiveJSDataChunk",n,c,h,null))break;const t=(new Date).valueOf(),o=t-s;s=t,r=Math.max(1,Math.round(500/Math.max(1,o)))}a+=l,c++}}catch(t){await e.send("ReceiveJSDataChunk",n,-1,null,t.toString())}}),0)}(this._connection,e,t,n)}resolveElement(e,t){const n=w(e);if(n)return H(n,!0);const o=Number.parseInt(e);if(!Number.isNaN(o))return $(this._componentManager.resolveRootComponent(o,t));throw new Error(`Invalid sequence number or identifier '${e}'.`)}getRootComponentManager(){return this._componentManager}unhandledError(e){this._logger.log(At.Error,e),this.disconnect()}getDisconnectFormData(){const e=new FormData,t=this._circuitId;return e.append("circuitId",t),e}didRenderingFail(){return this._renderingFailed}isDisposedOrDisposing(){return void 0!==this._disposePromise}sendDisconnectBeacon(){if(this._disposed)return;const e=this.getDisconnectFormData();this._disposed=navigator.sendBeacon("_blazor/disconnect",e)}dispose(){return this._disposePromise||(this._disposePromise=this.disposeCore()),this._disposePromise}async disposeCore(){var e;if(!this._startPromise)return void(this._disposed=!0);await this._startPromise,this._disposed=!0,null===(e=this._connection)||void 0===e||e.stop();const t=this.getDisconnectFormData();fetch("_blazor/disconnect",{method:"POST",body:t}),function(e){if(!E.delete(e))throw new Error(`Interop methods are not registered for renderer ${e}`)}(xn.Server)}}const No={configureSignalR:e=>{},logLevel:ft.Warning,reconnectionOptions:{maxRetries:8,retryIntervalMilliseconds:2e4,dialogId:"components-reconnect-modal"}};class Po{constructor(e,t,n,o){this.maxRetries=t,this.document=n,this.logger=o,this.addedToDom=!1,this.modal=this.document.createElement("div"),this.modal.id=e,this.maxRetries=t,this.modal.style.cssText=["position: fixed","top: 0","right: 0","bottom: 0","left: 0","z-index: 1050","display: none","overflow: hidden","background-color: #fff","opacity: 0.8","text-align: center","font-weight: bold","transition: visibility 0s linear 500ms"].join(";"),this.message=this.document.createElement("h5"),this.message.style.cssText="margin-top: 20px",this.button=this.document.createElement("button"),this.button.style.cssText="margin:5px auto 5px",this.button.textContent="Retry";const r=this.document.createElement("a");r.addEventListener("click",(()=>location.reload())),r.textContent="reload",this.reloadParagraph=this.document.createElement("p"),this.reloadParagraph.textContent="Alternatively, ",this.reloadParagraph.appendChild(r),this.modal.appendChild(this.message),this.modal.appendChild(this.button),this.modal.appendChild(this.reloadParagraph),this.loader=this.getLoader(),this.message.after(this.loader),this.button.addEventListener("click",(async()=>{this.show();try{await pt.reconnect()||this.rejected()}catch(e){this.logger.log(ft.Error,e),this.failed()}}))}show(){this.addedToDom||(this.addedToDom=!0,this.document.body.appendChild(this.modal)),this.modal.style.display="block",this.loader.style.display="inline-block",this.button.style.display="none",this.reloadParagraph.style.display="none",this.message.textContent="Attempting to reconnect to the server...",this.modal.style.visibility="hidden",setTimeout((()=>{this.modal.style.visibility="visible"}),0)}update(e){this.message.textContent=`Attempting to reconnect to the server: ${e} of ${this.maxRetries}`}hide(){this.modal.style.display="none"}failed(){this.button.style.display="block",this.reloadParagraph.style.display="none",this.loader.style.display="none";const e=this.document.createTextNode("Reconnection failed. Try "),t=this.document.createElement("a");t.textContent="reloading",t.setAttribute("href",""),t.addEventListener("click",(()=>location.reload()));const n=this.document.createTextNode(" the page if you're unable to reconnect.");this.message.replaceChildren(e,t,n)}rejected(){this.button.style.display="none",this.reloadParagraph.style.display="none",this.loader.style.display="none";const e=this.document.createTextNode("Could not reconnect to the server. "),t=this.document.createElement("a");t.textContent="Reload",t.setAttribute("href",""),t.addEventListener("click",(()=>location.reload()));const n=this.document.createTextNode(" the page to restore functionality.");this.message.replaceChildren(e,t,n)}getLoader(){const e=this.document.createElement("div");return e.style.cssText=["border: 0.3em solid #f3f3f3","border-top: 0.3em solid #3498db","border-radius: 50%","width: 2em","height: 2em","display: inline-block"].join(";"),e.animate([{transform:"rotate(0deg)"},{transform:"rotate(360deg)"}],{duration:2e3,iterations:1/0}),e}}class Mo{constructor(e,t,n){this.dialog=e,this.maxRetries=t,this.document=n,this.document=n;const o=this.document.getElementById(Mo.MaxRetriesId);o&&(o.innerText=this.maxRetries.toString())}show(){this.removeClasses(),this.dialog.classList.add(Mo.ShowClassName)}update(e){const t=this.document.getElementById(Mo.CurrentAttemptId);t&&(t.innerText=e.toString())}hide(){this.removeClasses(),this.dialog.classList.add(Mo.HideClassName)}failed(){this.removeClasses(),this.dialog.classList.add(Mo.FailedClassName)}rejected(){this.removeClasses(),this.dialog.classList.add(Mo.RejectedClassName)}removeClasses(){this.dialog.classList.remove(Mo.ShowClassName,Mo.HideClassName,Mo.FailedClassName,Mo.RejectedClassName)}}Mo.ShowClassName="components-reconnect-show",Mo.HideClassName="components-reconnect-hide",Mo.FailedClassName="components-reconnect-failed",Mo.RejectedClassName="components-reconnect-rejected",Mo.MaxRetriesId="components-reconnect-max-retries",Mo.CurrentAttemptId="components-reconnect-current-attempt";class Uo{constructor(e,t,n){this._currentReconnectionProcess=null,this._logger=e,this._reconnectionDisplay=t,this._reconnectCallback=n||pt.reconnect}onConnectionDown(e,t){if(!this._reconnectionDisplay){const 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t=document.documentElement.style;t.fontFamily="consolas, monospace",t.whiteSpace="pre-wrap",t.padding="1rem"}let ls,hs=!0;class ds extends HTMLElement{connectedCallback(){var e;const t=this.parentNode;null===(e=t.parentNode)||void 0===e||e.removeChild(t),t.childNodes.forEach((e=>{if(e instanceof HTMLTemplateElement){const t=e.getAttribute("blazor-component-id");if(t)!function(e,t){const n=function(e){const t=`bl:${e}`,n=document.createNodeIterator(document,NodeFilter.SHOW_COMMENT);let o=null;for(;(o=n.nextNode())&&o.textContent!==t;);if(!o)return null;const r=`/bl:${e}`;let s=null;for(;(s=n.nextNode())&&s.textContent!==r;);return s?{startMarker:o,endMarker:s}:null}(e);if(n){const{startMarker:e,endMarker:o}=n;if(hs)Jr({startExclusive:e,endExclusive:o},t);else{const n=o.parentNode,r=new Range;for(r.setStart(e,e.textContent.length),r.setEnd(o,0),r.deleteContents();t.childNodes[0];)n.insertBefore(t.childNodes[0],o)}ls.documentUpdated()}}(t,e.content);else 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0!==kr)return;const e=Ar();setTimeout((()=>{Nr()||this.onWebAssemblyFailedToLoadQuickly()}),pt._internal.loadWebAssemblyQuicklyTimeout);const t=await xr;(function(e){if(!e.cacheBootResources)return!1;const t=ps(e);if(!t)return!1;const n=window.localStorage.getItem(t.key);return t.value===n})(t)||this.onWebAssemblyFailedToLoadQuickly(),await e,function(e){const t=ps(e);t&&window.localStorage.setItem(t.key,t.value)}(t),this.rootComponentsMayRequireRefresh()}onWebAssemblyFailedToLoadQuickly(){this._didWebAssemblyFailToLoadQuickly||(this._didWebAssemblyFailToLoadQuickly=!0,this.rootComponentsMayRequireRefresh())}startCircutIfNotStarted(){return Wo?Oo.isDisposedOrDisposing()?function(){if(!Wo)throw new Error("Cannot start the circuit until Blazor Server has started.");return Oo.didRenderingFail()?Promise.resolve(!1):(Oo.isDisposedOrDisposing()&&(Oo=new Ao(Oo.getRootComponentManager(),Fo,$o,Ho)),Oo.start())}():void 0:async function(e){if(Wo)throw new Error("Blazor Server has already 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Wt(){if(!Ut.isNode)return"";switch(process.platform){case"win32":return"Windows NT";case"darwin":return"macOS";case"linux":return"Linux";default:return process.platform}}function qt(){if(Ut.isNode)return process.versions.node}function zt(e){return e.stack?e.stack:e.message?e.message:`${e}`}class Jt{writeHandshakeRequest(e){return xt.write(JSON.stringify(e))}parseHandshakeResponse(e){let t,n;if(Bt(e)){const o=new Uint8Array(e),r=o.indexOf(xt.RecordSeparatorCode);if(-1===r)throw new Error("Message is incomplete.");const i=r+1;t=String.fromCharCode.apply(null,Array.prototype.slice.call(o.slice(0,i))),n=o.byteLength>i?o.slice(i).buffer:null}else{const o=e,r=o.indexOf(xt.RecordSeparator);if(-1===r)throw new Error("Message is incomplete.");const i=r+1;t=o.substring(0,i),n=o.length>i?o.substring(i):null}const o=xt.parse(t),r=JSON.parse(o[0]);if(r.type)throw new Error("Expected a handshake response from the server.");return[n,r]}}class Kt extends Error{constructor(e,t){const n=new.target.prototype;super(`${e}: Status code '${t}'`),this.statusCode=t,this.__proto__=n}}class Vt extends Error{constructor(e="A timeout occurred."){const t=new.target.prototype;super(e),this.__proto__=t}}class Xt extends Error{constructor(e="An abort occurred."){const t=new.target.prototype;super(e),this.__proto__=t}}class Gt extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.transport=t,this.errorType="UnsupportedTransportError",this.__proto__=n}}class Yt extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.transport=t,this.errorType="DisabledTransportError",this.__proto__=n}}class Qt extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.transport=t,this.errorType="FailedToStartTransportError",this.__proto__=n}}class Zt extends Error{constructor(e){const t=new.target.prototype;super(e),this.errorType="FailedToNegotiateWithServerError",this.__proto__=t}}class en extends Error{constructor(e,t){const n=new.target.prototype;super(e),this.innerErrors=t,this.__proto__=n}}var tn,nn;!function(e){e[e.Invocation=1]="Invocation",e[e.StreamItem=2]="StreamItem",e[e.Completion=3]="Completion",e[e.StreamInvocation=4]="StreamInvocation",e[e.CancelInvocation=5]="CancelInvocation",e[e.Ping=6]="Ping",e[e.Close=7]="Close",e[e.Ack=8]="Ack",e[e.Sequence=9]="Sequence"}(tn||(tn={}));class on{constructor(){this.observers=[]}next(e){for(const t of this.observers)t.next(e)}error(e){for(const t of this.observers)t.error&&t.error(e)}complete(){for(const e of this.observers)e.complete&&e.complete()}subscribe(e){return this.observers.push(e),new Ot(this,e)}}class rn{constructor(e,t,n){this._bufferSize=1e5,this._messages=[],this._totalMessageCount=0,this._waitForSequenceMessage=!1,this._nextReceivingSequenceId=1,this._latestReceivedSequenceId=0,this._bufferedByteCount=0,this._reconnectInProgress=!1,this._protocol=e,this._connection=t,this._bufferSize=n}async _send(e){const t=this._protocol.writeMessage(e);let n=Promise.resolve();if(this._isInvocationMessage(e)){this._totalMessageCount++;let e=()=>{},o=()=>{};Bt(t)?this._bufferedByteCount+=t.byteLength:this._bufferedByteCount+=t.length,this._bufferedByteCount>=this._bufferSize&&(n=new Promise(((t,n)=>{e=t,o=n}))),this._messages.push(new sn(t,this._totalMessageCount,e,o))}try{this._reconnectInProgress||await this._connection.send(t)}catch{this._disconnected()}await n}_ack(e){let t=-1;for(let n=0;n<this._messages.length;n++){const o=this._messages[n];if(o._id<=e.sequenceId)t=n,Bt(o._message)?this._bufferedByteCount-=o._message.byteLength:this._bufferedByteCount-=o._message.length,o._resolver();else{if(!(this._bufferedByteCount<this._bufferSize))break;o._resolver()}}-1!==t&&(this._messages=this._messages.slice(t+1))}_shouldProcessMessage(e){if(this._waitForSequenceMessage)return e.type===tn.Sequence&&(this._waitForSequenceMessage=!1,!0);if(!this._isInvocationMessage(e))return!0;const t=this._nextReceivingSequenceId;return this._nextReceivingSequenceId++,t<=this._latestReceivedSequenceId?(t===this._latestReceivedSequenceId&&this._ackTimer(),!1):(this._latestReceivedSequenceId=t,this._ackTimer(),!0)}_resetSequence(e){e.sequenceId>this._nextReceivingSequenceId?this._connection.stop(new Error("Sequence ID greater than amount of messages we've received.")):this._nextReceivingSequenceId=e.sequenceId}_disconnected(){this._reconnectInProgress=!0,this._waitForSequenceMessage=!0}async _resend(){const e=0!==this._messages.length?this._messages[0]._id:this._totalMessageCount+1;await this._connection.send(this._protocol.writeMessage({type:tn.Sequence,sequenceId:e}));const t=this._messages;for(const e of t)await this._connection.send(e._message);this._reconnectInProgress=!1}_dispose(e){null!=e||(e=new Error("Unable to reconnect to server."));for(const t of this._messages)t._rejector(e)}_isInvocationMessage(e){switch(e.type){case tn.Invocation:case tn.StreamItem:case tn.Completion:case tn.StreamInvocation:case tn.CancelInvocation:return!0;case tn.Close:case tn.Sequence:case tn.Ping:case tn.Ack:return!1}}_ackTimer(){void 0===this._ackTimerHandle&&(this._ackTimerHandle=setTimeout((async()=>{try{this._reconnectInProgress||await this._connection.send(this._protocol.writeMessage({type:tn.Ack,sequenceId:this._latestReceivedSequenceId}))}catch{}clearTimeout(this._ackTimerHandle),this._ackTimerHandle=void 0}),1e3))}}class sn{constructor(e,t,n,o){this._message=e,this._id=t,this._resolver=n,this._rejector=o}}!function(e){e.Disconnected="Disconnected",e.Connecting="Connecting",e.Connected="Connected",e.Disconnecting="Disconnecting",e.Reconnecting="Reconnecting"}(nn||(nn={}));class an{static create(e,t,n,o,r,i,s){return new an(e,t,n,o,r,i,s)}constructor(e,t,n,o,r,i,s){this._nextKeepAlive=0,this._freezeEventListener=()=>{this._logger.log(At.Warning,"The page is being frozen, this will likely lead to the connection being closed and messages being lost. For more information see the docs at https://learn.microsoft.com/aspnet/core/signalr/javascript-client#bsleep")},Mt.isRequired(e,"connection"),Mt.isRequired(t,"logger"),Mt.isRequired(n,"protocol"),this.serverTimeoutInMilliseconds=null!=r?r:3e4,this.keepAliveIntervalInMilliseconds=null!=i?i:15e3,this._statefulReconnectBufferSize=null!=s?s:1e5,this._logger=t,this._protocol=n,this.connection=e,this._reconnectPolicy=o,this._handshakeProtocol=new Jt,this.connection.onreceive=e=>this._processIncomingData(e),this.connection.onclose=e=>this._connectionClosed(e),this._callbacks={},this._methods={},this._closedCallbacks=[],this._reconnectingCallbacks=[],this._reconnectedCallbacks=[],this._invocationId=0,this._receivedHandshakeResponse=!1,this._connectionState=nn.Disconnected,this._connectionStarted=!1,this._cachedPingMessage=this._protocol.writeMessage({type:tn.Ping})}get state(){return this._connectionState}get connectionId(){return this.connection&&this.connection.connectionId||null}get baseUrl(){return this.connection.baseUrl||""}set baseUrl(e){if(this._connectionState!==nn.Disconnected&&this._connectionState!==nn.Reconnecting)throw new Error("The HubConnection must be in the Disconnected or Reconnecting state to change the url.");if(!e)throw new Error("The HubConnection url must be a valid url.");this.connection.baseUrl=e}start(){return this._startPromise=this._startWithStateTransitions(),this._startPromise}async _startWithStateTransitions(){if(this._connectionState!==nn.Disconnected)return Promise.reject(new Error("Cannot start a HubConnection that is not in the 'Disconnected' state."));this._connectionState=nn.Connecting,this._logger.log(At.Debug,"Starting HubConnection.");try{await this._startInternal(),Ut.isBrowser&&window.document.addEventListener("freeze",this._freezeEventListener),this._connectionState=nn.Connected,this._connectionStarted=!0,this._logger.log(At.Debug,"HubConnection connected successfully.")}catch(e){return this._connectionState=nn.Disconnected,this._logger.log(At.Debug,`HubConnection failed to start successfully because of error '${e}'.`),Promise.reject(e)}}async _startInternal(){this._stopDuringStartError=void 0,this._receivedHandshakeResponse=!1;const e=new Promise(((e,t)=>{this._handshakeResolver=e,this._handshakeRejecter=t}));await this.connection.start(this._protocol.transferFormat);try{const t={protocol:this._protocol.name,version:this._protocol.version};if(this._logger.log(At.Debug,"Sending handshake request."),await this._sendMessage(this._handshakeProtocol.writeHandshakeRequest(t)),this._logger.log(At.Information,`Using HubProtocol '${this._protocol.name}'.`),this._cleanupTimeout(),this._resetTimeoutPeriod(),this._resetKeepAliveInterval(),await e,this._stopDuringStartError)throw this._stopDuringStartError;!!this.connection.features.reconnect&&(this._messageBuffer=new rn(this._protocol,this.connection,this._statefulReconnectBufferSize),this.connection.features.disconnected=this._messageBuffer._disconnected.bind(this._messageBuffer),this.connection.features.resend=()=>{if(this._messageBuffer)return this._messageBuffer._resend()}),this.connection.features.inherentKeepAlive||await this._sendMessage(this._cachedPingMessage)}catch(e){throw this._logger.log(At.Debug,`Hub handshake failed with error '${e}' during start(). Stopping HubConnection.`),this._cleanupTimeout(),this._cleanupPingTimer(),await this.connection.stop(e),e}}async stop(){const e=this._startPromise;this.connection.features.reconnect=!1,this._stopPromise=this._stopInternal(),await this._stopPromise;try{await e}catch(e){}}_stopInternal(e){if(this._connectionState===nn.Disconnected)return this._logger.log(At.Debug,`Call to HubConnection.stop(${e}) ignored because it is already in the disconnected state.`),Promise.resolve();if(this._connectionState===nn.Disconnecting)return this._logger.log(At.Debug,`Call to HttpConnection.stop(${e}) ignored because the connection is already in the disconnecting state.`),this._stopPromise;const t=this._connectionState;return this._connectionState=nn.Disconnecting,this._logger.log(At.Debug,"Stopping HubConnection."),this._reconnectDelayHandle?(this._logger.log(At.Debug,"Connection stopped during reconnect delay. Done reconnecting."),clearTimeout(this._reconnectDelayHandle),this._reconnectDelayHandle=void 0,this._completeClose(),Promise.resolve()):(t===nn.Connected&&this._sendCloseMessage(),this._cleanupTimeout(),this._cleanupPingTimer(),this._stopDuringStartError=e||new Xt("The connection was stopped before the hub handshake could complete."),this.connection.stop(e))}async _sendCloseMessage(){try{await this._sendWithProtocol(this._createCloseMessage())}catch{}}stream(e,...t){const[n,o]=this._replaceStreamingParams(t),r=this._createStreamInvocation(e,t,o);let i;const s=new on;return s.cancelCallback=()=>{const e=this._createCancelInvocation(r.invocationId);return delete this._callbacks[r.invocationId],i.then((()=>this._sendWithProtocol(e)))},this._callbacks[r.invocationId]=(e,t)=>{t?s.error(t):e&&(e.type===tn.Completion?e.error?s.error(new Error(e.error)):s.complete():s.next(e.item))},i=this._sendWithProtocol(r).catch((e=>{s.error(e),delete this._callbacks[r.invocationId]})),this._launchStreams(n,i),s}_sendMessage(e){return this._resetKeepAliveInterval(),this.connection.send(e)}_sendWithProtocol(e){return this._messageBuffer?this._messageBuffer._send(e):this._sendMessage(this._protocol.writeMessage(e))}send(e,...t){const[n,o]=this._replaceStreamingParams(t),r=this._sendWithProtocol(this._createInvocation(e,t,!0,o));return this._launchStreams(n,r),r}invoke(e,...t){const[n,o]=this._replaceStreamingParams(t),r=this._createInvocation(e,t,!1,o);return new Promise(((e,t)=>{this._callbacks[r.invocationId]=(n,o)=>{o?t(o):n&&(n.type===tn.Completion?n.error?t(new Error(n.error)):e(n.result):t(new Error(`Unexpected message type: ${n.type}`)))};const o=this._sendWithProtocol(r).catch((e=>{t(e),delete this._callbacks[r.invocationId]}));this._launchStreams(n,o)}))}on(e,t){e&&t&&(e=e.toLowerCase(),this._methods[e]||(this._methods[e]=[]),-1===this._methods[e].indexOf(t)&&this._methods[e].push(t))}off(e,t){if(!e)return;e=e.toLowerCase();const n=this._methods[e];if(n)if(t){const o=n.indexOf(t);-1!==o&&(n.splice(o,1),0===n.length&&delete this._methods[e])}else delete this._methods[e]}onclose(e){e&&this._closedCallbacks.push(e)}onreconnecting(e){e&&this._reconnectingCallbacks.push(e)}onreconnected(e){e&&this._reconnectedCallbacks.push(e)}_processIncomingData(e){if(this._cleanupTimeout(),this._receivedHandshakeResponse||(e=this._processHandshakeResponse(e),this._receivedHandshakeResponse=!0),e){const t=this._protocol.parseMessages(e,this._logger);for(const e of t)if(!this._messageBuffer||this._messageBuffer._shouldProcessMessage(e))switch(e.type){case tn.Invocation:this._invokeClientMethod(e);break;case tn.StreamItem:case tn.Completion:{const t=this._callbacks[e.invocationId];if(t){e.type===tn.Completion&&delete this._callbacks[e.invocationId];try{t(e)}catch(e){this._logger.log(At.Error,`Stream callback threw error: ${zt(e)}`)}}break}case tn.Ping:break;case tn.Close:{this._logger.log(At.Information,"Close message received from server.");const t=e.error?new Error("Server returned an error on close: "+e.error):void 0;!0===e.allowReconnect?this.connection.stop(t):this._stopPromise=this._stopInternal(t);break}case tn.Ack:this._messageBuffer&&this._messageBuffer._ack(e);break;case tn.Sequence:this._messageBuffer&&this._messageBuffer._resetSequence(e);break;default:this._logger.log(At.Warning,`Invalid message type: ${e.type}.`)}}this._resetTimeoutPeriod()}_processHandshakeResponse(e){let t,n;try{[n,t]=this._handshakeProtocol.parseHandshakeResponse(e)}catch(e){const t="Error parsing handshake response: "+e;this._logger.log(At.Error,t);const n=new Error(t);throw this._handshakeRejecter(n),n}if(t.error){const e="Server returned handshake error: "+t.error;this._logger.log(At.Error,e);const n=new Error(e);throw this._handshakeRejecter(n),n}return this._logger.log(At.Debug,"Server handshake complete."),this._handshakeResolver(),n}_resetKeepAliveInterval(){this.connection.features.inherentKeepAlive||(this._nextKeepAlive=(new Date).getTime()+this.keepAliveIntervalInMilliseconds,this._cleanupPingTimer())}_resetTimeoutPeriod(){if(!(this.connection.features&&this.connection.features.inherentKeepAlive||(this._timeoutHandle=setTimeout((()=>this.serverTimeout()),this.serverTimeoutInMilliseconds),void 0!==this._pingServerHandle))){let e=this._nextKeepAlive-(new Date).getTime();e<0&&(e=0),this._pingServerHandle=setTimeout((async()=>{if(this._connectionState===nn.Connected)try{await this._sendMessage(this._cachedPingMessage)}catch{this._cleanupPingTimer()}}),e)}}serverTimeout(){this.connection.stop(new Error("Server timeout elapsed without receiving a message from the server."))}async _invokeClientMethod(e){const t=e.target.toLowerCase(),n=this._methods[t];if(!n)return this._logger.log(At.Warning,`No client method with the name '${t}' found.`),void(e.invocationId&&(this._logger.log(At.Warning,`No result given for '${t}' method and invocation ID '${e.invocationId}'.`),await this._sendWithProtocol(this._createCompletionMessage(e.invocationId,"Client didn't provide a result.",null))));const o=n.slice(),r=!!e.invocationId;let i,s,a;for(const n of o)try{const o=i;i=await n.apply(this,e.arguments),r&&i&&o&&(this._logger.log(At.Error,`Multiple results provided for '${t}'. Sending error to server.`),a=this._createCompletionMessage(e.invocationId,"Client provided multiple results.",null)),s=void 0}catch(e){s=e,this._logger.log(At.Error,`A callback for the method '${t}' threw error '${e}'.`)}a?await this._sendWithProtocol(a):r?(s?a=this._createCompletionMessage(e.invocationId,`${s}`,null):void 0!==i?a=this._createCompletionMessage(e.invocationId,null,i):(this._logger.log(At.Warning,`No result given for '${t}' method and invocation ID '${e.invocationId}'.`),a=this._createCompletionMessage(e.invocationId,"Client didn't provide a result.",null)),await this._sendWithProtocol(a)):i&&this._logger.log(At.Error,`Result given for '${t}' method but server is not expecting a result.`)}_connectionClosed(e){this._logger.log(At.Debug,`HubConnection.connectionClosed(${e}) called while in state ${this._connectionState}.`),this._stopDuringStartError=this._stopDuringStartError||e||new Xt("The underlying connection was closed before the hub handshake could complete."),this._handshakeResolver&&this._handshakeResolver(),this._cancelCallbacksWithError(e||new Error("Invocation canceled due to the underlying connection being closed.")),this._cleanupTimeout(),this._cleanupPingTimer(),this._connectionState===nn.Disconnecting?this._completeClose(e):this._connectionState===nn.Connected&&this._reconnectPolicy?this._reconnect(e):this._connectionState===nn.Connected&&this._completeClose(e)}_completeClose(e){if(this._connectionStarted){this._connectionState=nn.Disconnected,this._connectionStarted=!1,this._messageBuffer&&(this._messageBuffer._dispose(null!=e?e:new Error("Connection closed.")),this._messageBuffer=void 0),Ut.isBrowser&&window.document.removeEventListener("freeze",this._freezeEventListener);try{this._closedCallbacks.forEach((t=>t.apply(this,[e])))}catch(t){this._logger.log(At.Error,`An onclose callback called with error '${e}' threw error '${t}'.`)}}}async _reconnect(e){const t=Date.now();let n=0,o=void 0!==e?e:new Error("Attempting to reconnect due to a unknown error."),r=this._getNextRetryDelay(n++,0,o);if(null===r)return this._logger.log(At.Debug,"Connection not reconnecting because the IRetryPolicy returned null on the first reconnect attempt."),void this._completeClose(e);if(this._connectionState=nn.Reconnecting,e?this._logger.log(At.Information,`Connection reconnecting because of error '${e}'.`):this._logger.log(At.Information,"Connection reconnecting."),0!==this._reconnectingCallbacks.length){try{this._reconnectingCallbacks.forEach((t=>t.apply(this,[e])))}catch(t){this._logger.log(At.Error,`An onreconnecting callback called with error '${e}' threw error '${t}'.`)}if(this._connectionState!==nn.Reconnecting)return void this._logger.log(At.Debug,"Connection left the reconnecting state in onreconnecting callback. Done reconnecting.")}for(;null!==r;){if(this._logger.log(At.Information,`Reconnect attempt number ${n} will start in ${r} ms.`),await new Promise((e=>{this._reconnectDelayHandle=setTimeout(e,r)})),this._reconnectDelayHandle=void 0,this._connectionState!==nn.Reconnecting)return void this._logger.log(At.Debug,"Connection left the reconnecting state during reconnect delay. Done reconnecting.");try{if(await this._startInternal(),this._connectionState=nn.Connected,this._logger.log(At.Information,"HubConnection reconnected successfully."),0!==this._reconnectedCallbacks.length)try{this._reconnectedCallbacks.forEach((e=>e.apply(this,[this.connection.connectionId])))}catch(e){this._logger.log(At.Error,`An onreconnected callback called with connectionId '${this.connection.connectionId}; threw error '${e}'.`)}return}catch(e){if(this._logger.log(At.Information,`Reconnect attempt failed because of error '${e}'.`),this._connectionState!==nn.Reconnecting)return this._logger.log(At.Debug,`Connection moved to the '${this._connectionState}' from the reconnecting state during reconnect attempt. Done reconnecting.`),void(this._connectionState===nn.Disconnecting&&this._completeClose());o=e instanceof Error?e:new Error(e.toString()),r=this._getNextRetryDelay(n++,Date.now()-t,o)}}this._logger.log(At.Information,`Reconnect retries have been exhausted after ${Date.now()-t} ms and ${n} failed attempts. Connection disconnecting.`),this._completeClose()}_getNextRetryDelay(e,t,n){try{return this._reconnectPolicy.nextRetryDelayInMilliseconds({elapsedMilliseconds:t,previousRetryCount:e,retryReason:n})}catch(n){return this._logger.log(At.Error,`IRetryPolicy.nextRetryDelayInMilliseconds(${e}, ${t}) threw error '${n}'.`),null}}_cancelCallbacksWithError(e){const t=this._callbacks;this._callbacks={},Object.keys(t).forEach((n=>{const o=t[n];try{o(null,e)}catch(t){this._logger.log(At.Error,`Stream 'error' callback called with '${e}' threw error: ${zt(t)}`)}}))}_cleanupPingTimer(){this._pingServerHandle&&(clearTimeout(this._pingServerHandle),this._pingServerHandle=void 0)}_cleanupTimeout(){this._timeoutHandle&&clearTimeout(this._timeoutHandle)}_createInvocation(e,t,n,o){if(n)return 0!==o.length?{arguments:t,streamIds:o,target:e,type:tn.Invocation}:{arguments:t,target:e,type:tn.Invocation};{const n=this._invocationId;return this._invocationId++,0!==o.length?{arguments:t,invocationId:n.toString(),streamIds:o,target:e,type:tn.Invocation}:{arguments:t,invocationId:n.toString(),target:e,type:tn.Invocation}}}_launchStreams(e,t){if(0!==e.length){t||(t=Promise.resolve());for(const n in e)e[n].subscribe({complete:()=>{t=t.then((()=>this._sendWithProtocol(this._createCompletionMessage(n))))},error:e=>{let o;o=e instanceof Error?e.message:e&&e.toString?e.toString():"Unknown error",t=t.then((()=>this._sendWithProtocol(this._createCompletionMessage(n,o))))},next:e=>{t=t.then((()=>this._sendWithProtocol(this._createStreamItemMessage(n,e))))}})}}_replaceStreamingParams(e){const t=[],n=[];for(let o=0;o<e.length;o++){const r=e[o];if(this._isObservable(r)){const i=this._invocationId;this._invocationId++,t[i]=r,n.push(i.toString()),e.splice(o,1)}}return[t,n]}_isObservable(e){return e&&e.subscribe&&"function"==typeof e.subscribe}_createStreamInvocation(e,t,n){const o=this._invocationId;return this._invocationId++,0!==n.length?{arguments:t,invocationId:o.toString(),streamIds:n,target:e,type:tn.StreamInvocation}:{arguments:t,invocationId:o.toString(),target:e,type:tn.StreamInvocation}}_createCancelInvocation(e){return{invocationId:e,type:tn.CancelInvocation}}_createStreamItemMessage(e,t){return{invocationId:e,item:t,type:tn.StreamItem}}_createCompletionMessage(e,t,n){return t?{error:t,invocationId:e,type:tn.Completion}:{invocationId:e,result:n,type:tn.Completion}}_createCloseMessage(){return{type:tn.Close}}}const cn=[0,2e3,1e4,3e4,null];class ln{constructor(e){this._retryDelays=void 0!==e?[...e,null]:cn}nextRetryDelayInMilliseconds(e){return this._retryDelays[e.previousRetryCount]}}class hn{}hn.Authorization="Authorization",hn.Cookie="Cookie";class dn{constructor(e,t,n){this.statusCode=e,this.statusText=t,this.content=n}}class un{get(e,t){return this.send({...t,method:"GET",url:e})}post(e,t){return this.send({...t,method:"POST",url:e})}delete(e,t){return this.send({...t,method:"DELETE",url:e})}getCookieString(e){return""}}class pn extends un{constructor(e,t){super(),this._innerClient=e,this._accessTokenFactory=t}async send(e){let t=!0;this._accessTokenFactory&&(!this._accessToken||e.url&&e.url.indexOf("/negotiate?")>0)&&(t=!1,this._accessToken=await this._accessTokenFactory()),this._setAuthorizationHeader(e);const n=await this._innerClient.send(e);return t&&401===n.statusCode&&this._accessTokenFactory?(this._accessToken=await this._accessTokenFactory(),this._setAuthorizationHeader(e),await this._innerClient.send(e)):n}_setAuthorizationHeader(e){e.headers||(e.headers={}),this._accessToken?e.headers[hn.Authorization]=`Bearer ${this._accessToken}`:this._accessTokenFactory&&e.headers[hn.Authorization]&&delete e.headers[hn.Authorization]}getCookieString(e){return this._innerClient.getCookieString(e)}}class fn extends un{constructor(e){super(),this._logger=e;const t={_fetchType:void 0,_jar:void 0};var o;o=t,"undefined"==typeof fetch&&(o._jar=new(n(628).CookieJar),"undefined"==typeof fetch?o._fetchType=n(200):o._fetchType=fetch,o._fetchType=n(203)(o._fetchType,o._jar),1)?(this._fetchType=t._fetchType,this._jar=t._jar):this._fetchType=fetch.bind(function(){if("undefined"!=typeof globalThis)return globalThis;if("undefined"!=typeof self)return self;if("undefined"!=typeof window)return window;if(void 0!==n.g)return n.g;throw new Error("could not find global")}()),this._abortControllerType=AbortController;const r={_abortControllerType:this._abortControllerType};(function(e){return"undefined"==typeof AbortController&&(e._abortControllerType=n(778),!0)})(r)&&(this._abortControllerType=r._abortControllerType)}async send(e){if(e.abortSignal&&e.abortSignal.aborted)throw new Xt;if(!e.method)throw new Error("No method defined.");if(!e.url)throw new Error("No url defined.");const t=new this._abortControllerType;let n;e.abortSignal&&(e.abortSignal.onabort=()=>{t.abort(),n=new Xt});let o,r=null;if(e.timeout){const o=e.timeout;r=setTimeout((()=>{t.abort(),this._logger.log(At.Warning,"Timeout from HTTP request."),n=new Vt}),o)}""===e.content&&(e.content=void 0),e.content&&(e.headers=e.headers||{},Bt(e.content)?e.headers["Content-Type"]="application/octet-stream":e.headers["Content-Type"]="text/plain;charset=UTF-8");try{o=await this._fetchType(e.url,{body:e.content,cache:"no-cache",credentials:!0===e.withCredentials?"include":"same-origin",headers:{"X-Requested-With":"XMLHttpRequest",...e.headers},method:e.method,mode:"cors",redirect:"follow",signal:t.signal})}catch(e){if(n)throw n;throw this._logger.log(At.Warning,`Error from HTTP request. ${e}.`),e}finally{r&&clearTimeout(r),e.abortSignal&&(e.abortSignal.onabort=null)}if(!o.ok){const e=await gn(o,"text");throw new Kt(e||o.statusText,o.status)}const i=gn(o,e.responseType),s=await i;return new dn(o.status,o.statusText,s)}getCookieString(e){return""}}function gn(e,t){let n;switch(t){case"arraybuffer":n=e.arrayBuffer();break;case"text":default:n=e.text();break;case"blob":case"document":case"json":throw new Error(`${t} is not supported.`)}return n}class mn extends un{constructor(e){super(),this._logger=e}send(e){return e.abortSignal&&e.abortSignal.aborted?Promise.reject(new Xt):e.method?e.url?new Promise(((t,n)=>{const o=new XMLHttpRequest;o.open(e.method,e.url,!0),o.withCredentials=void 0===e.withCredentials||e.withCredentials,o.setRequestHeader("X-Requested-With","XMLHttpRequest"),""===e.content&&(e.content=void 0),e.content&&(Bt(e.content)?o.setRequestHeader("Content-Type","application/octet-stream"):o.setRequestHeader("Content-Type","text/plain;charset=UTF-8"));const r=e.headers;r&&Object.keys(r).forEach((e=>{o.setRequestHeader(e,r[e])})),e.responseType&&(o.responseType=e.responseType),e.abortSignal&&(e.abortSignal.onabort=()=>{o.abort(),n(new Xt)}),e.timeout&&(o.timeout=e.timeout),o.onload=()=>{e.abortSignal&&(e.abortSignal.onabort=null),o.status>=200&&o.status<300?t(new dn(o.status,o.statusText,o.response||o.responseText)):n(new Kt(o.response||o.responseText||o.statusText,o.status))},o.onerror=()=>{this._logger.log(At.Warning,`Error from HTTP request. ${o.status}: ${o.statusText}.`),n(new Kt(o.statusText,o.status))},o.ontimeout=()=>{this._logger.log(At.Warning,"Timeout from HTTP request."),n(new Vt)},o.send(e.content)})):Promise.reject(new Error("No url defined.")):Promise.reject(new Error("No method defined."))}}class yn extends un{constructor(e){if(super(),"undefined"!=typeof fetch)this._httpClient=new fn(e);else{if("undefined"==typeof XMLHttpRequest)throw new Error("No usable HttpClient found.");this._httpClient=new mn(e)}}send(e){return e.abortSignal&&e.abortSignal.aborted?Promise.reject(new Xt):e.method?e.url?this._httpClient.send(e):Promise.reject(new Error("No url defined.")):Promise.reject(new Error("No method defined."))}getCookieString(e){return this._httpClient.getCookieString(e)}}var vn,wn;!function(e){e[e.None=0]="None",e[e.WebSockets=1]="WebSockets",e[e.ServerSentEvents=2]="ServerSentEvents",e[e.LongPolling=4]="LongPolling"}(vn||(vn={})),function(e){e[e.Text=1]="Text",e[e.Binary=2]="Binary"}(wn||(wn={}));class bn{constructor(){this._isAborted=!1,this.onabort=null}abort(){this._isAborted||(this._isAborted=!0,this.onabort&&this.onabort())}get signal(){return this}get aborted(){return this._isAborted}}class _n{get pollAborted(){return this._pollAbort.aborted}constructor(e,t,n){this._httpClient=e,this._logger=t,this._pollAbort=new bn,this._options=n,this._running=!1,this.onreceive=null,this.onclose=null}async connect(e,t){if(Mt.isRequired(e,"url"),Mt.isRequired(t,"transferFormat"),Mt.isIn(t,wn,"transferFormat"),this._url=e,this._logger.log(At.Trace,"(LongPolling transport) Connecting."),t===wn.Binary&&"undefined"!=typeof XMLHttpRequest&&"string"!=typeof(new XMLHttpRequest).responseType)throw new Error("Binary protocols over XmlHttpRequest not implementing advanced features are not supported.");const[n,o]=Ht(),r={[n]:o,...this._options.headers},i={abortSignal:this._pollAbort.signal,headers:r,timeout:1e5,withCredentials:this._options.withCredentials};t===wn.Binary&&(i.responseType="arraybuffer");const s=`${e}&_=${Date.now()}`;this._logger.log(At.Trace,`(LongPolling transport) polling: ${s}.`);const a=await this._httpClient.get(s,i);200!==a.statusCode?(this._logger.log(At.Error,`(LongPolling transport) Unexpected response code: ${a.statusCode}.`),this._closeError=new Kt(a.statusText||"",a.statusCode),this._running=!1):this._running=!0,this._receiving=this._poll(this._url,i)}async _poll(e,t){try{for(;this._running;)try{const n=`${e}&_=${Date.now()}`;this._logger.log(At.Trace,`(LongPolling transport) polling: ${n}.`);const o=await this._httpClient.get(n,t);204===o.statusCode?(this._logger.log(At.Information,"(LongPolling transport) Poll terminated by server."),this._running=!1):200!==o.statusCode?(this._logger.log(At.Error,`(LongPolling transport) Unexpected response code: ${o.statusCode}.`),this._closeError=new Kt(o.statusText||"",o.statusCode),this._running=!1):o.content?(this._logger.log(At.Trace,`(LongPolling transport) data received. ${Lt(o.content,this._options.logMessageContent)}.`),this.onreceive&&this.onreceive(o.content)):this._logger.log(At.Trace,"(LongPolling transport) Poll timed out, reissuing.")}catch(e){this._running?e instanceof Vt?this._logger.log(At.Trace,"(LongPolling transport) Poll timed out, reissuing."):(this._closeError=e,this._running=!1):this._logger.log(At.Trace,`(LongPolling transport) Poll errored after shutdown: ${e.message}`)}}finally{this._logger.log(At.Trace,"(LongPolling transport) Polling complete."),this.pollAborted||this._raiseOnClose()}}async send(e){return this._running?Ft(this._logger,"LongPolling",this._httpClient,this._url,e,this._options):Promise.reject(new Error("Cannot send until the transport is connected"))}async stop(){this._logger.log(At.Trace,"(LongPolling transport) Stopping polling."),this._running=!1,this._pollAbort.abort();try{await this._receiving,this._logger.log(At.Trace,`(LongPolling transport) sending DELETE request to ${this._url}.`);const e={},[t,n]=Ht();e[t]=n;const o={headers:{...e,...this._options.headers},timeout:this._options.timeout,withCredentials:this._options.withCredentials};let r;try{await this._httpClient.delete(this._url,o)}catch(e){r=e}r?r instanceof Kt&&(404===r.statusCode?this._logger.log(At.Trace,"(LongPolling transport) A 404 response was returned from sending a DELETE request."):this._logger.log(At.Trace,`(LongPolling transport) Error sending a DELETE request: ${r}`)):this._logger.log(At.Trace,"(LongPolling transport) DELETE request accepted.")}finally{this._logger.log(At.Trace,"(LongPolling transport) Stop finished."),this._raiseOnClose()}}_raiseOnClose(){if(this.onclose){let e="(LongPolling transport) Firing onclose event.";this._closeError&&(e+=" Error: "+this._closeError),this._logger.log(At.Trace,e),this.onclose(this._closeError)}}}class Sn{constructor(e,t,n,o){this._httpClient=e,this._accessToken=t,this._logger=n,this._options=o,this.onreceive=null,this.onclose=null}async connect(e,t){return Mt.isRequired(e,"url"),Mt.isRequired(t,"transferFormat"),Mt.isIn(t,wn,"transferFormat"),this._logger.log(At.Trace,"(SSE transport) Connecting."),this._url=e,this._accessToken&&(e+=(e.indexOf("?")<0?"?":"&")+`access_token=${encodeURIComponent(this._accessToken)}`),new Promise(((n,o)=>{let r,i=!1;if(t===wn.Text){if(Ut.isBrowser||Ut.isWebWorker)r=new this._options.EventSource(e,{withCredentials:this._options.withCredentials});else{const t=this._httpClient.getCookieString(e),n={};n.Cookie=t;const[o,i]=Ht();n[o]=i,r=new this._options.EventSource(e,{withCredentials:this._options.withCredentials,headers:{...n,...this._options.headers}})}try{r.onmessage=e=>{if(this.onreceive)try{this._logger.log(At.Trace,`(SSE transport) data received. ${Lt(e.data,this._options.logMessageContent)}.`),this.onreceive(e.data)}catch(e){return void this._close(e)}},r.onerror=e=>{i?this._close():o(new Error("EventSource failed to connect. The connection could not be found on the server, either the connection ID is not present on the server, or a proxy is refusing/buffering the connection. If you have multiple servers check that sticky sessions are enabled."))},r.onopen=()=>{this._logger.log(At.Information,`SSE connected to ${this._url}`),this._eventSource=r,i=!0,n()}}catch(e){return void o(e)}}else o(new Error("The Server-Sent Events transport only supports the 'Text' transfer format"))}))}async send(e){return this._eventSource?Ft(this._logger,"SSE",this._httpClient,this._url,e,this._options):Promise.reject(new Error("Cannot send until the transport is connected"))}stop(){return this._close(),Promise.resolve()}_close(e){this._eventSource&&(this._eventSource.close(),this._eventSource=void 0,this.onclose&&this.onclose(e))}}class En{constructor(e,t,n,o,r,i){this._logger=n,this._accessTokenFactory=t,this._logMessageContent=o,this._webSocketConstructor=r,this._httpClient=e,this.onreceive=null,this.onclose=null,this._headers=i}async connect(e,t){let n;return Mt.isRequired(e,"url"),Mt.isRequired(t,"transferFormat"),Mt.isIn(t,wn,"transferFormat"),this._logger.log(At.Trace,"(WebSockets transport) Connecting."),this._accessTokenFactory&&(n=await this._accessTokenFactory()),new Promise(((o,r)=>{let i;e=e.replace(/^http/,"ws");const s=this._httpClient.getCookieString(e);let a=!1;if(Ut.isReactNative){const t={},[o,r]=Ht();t[o]=r,n&&(t[hn.Authorization]=`Bearer ${n}`),s&&(t[hn.Cookie]=s),i=new this._webSocketConstructor(e,void 0,{headers:{...t,...this._headers}})}else n&&(e+=(e.indexOf("?")<0?"?":"&")+`access_token=${encodeURIComponent(n)}`);i||(i=new this._webSocketConstructor(e)),t===wn.Binary&&(i.binaryType="arraybuffer"),i.onopen=t=>{this._logger.log(At.Information,`WebSocket connected to ${e}.`),this._webSocket=i,a=!0,o()},i.onerror=e=>{let t=null;t="undefined"!=typeof ErrorEvent&&e instanceof ErrorEvent?e.error:"There was an error with the transport",this._logger.log(At.Information,`(WebSockets transport) ${t}.`)},i.onmessage=e=>{if(this._logger.log(At.Trace,`(WebSockets transport) data received. ${Lt(e.data,this._logMessageContent)}.`),this.onreceive)try{this.onreceive(e.data)}catch(e){return void this._close(e)}},i.onclose=e=>{if(a)this._close(e);else{let t=null;t="undefined"!=typeof ErrorEvent&&e instanceof ErrorEvent?e.error:"WebSocket failed to connect. The connection could not be found on the server, either the endpoint may not be a SignalR endpoint, the connection ID is not present on the server, or there is a proxy blocking WebSockets. If you have multiple servers check that sticky sessions are enabled.",r(new Error(t))}}}))}send(e){return this._webSocket&&this._webSocket.readyState===this._webSocketConstructor.OPEN?(this._logger.log(At.Trace,`(WebSockets transport) sending data. ${Lt(e,this._logMessageContent)}.`),this._webSocket.send(e),Promise.resolve()):Promise.reject("WebSocket is not in the OPEN state")}stop(){return this._webSocket&&this._close(void 0),Promise.resolve()}_close(e){this._webSocket&&(this._webSocket.onclose=()=>{},this._webSocket.onmessage=()=>{},this._webSocket.onerror=()=>{},this._webSocket.close(),this._webSocket=void 0),this._logger.log(At.Trace,"(WebSockets transport) socket closed."),this.onclose&&(!this._isCloseEvent(e)||!1!==e.wasClean&&1e3===e.code?e instanceof Error?this.onclose(e):this.onclose():this.onclose(new Error(`WebSocket closed with status code: ${e.code} (${e.reason||"no reason given"}).`)))}_isCloseEvent(e){return e&&"boolean"==typeof e.wasClean&&"number"==typeof e.code}}class Cn{constructor(e,t={}){if(this._stopPromiseResolver=()=>{},this.features={},this._negotiateVersion=1,Mt.isRequired(e,"url"),this._logger=function(e){return void 0===e?new $t(At.Information):null===e?Nt.instance:void 0!==e.log?e:new $t(e)}(t.logger),this.baseUrl=this._resolveUrl(e),(t=t||{}).logMessageContent=void 0!==t.logMessageContent&&t.logMessageContent,"boolean"!=typeof t.withCredentials&&void 0!==t.withCredentials)throw new Error("withCredentials option was not a 'boolean' or 'undefined' value");t.withCredentials=void 0===t.withCredentials||t.withCredentials,t.timeout=void 0===t.timeout?1e5:t.timeout,"undefined"==typeof WebSocket||t.WebSocket||(t.WebSocket=WebSocket),"undefined"==typeof EventSource||t.EventSource||(t.EventSource=EventSource),this._httpClient=new pn(t.httpClient||new yn(this._logger),t.accessTokenFactory),this._connectionState="Disconnected",this._connectionStarted=!1,this._options=t,this.onreceive=null,this.onclose=null}async start(e){if(e=e||wn.Binary,Mt.isIn(e,wn,"transferFormat"),this._logger.log(At.Debug,`Starting connection with transfer format '${wn[e]}'.`),"Disconnected"!==this._connectionState)return Promise.reject(new Error("Cannot start an HttpConnection that is not in the 'Disconnected' state."));if(this._connectionState="Connecting",this._startInternalPromise=this._startInternal(e),await this._startInternalPromise,"Disconnecting"===this._connectionState){const e="Failed to start the HttpConnection before stop() was called.";return this._logger.log(At.Error,e),await this._stopPromise,Promise.reject(new Xt(e))}if("Connected"!==this._connectionState){const e="HttpConnection.startInternal completed gracefully but didn't enter the connection into the connected state!";return this._logger.log(At.Error,e),Promise.reject(new Xt(e))}this._connectionStarted=!0}send(e){return"Connected"!==this._connectionState?Promise.reject(new Error("Cannot send data if the connection is not in the 'Connected' State.")):(this._sendQueue||(this._sendQueue=new In(this.transport)),this._sendQueue.send(e))}async stop(e){return"Disconnected"===this._connectionState?(this._logger.log(At.Debug,`Call to HttpConnection.stop(${e}) ignored because the connection is already in the disconnected state.`),Promise.resolve()):"Disconnecting"===this._connectionState?(this._logger.log(At.Debug,`Call to HttpConnection.stop(${e}) ignored because the connection is already in the disconnecting state.`),this._stopPromise):(this._connectionState="Disconnecting",this._stopPromise=new Promise((e=>{this._stopPromiseResolver=e})),await this._stopInternal(e),void await this._stopPromise)}async _stopInternal(e){this._stopError=e;try{await this._startInternalPromise}catch(e){}if(this.transport){try{await this.transport.stop()}catch(e){this._logger.log(At.Error,`HttpConnection.transport.stop() threw error '${e}'.`),this._stopConnection()}this.transport=void 0}else this._logger.log(At.Debug,"HttpConnection.transport is undefined in HttpConnection.stop() because start() failed.")}async _startInternal(e){let t=this.baseUrl;this._accessTokenFactory=this._options.accessTokenFactory,this._httpClient._accessTokenFactory=this._accessTokenFactory;try{if(this._options.skipNegotiation){if(this._options.transport!==vn.WebSockets)throw new Error("Negotiation can only be skipped when using the WebSocket transport directly.");this.transport=this._constructTransport(vn.WebSockets),await this._startTransport(t,e)}else{let n=null,o=0;do{if(n=await this._getNegotiationResponse(t),"Disconnecting"===this._connectionState||"Disconnected"===this._connectionState)throw new Xt("The connection was stopped during negotiation.");if(n.error)throw new Error(n.error);if(n.ProtocolVersion)throw new Error("Detected a connection attempt to an ASP.NET SignalR Server. This client only supports connecting to an ASP.NET Core SignalR Server. See https://aka.ms/signalr-core-differences for details.");if(n.url&&(t=n.url),n.accessToken){const e=n.accessToken;this._accessTokenFactory=()=>e,this._httpClient._accessToken=e,this._httpClient._accessTokenFactory=void 0}o++}while(n.url&&o<100);if(100===o&&n.url)throw new Error("Negotiate redirection limit exceeded.");await this._createTransport(t,this._options.transport,n,e)}this.transport instanceof _n&&(this.features.inherentKeepAlive=!0),"Connecting"===this._connectionState&&(this._logger.log(At.Debug,"The HttpConnection connected successfully."),this._connectionState="Connected")}catch(e){return this._logger.log(At.Error,"Failed to start the connection: "+e),this._connectionState="Disconnected",this.transport=void 0,this._stopPromiseResolver(),Promise.reject(e)}}async _getNegotiationResponse(e){const t={},[n,o]=Ht();t[n]=o;const r=this._resolveNegotiateUrl(e);this._logger.log(At.Debug,`Sending negotiation request: ${r}.`);try{const e=await this._httpClient.post(r,{content:"",headers:{...t,...this._options.headers},timeout:this._options.timeout,withCredentials:this._options.withCredentials});if(200!==e.statusCode)return Promise.reject(new Error(`Unexpected status code returned from negotiate '${e.statusCode}'`));const n=JSON.parse(e.content);return(!n.negotiateVersion||n.negotiateVersion<1)&&(n.connectionToken=n.connectionId),n.useAck&&!0!==this._options._useStatefulReconnect?Promise.reject(new Zt("Client didn't negotiate Stateful Reconnect but the server did.")):n}catch(e){let t="Failed to complete negotiation with the server: "+e;return e instanceof Kt&&404===e.statusCode&&(t+=" Either this is not a SignalR endpoint or there is a proxy blocking the connection."),this._logger.log(At.Error,t),Promise.reject(new Zt(t))}}_createConnectUrl(e,t){return t?e+(-1===e.indexOf("?")?"?":"&")+`id=${t}`:e}async _createTransport(e,t,n,o){let r=this._createConnectUrl(e,n.connectionToken);if(this._isITransport(t))return this._logger.log(At.Debug,"Connection was provided an instance of ITransport, using that directly."),this.transport=t,await this._startTransport(r,o),void(this.connectionId=n.connectionId);const i=[],s=n.availableTransports||[];let a=n;for(const n of s){const s=this._resolveTransportOrError(n,t,o,!0===(null==a?void 0:a.useAck));if(s instanceof Error)i.push(`${n.transport} failed:`),i.push(s);else if(this._isITransport(s)){if(this.transport=s,!a){try{a=await this._getNegotiationResponse(e)}catch(e){return Promise.reject(e)}r=this._createConnectUrl(e,a.connectionToken)}try{return await this._startTransport(r,o),void(this.connectionId=a.connectionId)}catch(e){if(this._logger.log(At.Error,`Failed to start the transport '${n.transport}': ${e}`),a=void 0,i.push(new Qt(`${n.transport} failed: ${e}`,vn[n.transport])),"Connecting"!==this._connectionState){const e="Failed to select transport before stop() was called.";return this._logger.log(At.Debug,e),Promise.reject(new Xt(e))}}}}return i.length>0?Promise.reject(new en(`Unable to connect to the server with any of the available transports. ${i.join(" ")}`,i)):Promise.reject(new Error("None of the transports supported by the client are supported by the server."))}_constructTransport(e){switch(e){case vn.WebSockets:if(!this._options.WebSocket)throw new Error("'WebSocket' is not supported in your environment.");return new En(this._httpClient,this._accessTokenFactory,this._logger,this._options.logMessageContent,this._options.WebSocket,this._options.headers||{});case vn.ServerSentEvents:if(!this._options.EventSource)throw new Error("'EventSource' is not supported in your environment.");return new Sn(this._httpClient,this._httpClient._accessToken,this._logger,this._options);case vn.LongPolling:return new _n(this._httpClient,this._logger,this._options);default:throw new Error(`Unknown transport: ${e}.`)}}_startTransport(e,t){return this.transport.onreceive=this.onreceive,this.features.reconnect?this.transport.onclose=async n=>{let o=!1;if(this.features.resend){try{this.features.disconnected(),await this.transport.connect(e,t),await this.features.resend()}catch{o=!0}o&&this._stopConnection(n)}else this._stopConnection(n)}:this.transport.onclose=e=>this._stopConnection(e),this.transport.connect(e,t)}_resolveTransportOrError(e,t,n,o){const r=vn[e.transport];if(null==r)return this._logger.log(At.Debug,`Skipping transport '${e.transport}' because it is not supported by this client.`),new Error(`Skipping transport '${e.transport}' because it is not supported by this client.`);if(!function(e,t){return!e||0!=(t&e)}(t,r))return this._logger.log(At.Debug,`Skipping transport '${vn[r]}' because it was disabled by the client.`),new Yt(`'${vn[r]}' is disabled by the client.`,r);if(!(e.transferFormats.map((e=>wn[e])).indexOf(n)>=0))return this._logger.log(At.Debug,`Skipping transport '${vn[r]}' because it does not support the requested transfer format '${wn[n]}'.`),new Error(`'${vn[r]}' does not support ${wn[n]}.`);if(r===vn.WebSockets&&!this._options.WebSocket||r===vn.ServerSentEvents&&!this._options.EventSource)return this._logger.log(At.Debug,`Skipping transport '${vn[r]}' because it is not supported in your environment.'`),new Gt(`'${vn[r]}' is not supported in your environment.`,r);this._logger.log(At.Debug,`Selecting transport '${vn[r]}'.`);try{return this.features.reconnect=r===vn.WebSockets?o:void 0,this._constructTransport(r)}catch(e){return e}}_isITransport(e){return e&&"object"==typeof e&&"connect"in e}_stopConnection(e){if(this._logger.log(At.Debug,`HttpConnection.stopConnection(${e}) called while in state ${this._connectionState}.`),this.transport=void 0,e=this._stopError||e,this._stopError=void 0,"Disconnected"!==this._connectionState){if("Connecting"===this._connectionState)throw this._logger.log(At.Warning,`Call to HttpConnection.stopConnection(${e}) was ignored because the connection is still in the connecting state.`),new Error(`HttpConnection.stopConnection(${e}) was called while the connection is still in the connecting state.`);if("Disconnecting"===this._connectionState&&this._stopPromiseResolver(),e?this._logger.log(At.Error,`Connection disconnected with error '${e}'.`):this._logger.log(At.Information,"Connection disconnected."),this._sendQueue&&(this._sendQueue.stop().catch((e=>{this._logger.log(At.Error,`TransportSendQueue.stop() threw error '${e}'.`)})),this._sendQueue=void 0),this.connectionId=void 0,this._connectionState="Disconnected",this._connectionStarted){this._connectionStarted=!1;try{this.onclose&&this.onclose(e)}catch(t){this._logger.log(At.Error,`HttpConnection.onclose(${e}) threw error '${t}'.`)}}}else this._logger.log(At.Debug,`Call to HttpConnection.stopConnection(${e}) was ignored because the connection is already in the disconnected state.`)}_resolveUrl(e){if(0===e.lastIndexOf("https://",0)||0===e.lastIndexOf("http://",0))return e;if(!Ut.isBrowser)throw new Error(`Cannot resolve '${e}'.`);const t=window.document.createElement("a");return t.href=e,this._logger.log(At.Information,`Normalizing '${e}' to '${t.href}'.`),t.href}_resolveNegotiateUrl(e){const t=new URL(e);t.pathname.endsWith("/")?t.pathname+="negotiate":t.pathname+="/negotiate";const n=new URLSearchParams(t.searchParams);return n.has("negotiateVersion")||n.append("negotiateVersion",this._negotiateVersion.toString()),n.has("useAck")?"true"===n.get("useAck")&&(this._options._useStatefulReconnect=!0):!0===this._options._useStatefulReconnect&&n.append("useAck","true"),t.search=n.toString(),t.toString()}}class In{constructor(e){this._transport=e,this._buffer=[],this._executing=!0,this._sendBufferedData=new kn,this._transportResult=new kn,this._sendLoopPromise=this._sendLoop()}send(e){return this._bufferData(e),this._transportResult||(this._transportResult=new kn),this._transportResult.promise}stop(){return this._executing=!1,this._sendBufferedData.resolve(),this._sendLoopPromise}_bufferData(e){if(this._buffer.length&&typeof this._buffer[0]!=typeof e)throw new Error(`Expected data to be of type ${typeof this._buffer} but was of type ${typeof e}`);this._buffer.push(e),this._sendBufferedData.resolve()}async _sendLoop(){for(;;){if(await this._sendBufferedData.promise,!this._executing){this._transportResult&&this._transportResult.reject("Connection stopped.");break}this._sendBufferedData=new kn;const e=this._transportResult;this._transportResult=void 0;const t="string"==typeof this._buffer[0]?this._buffer.join(""):In._concatBuffers(this._buffer);this._buffer.length=0;try{await this._transport.send(t),e.resolve()}catch(t){e.reject(t)}}}static _concatBuffers(e){const t=e.map((e=>e.byteLength)).reduce(((e,t)=>e+t)),n=new Uint8Array(t);let o=0;for(const t of e)n.set(new Uint8Array(t),o),o+=t.byteLength;return n.buffer}}class kn{constructor(){this.promise=new Promise(((e,t)=>[this._resolver,this._rejecter]=[e,t]))}resolve(){this._resolver()}reject(e){this._rejecter(e)}}class Tn{constructor(){this.name="json",this.version=1,this.transferFormat=wn.Text}parseMessages(e,t){if("string"!=typeof e)throw new Error("Invalid input for JSON hub protocol. Expected a string.");if(!e)return[];null===t&&(t=Nt.instance);const n=xt.parse(e),o=[];for(const e of n){const n=JSON.parse(e);if("number"!=typeof n.type)throw new Error("Invalid payload.");switch(n.type){case tn.Invocation:this._isInvocationMessage(n);break;case tn.StreamItem:this._isStreamItemMessage(n);break;case tn.Completion:this._isCompletionMessage(n);break;case tn.Ping:case tn.Close:break;case tn.Ack:this._isAckMessage(n);break;case tn.Sequence:this._isSequenceMessage(n);break;default:t.log(At.Information,"Unknown message type '"+n.type+"' ignored.");continue}o.push(n)}return o}writeMessage(e){return xt.write(JSON.stringify(e))}_isInvocationMessage(e){this._assertNotEmptyString(e.target,"Invalid payload for Invocation message."),void 0!==e.invocationId&&this._assertNotEmptyString(e.invocationId,"Invalid payload for Invocation message.")}_isStreamItemMessage(e){if(this._assertNotEmptyString(e.invocationId,"Invalid payload for StreamItem message."),void 0===e.item)throw new Error("Invalid payload for StreamItem message.")}_isCompletionMessage(e){if(e.result&&e.error)throw new Error("Invalid payload for Completion message.");!e.result&&e.error&&this._assertNotEmptyString(e.error,"Invalid payload for Completion message."),this._assertNotEmptyString(e.invocationId,"Invalid payload for Completion message.")}_isAckMessage(e){if("number"!=typeof e.sequenceId)throw new Error("Invalid SequenceId for Ack message.")}_isSequenceMessage(e){if("number"!=typeof e.sequenceId)throw new Error("Invalid SequenceId for Sequence message.")}_assertNotEmptyString(e,t){if("string"!=typeof e||""===e)throw new Error(t)}}const Dn={trace:At.Trace,debug:At.Debug,info:At.Information,information:At.Information,warn:At.Warning,warning:At.Warning,error:At.Error,critical:At.Critical,none:At.None};class Rn{configureLogging(e){if(Mt.isRequired(e,"logging"),function(e){return void 0!==e.log}(e))this.logger=e;else if("string"==typeof e){const t=function(e){const t=Dn[e.toLowerCase()];if(void 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t=e.length;this.ensureBufferSizeToWrite(t),this.bytes.set(e,this.pos),this.pos+=t},e.prototype.writeI8=function(e){this.ensureBufferSizeToWrite(1),this.view.setInt8(this.pos,e),this.pos++},e.prototype.writeU16=function(e){this.ensureBufferSizeToWrite(2),this.view.setUint16(this.pos,e),this.pos+=2},e.prototype.writeI16=function(e){this.ensureBufferSizeToWrite(2),this.view.setInt16(this.pos,e),this.pos+=2},e.prototype.writeU32=function(e){this.ensureBufferSizeToWrite(4),this.view.setUint32(this.pos,e),this.pos+=4},e.prototype.writeI32=function(e){this.ensureBufferSizeToWrite(4),this.view.setInt32(this.pos,e),this.pos+=4},e.prototype.writeF32=function(e){this.ensureBufferSizeToWrite(4),this.view.setFloat32(this.pos,e),this.pos+=4},e.prototype.writeF64=function(e){this.ensureBufferSizeToWrite(8),this.view.setFloat64(this.pos,e),this.pos+=8},e.prototype.writeU64=function(e){this.ensureBufferSizeToWrite(8),function(e,t,n){var o=n/4294967296,r=n;e.setUint32(t,o),e.setUint32(t+4,r)}(this.view,this.pos,e),this.pos+=8},e.prototype.writeI64=function(e){this.ensureBufferSizeToWrite(8),Un(this.view,this.pos,e),this.pos+=8},e}();function Zn(e){return"".concat(e<0?"-":"","0x").concat(Math.abs(e).toString(16).padStart(2,"0"))}var eo=function(){function e(e,t){void 0===e&&(e=16),void 0===t&&(t=16),this.maxKeyLength=e,this.maxLengthPerKey=t,this.hit=0,this.miss=0,this.caches=[];for(var n=0;n<this.maxKeyLength;n++)this.caches.push([])}return e.prototype.canBeCached=function(e){return e>0&&e<=this.maxKeyLength},e.prototype.find=function(e,t,n){e:for(var o=0,r=this.caches[n-1];o<r.length;o++){for(var i=r[o],s=i.bytes,a=0;a<n;a++)if(s[a]!==e[t+a])continue e;return i.str}return null},e.prototype.store=function(e,t){var n=this.caches[e.length-1],o={bytes:e,str:t};n.length>=this.maxLengthPerKey?n[Math.random()*n.length|0]=o:n.push(o)},e.prototype.decode=function(e,t,n){var o=this.find(e,t,n);if(null!=o)return 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3:return[2]}}))},e.prototype.decodeAsync=function(e){var t,n,o,r,i,s,a;return i=this,void 0,a=function(){var i,s,a,c,l,h,d,u;return to(this,(function(p){switch(p.label){case 0:i=!1,p.label=1;case 1:p.trys.push([1,6,7,12]),t=no(e),p.label=2;case 2:return[4,t.next()];case 3:if((n=p.sent()).done)return[3,5];if(a=n.value,i)throw this.createExtraByteError(this.totalPos);this.appendBuffer(a);try{s=this.doDecodeSync(),i=!0}catch(e){if(!(e instanceof so))throw e}this.totalPos+=this.pos,p.label=4;case 4:return[3,2];case 5:return[3,12];case 6:return c=p.sent(),o={error:c},[3,12];case 7:return p.trys.push([7,,10,11]),n&&!n.done&&(r=t.return)?[4,r.call(t)]:[3,9];case 8:p.sent(),p.label=9;case 9:return[3,11];case 10:if(o)throw o.error;return[7];case 11:return[7];case 12:if(i){if(this.hasRemaining(1))throw this.createExtraByteError(this.totalPos);return[2,s]}throw h=(l=this).headByte,d=l.pos,u=l.totalPos,new RangeError("Insufficient data in parsing ".concat(Zn(h)," at ").concat(u," (").concat(d," in 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u(e,t){e(t),a.shift(),a.length&&l(a[0][0],a[0][1])}}(this,arguments)},e.prototype.doDecodeSync=function(){e:for(;;){var e=this.readHeadByte(),t=void 0;if(e>=224)t=e-256;else if(e<192)if(e<128)t=e;else if(e<144){if(0!=(o=e-128)){this.pushMapState(o),this.complete();continue e}t={}}else if(e<160){if(0!=(o=e-144)){this.pushArrayState(o),this.complete();continue e}t=[]}else{var n=e-160;t=this.decodeUtf8String(n,0)}else if(192===e)t=null;else if(194===e)t=!1;else if(195===e)t=!0;else if(202===e)t=this.readF32();else if(203===e)t=this.readF64();else if(204===e)t=this.readU8();else if(205===e)t=this.readU16();else if(206===e)t=this.readU32();else if(207===e)t=this.readU64();else if(208===e)t=this.readI8();else if(209===e)t=this.readI16();else if(210===e)t=this.readI32();else if(211===e)t=this.readI64();else if(217===e)n=this.lookU8(),t=this.decodeUtf8String(n,1);else if(218===e)n=this.lookU16(),t=this.decodeUtf8String(n,2);else if(219===e)n=this.lookU32(),t=this.decodeUtf8String(n,4);else if(220===e){if(0!==(o=this.readU16())){this.pushArrayState(o),this.complete();continue e}t=[]}else if(221===e){if(0!==(o=this.readU32())){this.pushArrayState(o),this.complete();continue e}t=[]}else if(222===e){if(0!==(o=this.readU16())){this.pushMapState(o),this.complete();continue e}t={}}else if(223===e){if(0!==(o=this.readU32())){this.pushMapState(o),this.complete();continue e}t={}}else if(196===e){var o=this.lookU8();t=this.decodeBinary(o,1)}else if(197===e)o=this.lookU16(),t=this.decodeBinary(o,2);else if(198===e)o=this.lookU32(),t=this.decodeBinary(o,4);else if(212===e)t=this.decodeExtension(1,0);else if(213===e)t=this.decodeExtension(2,0);else if(214===e)t=this.decodeExtension(4,0);else if(215===e)t=this.decodeExtension(8,0);else if(216===e)t=this.decodeExtension(16,0);else if(199===e)o=this.lookU8(),t=this.decodeExtension(o,1);else if(200===e)o=this.lookU16(),t=this.decodeExtension(o,2);else{if(201!==e)throw new Vn("Unrecognized type byte: ".concat(Zn(e)));o=this.lookU32(),t=this.decodeExtension(o,4)}this.complete();for(var r=this.stack;r.length>0;){var i=r[r.length-1];if(0===i.type){if(i.array[i.position]=t,i.position++,i.position!==i.size)continue e;r.pop(),t=i.array}else{if(1===i.type){if("string"!=(s=typeof t)&&"number"!==s)throw new Vn("The type of key must be string or number but "+typeof t);if("__proto__"===t)throw new Vn("The key __proto__ is not allowed");i.key=t,i.type=2;continue e}if(i.map[i.key]=t,i.readCount++,i.readCount!==i.size){i.key=null,i.type=1;continue e}r.pop(),t=i.map}}return t}var s},e.prototype.readHeadByte=function(){return-1===this.headByte&&(this.headByte=this.readU8()),this.headByte},e.prototype.complete=function(){this.headByte=-1},e.prototype.readArraySize=function(){var e=this.readHeadByte();switch(e){case 220:return this.readU16();case 221:return this.readU32();default:if(e<160)return e-144;throw new Vn("Unrecognized array type byte: ".concat(Zn(e)))}},e.prototype.pushMapState=function(e){if(e>this.maxMapLength)throw new Vn("Max length exceeded: map length (".concat(e,") > maxMapLengthLength (").concat(this.maxMapLength,")"));this.stack.push({type:1,size:e,key:null,readCount:0,map:{}})},e.prototype.pushArrayState=function(e){if(e>this.maxArrayLength)throw new Vn("Max length exceeded: array length (".concat(e,") > maxArrayLength (").concat(this.maxArrayLength,")"));this.stack.push({type:0,size:e,array:new Array(e),position:0})},e.prototype.decodeUtf8String=function(e,t){var n;if(e>this.maxStrLength)throw new Vn("Max length exceeded: UTF-8 byte length (".concat(e,") > maxStrLength (").concat(this.maxStrLength,")"));if(this.bytes.byteLength<this.pos+t+e)throw ao;var o,r=this.pos+t;return o=this.stateIsMapKey()&&(null===(n=this.keyDecoder)||void 0===n?void 0:n.canBeCached(e))?this.keyDecoder.decode(this.bytes,r,e):e>zn?function(e,t,n){var o=e.subarray(t,t+n);return qn.decode(o)}(this.bytes,r,e):jn(this.bytes,r,e),this.pos+=t+e,o},e.prototype.stateIsMapKey=function(){return this.stack.length>0&&1===this.stack[this.stack.length-1].type},e.prototype.decodeBinary=function(e,t){if(e>this.maxBinLength)throw new Vn("Max length exceeded: bin length (".concat(e,") > maxBinLength (").concat(this.maxBinLength,")"));if(!this.hasRemaining(e+t))throw ao;var n=this.pos+t,o=this.bytes.subarray(n,n+e);return this.pos+=t+e,o},e.prototype.decodeExtension=function(e,t){if(e>this.maxExtLength)throw new Vn("Max length exceeded: ext length (".concat(e,") > maxExtLength (").concat(this.maxExtLength,")"));var n=this.view.getInt8(this.pos+t),o=this.decodeBinary(e,t+1);return this.extensionCodec.decode(o,n,this.context)},e.prototype.lookU8=function(){return this.view.getUint8(this.pos)},e.prototype.lookU16=function(){return this.view.getUint16(this.pos)},e.prototype.lookU32=function(){return this.view.getUint32(this.pos)},e.prototype.readU8=function(){var e=this.view.getUint8(this.pos);return this.pos++,e},e.prototype.readI8=function(){var e=this.view.getInt8(this.pos);return this.pos++,e},e.prototype.readU16=function(){var e=this.view.getUint16(this.pos);return this.pos+=2,e},e.prototype.readI16=function(){var e=this.view.getInt16(this.pos);return this.pos+=2,e},e.prototype.readU32=function(){var e=this.view.getUint32(this.pos);return this.pos+=4,e},e.prototype.readI32=function(){var e=this.view.getInt32(this.pos);return this.pos+=4,e},e.prototype.readU64=function(){var e,t,n=(e=this.view,t=this.pos,4294967296*e.getUint32(t)+e.getUint32(t+4));return this.pos+=8,n},e.prototype.readI64=function(){var e=Ln(this.view,this.pos);return this.pos+=8,e},e.prototype.readF32=function(){var e=this.view.getFloat32(this.pos);return this.pos+=4,e},e.prototype.readF64=function(){var e=this.view.getFloat64(this.pos);return this.pos+=8,e},e}();class ho{static write(e){let t=e.byteLength||e.length;const n=[];do{let e=127&t;t>>=7,t>0&&(e|=128),n.push(e)}while(t>0);t=e.byteLength||e.length;const o=new Uint8Array(n.length+t);return o.set(n,0),o.set(e,n.length),o.buffer}static parse(e){const t=[],n=new Uint8Array(e),o=[0,7,14,21,28];for(let r=0;r<e.byteLength;){let i,s=0,a=0;do{i=n[r+s],a|=(127&i)<<o[s],s++}while(s<Math.min(5,e.byteLength-r)&&0!=(128&i));if(0!=(128&i)&&s<5)throw new Error("Cannot read message size.");if(5===s&&i>7)throw new Error("Messages bigger than 2GB are not supported.");if(!(n.byteLength>=r+s+a))throw new Error("Incomplete message.");t.push(n.slice?n.slice(r+s,r+s+a):n.subarray(r+s,r+s+a)),r=r+s+a}return t}}const uo=new Uint8Array([145,tn.Ping]);class po{constructor(e){this.name="messagepack",this.version=1,this.transferFormat=wn.Binary,this._errorResult=1,this._voidResult=2,this._nonVoidResult=3,e=e||{},this._encoder=new Qn(e.extensionCodec,e.context,e.maxDepth,e.initialBufferSize,e.sortKeys,e.forceFloat32,e.ignoreUndefined,e.forceIntegerToFloat),this._decoder=new lo(e.extensionCodec,e.context,e.maxStrLength,e.maxBinLength,e.maxArrayLength,e.maxMapLength,e.maxExtLength)}parseMessages(e,t){if(!(n=e)||"undefined"==typeof ArrayBuffer||!(n instanceof ArrayBuffer||n.constructor&&"ArrayBuffer"===n.constructor.name))throw new Error("Invalid input for MessagePack hub protocol. Expected an ArrayBuffer.");var n;null===t&&(t=Nt.instance);const o=ho.parse(e),r=[];for(const e of o){const n=this._parseMessage(e,t);n&&r.push(n)}return r}writeMessage(e){switch(e.type){case tn.Invocation:return this._writeInvocation(e);case tn.StreamInvocation:return this._writeStreamInvocation(e);case tn.StreamItem:return this._writeStreamItem(e);case tn.Completion:return this._writeCompletion(e);case tn.Ping:return ho.write(uo);case tn.CancelInvocation:return this._writeCancelInvocation(e);case tn.Close:return this._writeClose();case tn.Ack:return this._writeAck(e);case tn.Sequence:return this._writeSequence(e);default:throw new Error("Invalid message type.")}}_parseMessage(e,t){if(0===e.length)throw new Error("Invalid payload.");const n=this._decoder.decode(e);if(0===n.length||!(n instanceof Array))throw new Error("Invalid payload.");const o=n[0];switch(o){case tn.Invocation:return this._createInvocationMessage(this._readHeaders(n),n);case tn.StreamItem:return this._createStreamItemMessage(this._readHeaders(n),n);case tn.Completion:return this._createCompletionMessage(this._readHeaders(n),n);case tn.Ping:return this._createPingMessage(n);case tn.Close:return this._createCloseMessage(n);case tn.Ack:return this._createAckMessage(n);case tn.Sequence:return this._createSequenceMessage(n);default:return t.log(At.Information,"Unknown message type '"+o+"' ignored."),null}}_createCloseMessage(e){if(e.length<2)throw new Error("Invalid payload for Close message.");return{allowReconnect:e.length>=3?e[2]:void 0,error:e[1],type:tn.Close}}_createPingMessage(e){if(e.length<1)throw new Error("Invalid payload for Ping message.");return{type:tn.Ping}}_createInvocationMessage(e,t){if(t.length<5)throw new Error("Invalid payload for Invocation message.");const n=t[2];return n?{arguments:t[4],headers:e,invocationId:n,streamIds:[],target:t[3],type:tn.Invocation}:{arguments:t[4],headers:e,streamIds:[],target:t[3],type:tn.Invocation}}_createStreamItemMessage(e,t){if(t.length<4)throw new Error("Invalid payload for StreamItem message.");return{headers:e,invocationId:t[2],item:t[3],type:tn.StreamItem}}_createCompletionMessage(e,t){if(t.length<4)throw new Error("Invalid payload for Completion message.");const n=t[3];if(n!==this._voidResult&&t.length<5)throw new Error("Invalid payload for Completion message.");let o,r;switch(n){case this._errorResult:o=t[4];break;case this._nonVoidResult:r=t[4]}return{error:o,headers:e,invocationId:t[2],result:r,type:tn.Completion}}_createAckMessage(e){if(e.length<1)throw new Error("Invalid payload for Ack message.");return{sequenceId:e[1],type:tn.Ack}}_createSequenceMessage(e){if(e.length<1)throw new Error("Invalid payload for Sequence message.");return{sequenceId:e[1],type:tn.Sequence}}_writeInvocation(e){let t;return t=e.streamIds?this._encoder.encode([tn.Invocation,e.headers||{},e.invocationId||null,e.target,e.arguments,e.streamIds]):this._encoder.encode([tn.Invocation,e.headers||{},e.invocationId||null,e.target,e.arguments]),ho.write(t.slice())}_writeStreamInvocation(e){let t;return t=e.streamIds?this._encoder.encode([tn.StreamInvocation,e.headers||{},e.invocationId,e.target,e.arguments,e.streamIds]):this._encoder.encode([tn.StreamInvocation,e.headers||{},e.invocationId,e.target,e.arguments]),ho.write(t.slice())}_writeStreamItem(e){const t=this._encoder.encode([tn.StreamItem,e.headers||{},e.invocationId,e.item]);return ho.write(t.slice())}_writeCompletion(e){const t=e.error?this._errorResult:void 0!==e.result?this._nonVoidResult:this._voidResult;let n;switch(t){case this._errorResult:n=this._encoder.encode([tn.Completion,e.headers||{},e.invocationId,t,e.error]);break;case this._voidResult:n=this._encoder.encode([tn.Completion,e.headers||{},e.invocationId,t]);break;case this._nonVoidResult:n=this._encoder.encode([tn.Completion,e.headers||{},e.invocationId,t,e.result])}return ho.write(n.slice())}_writeCancelInvocation(e){const t=this._encoder.encode([tn.CancelInvocation,e.headers||{},e.invocationId]);return ho.write(t.slice())}_writeClose(){const e=this._encoder.encode([tn.Close,null]);return ho.write(e.slice())}_writeAck(e){const t=this._encoder.encode([tn.Ack,e.sequenceId]);return ho.write(t.slice())}_writeSequence(e){const t=this._encoder.encode([tn.Sequence,e.sequenceId]);return ho.write(t.slice())}_readHeaders(e){const t=e[1];if("object"!=typeof t)throw new Error("Invalid headers.");return t}}const fo="function"==typeof TextDecoder?new TextDecoder("utf-8"):null,go=fo?fo.decode.bind(fo):function(e){let t=0;const n=e.length,o=[],r=[];for(;t<n;){const n=e[t++];if(0===n)break;if(0==(128&n))o.push(n);else if(192==(224&n)){const r=63&e[t++];o.push((31&n)<<6|r)}else if(224==(240&n)){const r=63&e[t++],i=63&e[t++];o.push((31&n)<<12|r<<6|i)}else if(240==(248&n)){let r=(7&n)<<18|(63&e[t++])<<12|(63&e[t++])<<6|63&e[t++];r>65535&&(r-=65536,o.push(r>>>10&1023|55296),r=56320|1023&r),o.push(r)}o.length>1024&&(r.push(String.fromCharCode.apply(null,o)),o.length=0)}return r.push(String.fromCharCode.apply(null,o)),r.join("")},mo=Math.pow(2,32),yo=Math.pow(2,21)-1;function vo(e,t){return e[t]|e[t+1]<<8|e[t+2]<<16|e[t+3]<<24}function wo(e,t){return e[t]+(e[t+1]<<8)+(e[t+2]<<16)+(e[t+3]<<24>>>0)}function bo(e,t){const n=wo(e,t+4);if(n>yo)throw new Error(`Cannot read uint64 with high order part ${n}, because the result would exceed Number.MAX_SAFE_INTEGER.`);return n*mo+wo(e,t)}class _o{constructor(e){this.batchData=e;const t=new Io(e);this.arrayRangeReader=new ko(e),this.arrayBuilderSegmentReader=new To(e),this.diffReader=new So(e),this.editReader=new Eo(e,t),this.frameReader=new Co(e,t)}updatedComponents(){return vo(this.batchData,this.batchData.length-20)}referenceFrames(){return vo(this.batchData,this.batchData.length-16)}disposedComponentIds(){return vo(this.batchData,this.batchData.length-12)}disposedEventHandlerIds(){return vo(this.batchData,this.batchData.length-8)}updatedComponentsEntry(e,t){const n=e+4*t;return vo(this.batchData,n)}referenceFramesEntry(e,t){return e+20*t}disposedComponentIdsEntry(e,t){const n=e+4*t;return vo(this.batchData,n)}disposedEventHandlerIdsEntry(e,t){const n=e+8*t;return bo(this.batchData,n)}}class So{constructor(e){this.batchDataUint8=e}componentId(e){return vo(this.batchDataUint8,e)}edits(e){return e+4}editsEntry(e,t){return e+16*t}}class Eo{constructor(e,t){this.batchDataUint8=e,this.stringReader=t}editType(e){return vo(this.batchDataUint8,e)}siblingIndex(e){return vo(this.batchDataUint8,e+4)}newTreeIndex(e){return vo(this.batchDataUint8,e+8)}moveToSiblingIndex(e){return vo(this.batchDataUint8,e+8)}removedAttributeName(e){const t=vo(this.batchDataUint8,e+12);return this.stringReader.readString(t)}}class Co{constructor(e,t){this.batchDataUint8=e,this.stringReader=t}frameType(e){return vo(this.batchDataUint8,e)}subtreeLength(e){return vo(this.batchDataUint8,e+4)}elementReferenceCaptureId(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}componentId(e){return vo(this.batchDataUint8,e+8)}elementName(e){const t=vo(this.batchDataUint8,e+8);return this.stringReader.readString(t)}textContent(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}markupContent(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}attributeName(e){const t=vo(this.batchDataUint8,e+4);return this.stringReader.readString(t)}attributeValue(e){const t=vo(this.batchDataUint8,e+8);return this.stringReader.readString(t)}attributeEventHandlerId(e){return bo(this.batchDataUint8,e+12)}}class Io{constructor(e){this.batchDataUint8=e,this.stringTableStartIndex=vo(e,e.length-4)}readString(e){if(-1===e)return null;{const n=vo(this.batchDataUint8,this.stringTableStartIndex+4*e),o=function(e,t){let n=0,o=0;for(let r=0;r<4;r++){const i=e[t+r];if(n|=(127&i)<<o,i<128)break;o+=7}return n}(this.batchDataUint8,n),r=n+((t=o)<128?1:t<16384?2:t<2097152?3:4),i=new Uint8Array(this.batchDataUint8.buffer,this.batchDataUint8.byteOffset+r,o);return go(i)}var t}}class ko{constructor(e){this.batchDataUint8=e}count(e){return vo(this.batchDataUint8,e)}values(e){return e+4}}class To{constructor(e){this.batchDataUint8=e}offset(e){return 0}count(e){return vo(this.batchDataUint8,e)}values(e){return e+4}}class Do{constructor(e){this.nextBatchId=2,this.logger=e}async processBatch(e,t,n){if(e<this.nextBatchId)return await this.completeBatch(n,e),void this.logger.log(ft.Debug,`Batch ${e} already processed. Waiting for batch ${this.nextBatchId}.`);if(e>this.nextBatchId)return this.fatalError?(this.logger.log(ft.Debug,`Received a new batch ${e} but errored out on a previous batch ${this.nextBatchId-1}`),void await n.send("OnRenderCompleted",this.nextBatchId-1,this.fatalError.toString())):void this.logger.log(ft.Debug,`Waiting for batch ${this.nextBatchId}. Batch ${e} not processed.`);try{this.nextBatchId++,this.logger.log(ft.Debug,`Applying batch ${e}.`),Ce(xn.Server,new _o(t)),await this.completeBatch(n,e)}catch(t){throw this.fatalError=t.toString(),this.logger.log(ft.Error,`There was an error applying batch ${e}.`),n.send("OnRenderCompleted",e,t.toString()),t}}getLastBatchid(){return this.nextBatchId-1}async completeBatch(e,t){try{await e.send("OnRenderCompleted",t,null)}catch{this.logger.log(ft.Warning,`Failed to deliver completion notification for render '${t}'.`)}}}let Ro=!1;function xo(){const e=document.querySelector("#blazor-error-ui");e&&(e.style.display="block"),Ro||(Ro=!0,document.querySelectorAll("#blazor-error-ui .reload").forEach((e=>{e.onclick=function(e){location.reload(),e.preventDefault()}})),document.querySelectorAll("#blazor-error-ui .dismiss").forEach((e=>{e.onclick=function(e){const t=document.querySelector("#blazor-error-ui");t&&(t.style.display="none"),e.preventDefault()}})))}class Ao{constructor(t,n,o,r){this._renderingFailed=!1,this._disposed=!1,this._circuitId=void 0,this._applicationState=n,this._componentManager=t,this._options=o,this._logger=r,this._renderQueue=new Do(this._logger),this._dispatcher=e.attachDispatcher(this)}start(){if(this.isDisposedOrDisposing())throw new Error("Cannot start a disposed circuit.");return this._startPromise||(this._startPromise=this.startCore()),this._startPromise}async startCore(){if(this._connection=await this.startConnection(),this._connection.state!==nn.Connected)return!1;const e=JSON.stringify(this._componentManager.initialComponents.map((e=>Dt(e))));return this._circuitId=await this._connection.invoke("StartCircuit",We.getBaseURI(),We.getLocationHref(),e,this._applicationState||""),!!this._circuitId}async startConnection(){var e,t;const n=new po;n.name="blazorpack";const o=(new Rn).withUrl("_blazor").withHubProtocol(n);this._options.configureSignalR(o);const r=o.build();r.on("JS.AttachComponent",((e,t)=>Se(xn.Server,this.resolveElement(t,e),e,!1))),r.on("JS.BeginInvokeJS",this._dispatcher.beginInvokeJSFromDotNet.bind(this._dispatcher)),r.on("JS.EndInvokeDotNet",this._dispatcher.endInvokeDotNetFromJS.bind(this._dispatcher)),r.on("JS.ReceiveByteArray",this._dispatcher.receiveByteArray.bind(this._dispatcher)),r.on("JS.BeginTransmitStream",(e=>{const t=new ReadableStream({start:t=>{r.stream("SendDotNetStreamToJS",e).subscribe({next:e=>t.enqueue(e),complete:()=>t.close(),error:e=>t.error(e)})}});this._dispatcher.supplyDotNetStream(e,t)})),r.on("JS.RenderBatch",(async(e,t)=>{var n,o;this._logger.log(At.Debug,`Received render batch with id ${e} and ${t.byteLength} bytes.`),await this._renderQueue.processBatch(e,t,this._connection),null===(o=(n=this._componentManager).onAfterRenderBatch)||void 0===o||o.call(n,xn.Server)})),r.on("JS.EndLocationChanging",pt._internal.navigationManager.endLocationChanging),r.onclose((e=>!this._disposed&&!this._renderingFailed&&this._options.reconnectionHandler.onConnectionDown(this._options.reconnectionOptions,e))),r.on("JS.Error",(e=>{this._renderingFailed=!0,this.unhandledError(e),xo()}));try{await r.start()}catch(e){if(this.unhandledError(e),"FailedToNegotiateWithServerError"===e.errorType)throw e;xo(),e.innerErrors&&(e.innerErrors.some((e=>"UnsupportedTransportError"===e.errorType&&e.transport===vn.WebSockets))?this._logger.log(At.Error,"Unable to connect, please ensure you are using an updated browser that supports WebSockets."):e.innerErrors.some((e=>"FailedToStartTransportError"===e.errorType&&e.transport===vn.WebSockets))?this._logger.log(At.Error,"Unable to connect, please ensure WebSockets are available. A VPN or proxy may be blocking the connection."):e.innerErrors.some((e=>"DisabledTransportError"===e.errorType&&e.transport===vn.LongPolling))&&this._logger.log(At.Error,"Unable to initiate a SignalR connection to the server. This might be because the server is not configured to support WebSockets. For additional details, visit https://aka.ms/blazor-server-websockets-error."))}return(null===(t=null===(e=r.connection)||void 0===e?void 0:e.features)||void 0===t?void 0:t.inherentKeepAlive)&&this._logger.log(At.Warning,"Failed to connect via WebSockets, using the Long Polling fallback transport. This may be due to a VPN or proxy blocking the connection. To troubleshoot this, visit https://aka.ms/blazor-server-using-fallback-long-polling."),r}async disconnect(){var e;await(null===(e=this._connection)||void 0===e?void 0:e.stop())}async reconnect(){if(!this._circuitId)throw new Error("Circuit host not initialized.");return this._connection.state===nn.Connected||(this._connection=await this.startConnection(),!!await this._connection.invoke("ConnectCircuit",this._circuitId)&&(this._options.reconnectionHandler.onConnectionUp(),!0))}beginInvokeDotNetFromJS(e,t,n,o,r){this.throwIfDispatchingWhenDisposed(),this._connection.send("BeginInvokeDotNetFromJS",e?e.toString():null,t,n,o||0,r)}endInvokeJSFromDotNet(e,t,n){this.throwIfDispatchingWhenDisposed(),this._connection.send("EndInvokeJSFromDotNet",e,t,n)}sendByteArray(e,t){this.throwIfDispatchingWhenDisposed(),this._connection.send("ReceiveByteArray",e,t)}throwIfDispatchingWhenDisposed(){if(this._disposed)throw new Error("The circuit associated with this dispatcher is no longer available.")}sendLocationChanged(e,t,n){return this._connection.send("OnLocationChanged",e,t,n)}sendLocationChanging(e,t,n,o){return this._connection.send("OnLocationChanging",e,t,n,o)}sendJsDataStream(e,t,n){return function(e,t,n,o){setTimeout((async()=>{let r=5,i=(new Date).valueOf();try{const s=t instanceof Blob?t.size:t.byteLength;let a=0,c=0;for(;a<s;){const l=Math.min(o,s-a),h=await dt(t,a,l);if(r--,r>1)await e.send("ReceiveJSDataChunk",n,c,h,null);else{if(!await e.invoke("ReceiveJSDataChunk",n,c,h,null))break;const t=(new Date).valueOf(),o=t-i;i=t,r=Math.max(1,Math.round(500/Math.max(1,o)))}a+=l,c++}}catch(t){await e.send("ReceiveJSDataChunk",n,-1,null,t.toString())}}),0)}(this._connection,e,t,n)}resolveElement(e,t){const n=w(e);if(n)return H(n,!0);const o=Number.parseInt(e);if(!Number.isNaN(o))return $(this._componentManager.resolveRootComponent(o,t));throw new Error(`Invalid sequence number or identifier '${e}'.`)}getRootComponentManager(){return this._componentManager}unhandledError(e){this._logger.log(At.Error,e),this.disconnect()}getDisconnectFormData(){const e=new FormData,t=this._circuitId;return e.append("circuitId",t),e}didRenderingFail(){return this._renderingFailed}isDisposedOrDisposing(){return void 0!==this._disposePromise}sendDisconnectBeacon(){if(this._disposed)return;const e=this.getDisconnectFormData();this._disposed=navigator.sendBeacon("_blazor/disconnect",e)}dispose(){return this._disposePromise||(this._disposePromise=this.disposeCore()),this._disposePromise}async disposeCore(){var e;if(!this._startPromise)return void(this._disposed=!0);await this._startPromise,this._disposed=!0,null===(e=this._connection)||void 0===e||e.stop();const t=this.getDisconnectFormData();fetch("_blazor/disconnect",{method:"POST",body:t}),function(e){if(!E.delete(e))throw new Error(`Interop methods are not registered for renderer ${e}`)}(xn.Server)}}const No={configureSignalR:e=>{},logLevel:ft.Warning,reconnectionOptions:{maxRetries:8,retryIntervalMilliseconds:2e4,dialogId:"components-reconnect-modal"}};class Po{constructor(e,t,n,o){this.maxRetries=t,this.document=n,this.logger=o,this.addedToDom=!1,this.modal=this.document.createElement("div"),this.modal.id=e,this.maxRetries=t,this.modal.style.cssText=["position: fixed","top: 0","right: 0","bottom: 0","left: 0","z-index: 1050","display: none","overflow: hidden","background-color: #fff","opacity: 0.8","text-align: center","font-weight: bold","transition: visibility 0s linear 500ms"].join(";"),this.message=this.document.createElement("h5"),this.message.style.cssText="margin-top: 20px",this.button=this.document.createElement("button"),this.button.style.cssText="margin:5px auto 5px",this.button.textContent="Retry";const r=this.document.createElement("a");r.addEventListener("click",(()=>location.reload())),r.textContent="reload",this.reloadParagraph=this.document.createElement("p"),this.reloadParagraph.textContent="Alternatively, ",this.reloadParagraph.appendChild(r),this.modal.appendChild(this.message),this.modal.appendChild(this.button),this.modal.appendChild(this.reloadParagraph),this.loader=this.getLoader(),this.message.after(this.loader),this.button.addEventListener("click",(async()=>{this.show();try{await pt.reconnect()||this.rejected()}catch(e){this.logger.log(ft.Error,e),this.failed()}}))}show(){this.addedToDom||(this.addedToDom=!0,this.document.body.appendChild(this.modal)),this.modal.style.display="block",this.loader.style.display="inline-block",this.button.style.display="none",this.reloadParagraph.style.display="none",this.message.textContent="Attempting to reconnect to the server...",this.modal.style.visibility="hidden",setTimeout((()=>{this.modal.style.visibility="visible"}),0)}update(e){this.message.textContent=`Attempting to reconnect to the server: ${e} of ${this.maxRetries}`}hide(){this.modal.style.display="none"}failed(){this.button.style.display="block",this.reloadParagraph.style.display="none",this.loader.style.display="none";const e=this.document.createTextNode("Reconnection failed. Try "),t=this.document.createElement("a");t.textContent="reloading",t.setAttribute("href",""),t.addEventListener("click",(()=>location.reload()));const n=this.document.createTextNode(" the page if you're unable to reconnect.");this.message.replaceChildren(e,t,n)}rejected(){this.button.style.display="none",this.reloadParagraph.style.display="none",this.loader.style.display="none";const e=this.document.createTextNode("Could not reconnect to the server. "),t=this.document.createElement("a");t.textContent="Reload",t.setAttribute("href",""),t.addEventListener("click",(()=>location.reload()));const n=this.document.createTextNode(" the page to restore functionality.");this.message.replaceChildren(e,t,n)}getLoader(){const e=this.document.createElement("div");return e.style.cssText=["border: 0.3em solid #f3f3f3","border-top: 0.3em solid #3498db","border-radius: 50%","width: 2em","height: 2em","display: inline-block"].join(";"),e.animate([{transform:"rotate(0deg)"},{transform:"rotate(360deg)"}],{duration:2e3,iterations:1/0}),e}}class Mo{constructor(e,t,n){this.dialog=e,this.maxRetries=t,this.document=n,this.document=n;const o=this.document.getElementById(Mo.MaxRetriesId);o&&(o.innerText=this.maxRetries.toString())}show(){this.removeClasses(),this.dialog.classList.add(Mo.ShowClassName)}update(e){const t=this.document.getElementById(Mo.CurrentAttemptId);t&&(t.innerText=e.toString())}hide(){this.removeClasses(),this.dialog.classList.add(Mo.HideClassName)}failed(){this.removeClasses(),this.dialog.classList.add(Mo.FailedClassName)}rejected(){this.removeClasses(),this.dialog.classList.add(Mo.RejectedClassName)}removeClasses(){this.dialog.classList.remove(Mo.ShowClassName,Mo.HideClassName,Mo.FailedClassName,Mo.RejectedClassName)}}Mo.ShowClassName="components-reconnect-show",Mo.HideClassName="components-reconnect-hide",Mo.FailedClassName="components-reconnect-failed",Mo.RejectedClassName="components-reconnect-rejected",Mo.MaxRetriesId="components-reconnect-max-retries",Mo.CurrentAttemptId="components-reconnect-current-attempt";class Uo{constructor(e,t,n){this._currentReconnectionProcess=null,this._logger=e,this._reconnectionDisplay=t,this._reconnectCallback=n||pt.reconnect}onConnectionDown(e,t){if(!this._reconnectionDisplay){const 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Reason: ${e}`)}n.callEntryPoint(),r.invokeLibraryInitializers("afterStarted",[pt])}(this)}rootComponentsMayRequireRefresh(){this._isComponentRefreshPending||(this._isComponentRefreshPending=!0,setTimeout((()=>{this._isComponentRefreshPending=!1,this.refreshRootComponents(this._rootComponents)}),0))}circuitMayHaveNoRootComponents(){if(this.hasAnyExistingOrPendingServerComponents())return clearTimeout(this._circuitInactivityTimeoutId),void(this._circuitInactivityTimeoutId=void 0);void 0===this._circuitInactivityTimeoutId&&(this._circuitInactivityTimeoutId=setTimeout((()=>{this.hasAnyExistingOrPendingServerComponents()||(async function(){await(null==Oo?void 0:Oo.dispose())}(),this._circuitInactivityTimeoutId=void 0)}),this._circuitInactivityTimeoutMs))}hasAnyExistingOrPendingServerComponents(){const e=Ee(xn.Server);if(e&&e.getRootComponentCount()>0)return!0;for(const{descriptor:{type:e},assignedRendererId:t}of this._rootComponents){if(t===xn.Server)return!0;if(void 0===t&&("auto"===e||"server"===e))return!0}return!1}refreshRootComponents(e){const t=new Map;for(const n of e){const e=this.determinePendingOperation(n);if(!e)continue;const o=n.assignedRendererId;if(!o)throw new Error("Descriptors must be assigned a renderer ID before getting used as root components");let r=t.get(o);r||(r=[],t.set(o,r)),r.push(e)}for(const[e,r]of t)n=e,o=JSON.stringify(r),D(n).invokeMethodAsync("UpdateRootComponents",o);var n,o;this.circuitMayHaveNoRootComponents()}resolveRendererIdForDescriptor(e){switch("auto"===e.type?this.getAutoRenderMode():e.type){case"server":return this.startCircutIfNotStarted(),xn.Server;case"webassembly":return this.startWebAssemblyIfNotStarted(),xn.WebAssembly;case null:return null}}getAutoRenderMode(){return Nr()?"webassembly":this._didWebAssemblyFailToLoadQuickly?"server":null}determinePendingOperation(e){if(n=e.descriptor,document.contains(n.start)){if(void 0===e.assignedRendererId){if(qr||"loading"===document.readyState)return null;const n=this.resolveRendererIdForDescriptor(e.descriptor);return null===n?null:(t=n,E.has(t)?(e.assignedRendererId=n,e.uniqueIdAtLastUpdate=e.descriptor.uniqueId,this._pendingComponentsToResolve.set(e.descriptor.uniqueId,e),{type:"add",selectorId:e.descriptor.uniqueId,marker:Dt(e.descriptor)}):null)}if(e.uniqueIdAtLastUpdate===e.descriptor.uniqueId)return null;if(void 0!==e.interactiveComponentId)return e.uniqueIdAtLastUpdate=e.descriptor.uniqueId,{type:"update",componentId:e.interactiveComponentId,marker:Dt(e.descriptor)}}else if(this.unregisterComponent(e),void 0!==e.interactiveComponentId)return{type:"remove",componentId:e.interactiveComponentId};var t,n;return null}resolveRootComponent(e,t){const n=this._pendingComponentsToResolve.get(e);if(!n)throw new Error(`Could not resolve a root component for descriptor with ID '${e}'.`);if(this._pendingComponentsToResolve.delete(e),void 0!==n.interactiveComponentId)throw new Error("Cannot resolve a root component for the same descriptor multiple times.");return n.interactiveComponentId=t,this.refreshRootComponents([n]),n.descriptor}}function fi(e){var t;const n=null===(t=e.resources)||void 0===t?void 0:t.hash,o=e.mainAssemblyName;return n&&o?{key:`blazor-resource-hash:${o}`,value:n}:null}let gi,mi=!1;function yi(e){var t,n,o;if(mi)throw new Error("Blazor has already started.");return mi=!0,pt._internal.loadWebAssemblyQuicklyTimeout=3e3,pt._internal.hotReloadApplied=()=>{xe()&&Ae(location.href,!0)},qo(null==e?void 0:e.circuit),function(e){if(Ir)throw new Error("WebAssembly options have already been configured.");Ir=e}(null==e?void 0:e.webAssembly),gi=new pi(null!==(n=null===(t=null==e?void 0:e.ssr)||void 0===t?void 0:t.circuitInactivityTimeoutMs)&&void 0!==n?n:2e3),zr=gi,function(e,t){hi=t,(null==e?void 0:e.disableDomPreservation)&&(di=!1),customElements.define("blazor-ssr-end",ui)}(null==e?void 0:e.ssr,gi),(null===(o=null==e?void 0:e.ssr)||void 0===o?void 0:o.disableDomPreservation)||(Wr=gi,document.addEventListener("click",ri),document.addEventListener("submit",si),window.addEventListener("popstate",ii),Ie=oi),"loading"===document.readyState?document.addEventListener("DOMContentLoaded",vi):vi(),Promise.resolve()}function vi(){!function(e){const t=Qr(document);for(const e of t)null==zr||zr.registerComponent(e)}(),gi.documentUpdated()}pt.start=yi,window.DotNet=e,document&&document.currentScript&&"false"!==document.currentScript.getAttribute("autostart")&&yi()})()})();
\ No newline at end of file
diff --git a/src/Components/Web.JS/src/Rendering/StreamingRendering.ts b/src/Components/Web.JS/src/Rendering/StreamingRendering.ts
index 805bb764feaf..bbaa9d5d8a08 100644
--- a/src/Components/Web.JS/src/Rendering/StreamingRendering.ts
+++ b/src/Components/Web.JS/src/Rendering/StreamingRendering.ts
@@ -3,7 +3,7 @@
 
 import { SsrStartOptions } from '../Platform/SsrStartOptions';
 import { NavigationEnhancementCallbacks, performEnhancedPageLoad, replaceDocumentWithPlainText } from '../Services/NavigationEnhancement';
-import { isWithinBaseUriSpace } from '../Services/NavigationUtils';
+import { isWithinBaseUriSpace, toAbsoluteUri } from '../Services/NavigationUtils';
 import { synchronizeDomContent } from './DomMerging/DomSync';
 
 let enableDomPreservation = true;
@@ -42,12 +42,25 @@ class BlazorStreamingUpdate extends HTMLElement {
             case 'redirection':
               // We use 'replace' here because it's closest to the non-progressively-enhanced behavior, and will make the most sense
               // if the async delay was very short, as the user would not perceive having been on the intermediate page.
-              const destinationUrl = node.content.textContent!;
-              if (isWithinBaseUriSpace(destinationUrl)) {
-                history.replaceState(null, '', destinationUrl);
+              const destinationUrl = toAbsoluteUri(node.content.textContent!);
+              const isFormPost = node.getAttribute('from') === 'form-post';
+              const isEnhancedNav = node.getAttribute('enhanced') === 'true';
+              if (isEnhancedNav && isWithinBaseUriSpace(destinationUrl)) {
+                if (isFormPost) {
+                  // The URL is not yet updated. Push a whole new entry so that 'back' goes back to the pre-redirection location.
+                  history.pushState(null, '', destinationUrl);
+                } else {
+                  // The URL was already updated on the original link click. Replace so that 'back' goes to the pre-redirection location.
+                  history.replaceState(null, '', destinationUrl);
+                }
                 performEnhancedPageLoad(destinationUrl);
               } else {
-                location.replace(destinationUrl);
+                // Same reason for varying as above
+                if (isFormPost) {
+                  location.assign(destinationUrl);
+                } else {
+                  location.replace(destinationUrl);
+                }
               }
               break;
             case 'error':
diff --git a/src/Components/Web.JS/src/Services/NavigationEnhancement.ts b/src/Components/Web.JS/src/Services/NavigationEnhancement.ts
index f7f734d46b2e..bf99a37e8c23 100644
--- a/src/Components/Web.JS/src/Services/NavigationEnhancement.ts
+++ b/src/Components/Web.JS/src/Services/NavigationEnhancement.ts
@@ -73,6 +73,10 @@ function onDocumentClick(event: MouseEvent) {
     return;
   }
 
+  if (event.target instanceof HTMLAnchorElement && !enhancedNavigationIsEnabledForLink(event.target)) {
+    return;
+  }
+
   handleClickForNavigationInterception(event, absoluteInternalHref => {
     history.pushState(null, /* ignored title */ '', absoluteInternalHref);
     performEnhancedPageLoad(absoluteInternalHref);
@@ -99,6 +103,10 @@ function onDocumentSubmit(event: SubmitEvent) {
   // to make sure this handler only ever runs after interactive handlers.
   const formElem = event.target;
   if (formElem instanceof HTMLFormElement) {
+    if (!enhancedNavigationIsEnabledForForm(formElem)) {
+      return;
+    }
+
     event.preventDefault();
 
     const url = new URL(formElem.action);
@@ -131,21 +139,73 @@ export async function performEnhancedPageLoad(internalDestinationHref: string, f
   // framing boundaries to distinguish the initial document and each subsequent streaming SSR update.
   currentEnhancedNavigationAbortController = new AbortController();
   const abortSignal = currentEnhancedNavigationAbortController.signal;
-  const responsePromise = fetch(internalDestinationHref, Object.assign({
+  const responsePromise = fetch(internalDestinationHref, Object.assign(<RequestInit>{
     signal: abortSignal,
+    mode: 'no-cors', // If there's a redirection to an external origin, even if it enables CORS, we don't want to receive its content and patch it into our DOM on this origin
     headers: {
-      'blazor-enhanced-nav': 'on',
-      'accept': 'text/html',
+      // Because of no-cors, we can only send CORS-safelisted headers, so communicate the info about
+      // enhanced nav as a MIME type parameter
+      'accept': 'text/html;blazor-enhanced-nav=on',
     },
   }, fetchOptions));
   await getResponsePartsWithFraming(responsePromise, abortSignal,
     (response, initialContent) => {
+      const isGetRequest = !fetchOptions?.method || fetchOptions.method === 'get';
+      const isSuccessResponse = response.status >= 200 && response.status < 300;
+
+      // For true 301/302/etc redirections to external URLs, we'll receive an opaque response
+      // (even if it has CORS enabled, since we passed no-cors), and the browser won't disclose
+      // the target URL to JS code. We must therefore retry as a non-enhanced-nav page load to reach
+      // the destination. This also has the benefit that we can be certain not to introduce content
+      // from an external origin into the DOM here.
+      if (response.type === 'opaque') {
+        if (isGetRequest) {
+          retryEnhancedNavAsFullPageLoad(internalDestinationHref);
+          return;
+        } else {
+          throw new Error('Enhanced navigation does not support making a non-GET request to an endpoint that redirects to an external origin. Avoid enabling enhanced navigation for form posts that may perform external redirections.');
+        }
+      }
+
+      if (isSuccessResponse && response.headers.get('blazor-enhanced-nav') !== 'allow') {
+        // This appears to be a non-Blazor-Endpoint success response. We don't want to use enhanced nav
+        // because the content we receive is not designed to be patched into an existing frame,
+        // and may be incompatible with the Blazor JS that's already here.
+        // The reason we don't apply the same logic for non-success responses is that:
+        //  - We don't want to retry as then developers will get double-failures in logs
+        //  - We really want to show error pages to avoid losing vital debugging info
+        // ... and since error pages can be considered terminally fatal, we don't have to worry about
+        // whether the page has complex client-side behaviors that are incompatible with our JS.
+        if (isGetRequest) {
+          retryEnhancedNavAsFullPageLoad(internalDestinationHref);
+          return;
+        } else {
+          throw new Error('Enhanced navigation does not support making a non-GET request to a non-Blazor endpoint. Avoid enabling enhanced navigation for forms that post to a non-Blazor endpoint.');
+        }
+      }
+
+      // For 301/302/etc redirections to internal URLs, the browser will already have followed the chain of redirections
+      // to the end, and given us the final content. We do still need to update the current URL to match the final location,
+      // then let the rest of enhanced nav logic run to patch the new content into the DOM.
       if (response.redirected) {
-        // We already followed a redirection, so update the current URL to match the redirected destination, just like for normal navigation redirections
-        history.replaceState(null, '', response.url);
+        if (isGetRequest) {
+          // For gets, the intermediate (redirecting) URL is already in the address bar, so we have to use 'replace'
+          // so that 'back' would go to the page before the redirection
+          history.replaceState(null, '', response.url);
+        } else {
+          // For non-gets, we're still on the source page, so need to append a whole new history entry
+          history.pushState(null, '', response.url);
+        }
         internalDestinationHref = response.url;
       }
 
+      // For enhanced nav redirecting to an external URL, we'll get a special Blazor-specific redirection command
+      const externalRedirectionUrl = response.headers.get('blazor-enhanced-nav-redirect-location');
+      if (externalRedirectionUrl) {
+        location.replace(externalRedirectionUrl);
+        return;
+      }
+
       const responseContentType = response.headers.get('content-type');
       if (responseContentType?.startsWith('text/html') && initialContent) {
         // For HTML responses, regardless of the status code, display it
@@ -156,19 +216,16 @@ export async function performEnhancedPageLoad(internalDestinationHref: string, f
         // For any other text-based content, we'll just display it, because that's what
         // would happen if this was a non-enhanced request.
         replaceDocumentWithPlainText(initialContent);
-      } else if ((response.status < 200 || response.status >= 300) && !initialContent) {
+      } else if (!isSuccessResponse && !initialContent) {
         // For any non-success response that has no content at all, make up our own error UI
         replaceDocumentWithPlainText(`Error: ${response.status} ${response.statusText}`);
       } else {
         // For any other response, it's not HTML and we don't know what to do. It might be plain text,
         // or an image, or something else.
-        if (!fetchOptions?.method || fetchOptions.method === 'get') {
+        if (isGetRequest) {
           // If it's a get request, we'll trust that it's idempotent and cheap enough to request
           // a second time, so we can fall back on a full reload.
-          // The ? trick here is the same workaround as described in #10839, and without it, the user
-          // would not be able to use the back button afterwards.
-          history.replaceState(null, '', internalDestinationHref + '?');
-          location.replace(internalDestinationHref);
+          retryEnhancedNavAsFullPageLoad(internalDestinationHref);
         } else {
           // For non-get requests, we can't safely re-request, so just treat it as an error
           replaceDocumentWithPlainText(`Error: ${fetchOptions.method} request to ${internalDestinationHref} returned non-HTML content of type ${responseContentType || 'unspecified'}.`);
@@ -203,12 +260,6 @@ async function getResponsePartsWithFraming(responsePromise: Promise<Response>, a
   try {
     response = await responsePromise;
 
-    const externalRedirectionUrl = response.headers.get('blazor-enhanced-nav-redirect-location');
-    if (externalRedirectionUrl) {
-      location.replace(externalRedirectionUrl);
-      return;
-    }
-
     if (!response.body) { // Not sure how this can happen, but the TypeScript annotations suggest it can
       onInitialDocument(response, '');
       return;
@@ -278,3 +329,28 @@ function splitStream(frameBoundaryMarker: string) {
     }
   });
 }
+
+function enhancedNavigationIsEnabledForLink(element: HTMLAnchorElement): boolean {
+  // For links, they default to being enhanced, but you can override at any ancestor level (both positively and negatively)
+  const closestOverride = element.closest('[data-enhance-nav]');
+  if (closestOverride) {
+    const attributeValue = closestOverride.getAttribute('data-enhance-nav')!;
+    return attributeValue === '' || attributeValue.toLowerCase() === 'true';
+  } else {
+    return true;
+  }
+}
+
+function enhancedNavigationIsEnabledForForm(form: HTMLFormElement): boolean {
+  // For forms, they default *not* to being enhanced, and must be enabled explicitly on the form element itself (not an ancestor).
+  const attributeValue = form.getAttribute('data-enhance');
+  return typeof(attributeValue) === 'string'
+    && attributeValue === '' || attributeValue?.toLowerCase() === 'true';
+}
+
+function retryEnhancedNavAsFullPageLoad(internalDestinationHref: string) {
+  // The ? trick here is the same workaround as described in #10839, and without it, the user
+  // would not be able to use the back button afterwards.
+  history.replaceState(null, '', internalDestinationHref + '?');
+  location.replace(internalDestinationHref);
+}
diff --git a/src/Components/Web/src/Forms/EditForm.cs b/src/Components/Web/src/Forms/EditForm.cs
index 990a2d39b9d2..f59ba91e074c 100644
--- a/src/Components/Web/src/Forms/EditForm.cs
+++ b/src/Components/Web/src/Forms/EditForm.cs
@@ -46,6 +46,15 @@ public EditContext? EditContext
         }
     }
 
+    /// <summary>
+    /// If enabled, form submission is performed without fully reloading the page. This is
+    /// equivalent to adding <code>data-enhance</code> to the form.
+    ///
+    /// This flag is only relevant in server-side rendering (SSR) scenarios. For interactive
+    /// rendering, the flag has no effect since there is no full-page reload on submit anyway.
+    /// </summary>
+    [Parameter] public bool Enhance { get; set; }
+
     /// <summary>
     /// Specifies the top-level model object for the form. An edit context will
     /// be constructed for this model. If using this parameter, do not also supply
@@ -135,8 +144,13 @@ protected override void BuildRenderTree(RenderTreeBuilder builder)
             builder.AddAttribute(2, "method", "post");
         }
 
-        builder.AddMultipleAttributes(3, AdditionalAttributes);
-        builder.AddAttribute(4, "onsubmit", _handleSubmitDelegate);
+        if (Enhance)
+        {
+            builder.AddAttribute(3, "data-enhance", "");
+        }
+
+        builder.AddMultipleAttributes(4, AdditionalAttributes);
+        builder.AddAttribute(5, "onsubmit", _handleSubmitDelegate);
 
         // In SSR cases, we register onsubmit as a named event and emit other child elements
         // to include the handler and antiforgery token in the post data
@@ -147,10 +161,10 @@ protected override void BuildRenderTree(RenderTreeBuilder builder)
                 builder.AddNamedEvent("onsubmit", FormName);
             }
 
-            RenderSSRFormHandlingChildren(builder, 5);
+            RenderSSRFormHandlingChildren(builder, 6);
         }
 
-        builder.OpenComponent<CascadingValue<EditContext>>(6);
+        builder.OpenComponent<CascadingValue<EditContext>>(7);
         builder.AddComponentParameter(7, "IsFixed", true);
         builder.AddComponentParameter(8, "Value", _editContext);
         builder.AddComponentParameter(9, "ChildContent", ChildContent?.Invoke(_editContext));
diff --git a/src/Components/Web/src/PublicAPI.Unshipped.txt b/src/Components/Web/src/PublicAPI.Unshipped.txt
index 1a6b400c1f1f..b23d101f56fb 100644
--- a/src/Components/Web/src/PublicAPI.Unshipped.txt
+++ b/src/Components/Web/src/PublicAPI.Unshipped.txt
@@ -9,6 +9,8 @@ Microsoft.AspNetCore.Components.Forms.AntiforgeryStateProvider
 Microsoft.AspNetCore.Components.Forms.AntiforgeryStateProvider.AntiforgeryStateProvider() -> void
 Microsoft.AspNetCore.Components.Forms.AntiforgeryToken
 Microsoft.AspNetCore.Components.Forms.AntiforgeryToken.AntiforgeryToken() -> void
+Microsoft.AspNetCore.Components.Forms.EditForm.Enhance.get -> bool
+Microsoft.AspNetCore.Components.Forms.EditForm.Enhance.set -> void
 Microsoft.AspNetCore.Components.Forms.Editor<T>
 Microsoft.AspNetCore.Components.Forms.Editor<T>.Editor() -> void
 Microsoft.AspNetCore.Components.Forms.Editor<T>.NameFor(System.Linq.Expressions.LambdaExpression! expression) -> string!
diff --git a/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTest.cs b/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTest.cs
index 6db920f41fa5..48aa13714a7f 100644
--- a/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTest.cs
+++ b/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTest.cs
@@ -8,7 +8,7 @@
 using Xunit.Abstractions;
 using Components.TestServer.RazorComponents;
 using OpenQA.Selenium;
-using System.Globalization;
+using OpenQA.Selenium.Support.Extensions;
 
 namespace Microsoft.AspNetCore.Components.E2ETests.ServerRenderingTests;
 
@@ -79,88 +79,54 @@ public void EnhancedNavRequestsIncludeExpectedHeaders()
         var ul = Browser.Exists(By.Id("all-headers"));
         var allHeaders = ul.FindElements(By.TagName("li")).Select(x => x.Text.ToLowerInvariant()).ToList();
 
-        // The server can trigger arbitrary behavior based on this
-        Assert.Contains("blazor-enhanced-nav: on", allHeaders);
-
-        // This is to make the enhanced nav outcomes more similar to non-enhanced nav.
-        // For example, the default error middleware will only serve the error page if
-        // this header is included.
-        Assert.Contains("accept: text/html", allHeaders);
+        // Specifying text/html is to make the enhanced nav outcomes more similar to non-enhanced nav.
+        // For example, the default error middleware will only serve the error page if this content type is requested.
+        // The blazor-enhanced-nav parameter can be used to trigger arbitrary server-side behaviors.
+        Assert.Contains("accept: text/html;blazor-enhanced-nav=on", allHeaders);
     }
 
     [Fact]
-    public void ScrollsToHashWithContentAddedAsynchronously()
+    public void EnhancedNavCanBeDisabledHierarchically()
     {
         Navigate($"{ServerPathBase}/nav");
-        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Scroll to hash")).Click();
-        Assert.Equal(0, BrowserScrollY);
 
-        var asyncContentHeader = Browser.Exists(By.Id("some-content"));
-        Browser.Equal("Some content", () => asyncContentHeader.Text);
-        Browser.True(() => BrowserScrollY > 500);
-    }
+        var originalH1Elem = Browser.Exists(By.TagName("h1"));
+        Browser.Equal("Hello", () => originalH1Elem.Text);
 
-    [Fact]
-    public void CanFollowSynchronousRedirection()
-    {
-        Navigate($"{ServerPathBase}/nav");
+        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Other (no enhanced nav)")).Click();
 
-        var h1Elem = Browser.Exists(By.TagName("h1"));
-        Browser.Equal("Hello", () => h1Elem.Text);
+        // Check we got there, but we did *not* retain the <h1> element
+        Browser.Equal("Other", () => Browser.Exists(By.TagName("h1")).Text);
+        Assert.Throws<StaleElementReferenceException>(() => originalH1Elem.Text);
 
-        // Click a link and show we redirected, preserving elements, and updating the URL
-        // Note that in this specific case we can't preserve the hash part of the URL, as it
-        // gets lost when the browser follows a 'fetch' redirection. If we decide it's important
-        // to support this later, we'd have to change the server not to do a real redirection
-        // here and instead use the same protocol it uses for external redirections.
-        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Redirect")).Click();
-        Browser.Equal("Scroll to hash", () => h1Elem.Text);
-        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
-
-        // See that 'back' takes you to the place from before the redirection
-        Browser.Navigate().Back();
-        Browser.Equal("Hello", () => h1Elem.Text);
-        Assert.EndsWith("/subdir/nav", Browser.Url);
     }
 
     [Fact]
-    public void CanFollowAsynchronousRedirectionWhileStreaming()
+    public void EnhancedNavCanBeReenabledHierarchically()
     {
         Navigate($"{ServerPathBase}/nav");
 
-        var h1Elem = Browser.Exists(By.TagName("h1"));
-        Browser.Equal("Hello", () => h1Elem.Text);
+        var originalH1Elem = Browser.Exists(By.TagName("h1"));
+        Browser.Equal("Hello", () => originalH1Elem.Text);
 
-        // Click a link and show we redirected, preserving elements, scrolling to hash, and updating the URL
-        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Redirect while streaming")).Click();
-        Browser.Equal("Scroll to hash", () => h1Elem.Text);
-        Browser.True(() => BrowserScrollY > 500);
-        Assert.EndsWith("/subdir/nav/scroll-to-hash#some-content", Browser.Url);
+        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Other (re-enabled enhanced nav)")).Click();
 
-        // See that 'back' takes you to the place from before the redirection
-        Browser.Navigate().Back();
-        Browser.Equal("Hello", () => h1Elem.Text);
-        Assert.EndsWith("/subdir/nav", Browser.Url);
-    }
-
-    [Fact]
-    public void CanFollowSynchronousExternalRedirection()
-    {
-        Navigate($"{ServerPathBase}/nav");
-        Browser.Equal("Hello", () => Browser.Exists(By.TagName("h1")).Text);
+        // Check we got there, and it did retain the <h1> element
+        Browser.Equal("Other", () => Browser.Exists(By.TagName("h1")).Text);
+        Assert.Equal("Other", originalH1Elem.Text);
 
-        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Redirect external")).Click();
-        Browser.Contains("microsoft.com", () => Browser.Url);
     }
 
     [Fact]
-    public void CanFollowAsynchronousExternalRedirectionWhileStreaming()
+    public void ScrollsToHashWithContentAddedAsynchronously()
     {
         Navigate($"{ServerPathBase}/nav");
-        Browser.Equal("Hello", () => Browser.Exists(By.TagName("h1")).Text);
+        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Scroll to hash")).Click();
+        Assert.Equal(0, Browser.GetScrollY());
 
-        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Redirect external while streaming")).Click();
-        Browser.Contains("microsoft.com", () => Browser.Url);
+        var asyncContentHeader = Browser.Exists(By.Id("some-content"));
+        Browser.Equal("Some content", () => asyncContentHeader.Text);
+        Browser.True(() => Browser.GetScrollY() > 500);
     }
 
     [Theory]
@@ -342,10 +308,16 @@ public void RefreshWithForceReloadDoesFullPageReload(string renderMode)
         Assert.EndsWith("/nav", Browser.Url);
     }
 
-    private long BrowserScrollY
+    [Fact]
+    public void EnhancedNavNotUsedForNonBlazorDestinations()
     {
-        get => Convert.ToInt64(((IJavaScriptExecutor)Browser).ExecuteScript("return window.scrollY"), CultureInfo.CurrentCulture);
-        set => ((IJavaScriptExecutor)Browser).ExecuteScript($"window.scrollTo(0, {value})");
+        Navigate($"{ServerPathBase}/nav");
+        Browser.Equal("Hello", () => Browser.Exists(By.TagName("h1")).Text);
+        Assert.Equal("object", Browser.ExecuteJavaScript<string>("return typeof Blazor")); // Blazor JS is loaded
+
+        Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Non-Blazor HTML page")).Click();
+        Browser.Equal("This is a non-Blazor endpoint", () => Browser.Exists(By.TagName("h1")).Text);
+        Assert.Equal("undefined", Browser.ExecuteJavaScript<string>("return typeof Blazor")); // Blazor JS is NOT loaded
     }
 
     private static bool IsElementStale(IWebElement element)
diff --git a/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTestUtil.cs b/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTestUtil.cs
index 549444d2e614..27de50df3bc3 100644
--- a/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTestUtil.cs
+++ b/src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTestUtil.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Globalization;
 using Microsoft.AspNetCore.Components.E2ETest.Infrastructure;
 using Microsoft.AspNetCore.Components.E2ETest.Infrastructure.ServerFixtures;
 using Microsoft.AspNetCore.E2ETesting;
@@ -28,4 +29,7 @@ public static void SuppressEnhancedNavigation<TServerFixture>(ServerTestBase<TSe
             ((IJavaScriptExecutor)browser).ExecuteScript("sessionStorage.setItem('suppress-enhanced-navigation', 'true')");
         }
     }
+
+    public static long GetScrollY(this IWebDriver browser)
+        => Convert.ToInt64(((IJavaScriptExecutor)browser).ExecuteScript("return window.scrollY"), CultureInfo.CurrentCulture);
 }
diff --git a/src/Components/test/E2ETest/ServerRenderingTests/FormHandlingTests/FormWithParentBindingContextTest.cs b/src/Components/test/E2ETest/ServerRenderingTests/FormHandlingTests/FormWithParentBindingContextTest.cs
index 466ce5cf9c1c..f9164075105b 100644
--- a/src/Components/test/E2ETest/ServerRenderingTests/FormHandlingTests/FormWithParentBindingContextTest.cs
+++ b/src/Components/test/E2ETest/ServerRenderingTests/FormHandlingTests/FormWithParentBindingContextTest.cs
@@ -40,6 +40,30 @@ public void CanDispatchToTheDefaultForm(bool suppressEnhancedNavigation)
         DispatchToFormCore(dispatchToForm);
     }
 
+    [Fact]
+    public void PlainFormIsNotEnhancedByDefault()
+    {
+        var dispatchToForm = new DispatchToForm(this)
+        {
+            Url = $"forms/non-enhanced-plainform",
+            FormCssSelector = "form",
+            FormIsEnhanced = false,
+        };
+        DispatchToFormCore(dispatchToForm);
+    }
+
+    [Fact]
+    public void EditFormIsNotEnhancedByDefault()
+    {
+        var dispatchToForm = new DispatchToForm(this)
+        {
+            Url = $"forms/non-enhanced-editform",
+            FormCssSelector = "form",
+            FormIsEnhanced = false,
+        };
+        DispatchToFormCore(dispatchToForm);
+    }
+
     [Theory]
     [InlineData(true)]
     [InlineData(false)]
@@ -1267,7 +1291,12 @@ private void DispatchToFormCore(DispatchToForm dispatch)
                 }
             }
 
-            if (!dispatch.SuppressEnhancedNavigation)
+            if (!dispatch.FormIsEnhanced)
+            {
+                // Verify the same form element is *not* still in the page
+                Assert.Throws<StaleElementReferenceException>(() => form.GetAttribute("method"));
+            }
+            else if (!dispatch.SuppressEnhancedNavigation)
             {
                 // Verify the same form element is still in the page
                 // We wouldn't be allowed to read the attribute if the element is stale
@@ -1306,6 +1335,7 @@ public DispatchToForm(FormWithParentBindingContextTest test) : this()
         public Action UpdateFormAction { get; internal set; }
         public Action<ReadOnlyCollection<IWebElement>> AssertErrors { get; internal set; }
         public string ErrorSelector { get; internal set; } = "#errors > li";
+        public bool FormIsEnhanced { get; internal set; } = true; // Default to true because that's the case for almost all test cases
     }
 
     private string GetExpectedTarget(FormWithParentBindingContextTest test, string expectedActionValue, string url)
diff --git a/src/Components/test/E2ETest/ServerRenderingTests/RedirectionTest.cs b/src/Components/test/E2ETest/ServerRenderingTests/RedirectionTest.cs
new file mode 100644
index 000000000000..a00568c2033b
--- /dev/null
+++ b/src/Components/test/E2ETest/ServerRenderingTests/RedirectionTest.cs
@@ -0,0 +1,224 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Components.TestServer.RazorComponents;
+using Microsoft.AspNetCore.Components.E2ETest.Infrastructure;
+using Microsoft.AspNetCore.Components.E2ETest.Infrastructure.ServerFixtures;
+using Microsoft.AspNetCore.E2ETesting;
+using OpenQA.Selenium;
+using TestServer;
+using Xunit.Abstractions;
+
+namespace Microsoft.AspNetCore.Components.E2ETests.ServerRenderingTests;
+
+public class RedirectionTest : ServerTestBase<BasicTestAppServerSiteFixture<RazorComponentEndpointsStartup<App>>>
+{
+    private IWebElement _originalH1Element;
+
+    public RedirectionTest(
+        BrowserFixture browserFixture,
+        BasicTestAppServerSiteFixture<RazorComponentEndpointsStartup<App>> serverFixture,
+        ITestOutputHelper output)
+        : base(browserFixture, serverFixture, output)
+    {
+    }
+
+    public override async Task InitializeAsync()
+    {
+        await base.InitializeAsync();
+        Navigate($"{ServerPathBase}/redirect");
+
+        _originalH1Element = Browser.Exists(By.TagName("h1"));
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+    }
+
+    [Fact]
+    public void RedirectStreamingGetToInternal()
+    {
+        Browser.Exists(By.LinkText("Streaming GET with internal redirection")).Click();
+        AssertElementRemoved(_originalH1Element);
+        Browser.Equal("Scroll to hash", () => Browser.Exists(By.TagName("h1")).Text);
+        Browser.True(() => Browser.GetScrollY() > 500);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash#some-content", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => Browser.Exists(By.TagName("h1")).Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingGetToExternal()
+    {
+        Browser.Exists(By.LinkText("Streaming GET with external redirection")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingPostToInternal()
+    {
+        Browser.Exists(By.CssSelector("#form-streaming-internal button")).Click();
+        AssertElementRemoved(_originalH1Element);
+        Browser.Equal("Scroll to hash", () => Browser.Exists(By.TagName("h1")).Text);
+        Browser.True(() => Browser.GetScrollY() > 500);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash#some-content", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => Browser.Exists(By.TagName("h1")).Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingPostToExternal()
+    {
+        Browser.Exists(By.CssSelector("#form-streaming-external button")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedGetToInternal()
+    {
+        // Note that for enhanced nav we can't preserve the hash part of the URL, as it
+        // gets discarded when the browser follows a 'fetch' redirection. This is not solvable
+        // unless we are willing to make the server return extra information so that the
+        // 'fetch' response does disclose the redirection hash to JS. As it stands, people
+        // who need to redirect to a URL with a hash need not to do an enhanced nav to it.
+
+        Browser.Exists(By.LinkText("Enhanced GET with internal redirection")).Click();
+        Browser.Equal("Scroll to hash", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedGetToExternal()
+    {
+        Browser.Exists(By.LinkText("Enhanced GET with external redirection")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedPostToInternal()
+    {
+        // See above for why enhanced nav doesn't support preserving the hash
+        Browser.Exists(By.CssSelector("#form-enhanced-internal button")).Click();
+        Browser.Equal("Scroll to hash", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedPostToExternal()
+    {
+        Browser.Exists(By.CssSelector("#form-enhanced-external button")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingEnhancedGetToInternal()
+    {
+        // See above for why enhanced nav doesn't support preserving the hash
+        Browser.Exists(By.LinkText("Streaming enhanced GET with internal redirection")).Click();
+        Browser.Equal("Scroll to hash", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingEnhancedGetToExternal()
+    {
+        Browser.Exists(By.LinkText("Streaming enhanced GET with external redirection")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingEnhancedPostToInternal()
+    {
+        // See above for why enhanced nav doesn't support preserving the hash
+        Browser.Exists(By.CssSelector("#form-streaming-enhanced-internal button")).Click();
+        Browser.Equal("Scroll to hash", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectStreamingEnhancedPostToExternal()
+    {
+        Browser.Exists(By.CssSelector("#form-streaming-enhanced-external button")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedNonBlazorGetToInternal()
+    {
+        // See above for why enhanced nav doesn't support preserving the hash
+        Browser.Exists(By.LinkText("Enhanced GET to non-Blazor endpoint with internal redirection")).Click();
+        Browser.Equal("Scroll to hash", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedNonBlazorGetToExternal()
+    {
+        Browser.Exists(By.LinkText("Enhanced GET to non-Blazor endpoint with external redirection")).Click();
+        Browser.Contains("microsoft.com", () => Browser.Url);
+    }
+
+    [Fact]
+    public void RedirectEnhancedNonBlazorPostToInternal()
+    {
+        // See above for why enhanced nav doesn't support preserving the hash
+        Browser.Exists(By.CssSelector("#form-nonblazor-enhanced-internal button")).Click();
+        Browser.Equal("Scroll to hash", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/nav/scroll-to-hash", Browser.Url);
+
+        // See that 'back' takes you to the place from before the redirection
+        Browser.Navigate().Back();
+        Browser.Equal("Redirections", () => _originalH1Element.Text);
+        Assert.EndsWith("/subdir/redirect", Browser.Url);
+    }
+
+    // There's no RedirectEnhancedNonBlazorPostToExternal case as it's explicitly unsupported
+    // We would need server-side middleware that runs on *all* requests to convert the 301/302/etc
+    // response to something like a 200 that the 'fetch' is allowed to read (embedding the
+    // destination URL).
+
+    private void AssertElementRemoved(IWebElement element)
+    {
+        Browser.True(() =>
+        {
+            try
+            {
+                element.GetDomProperty("tagName");
+            }
+            catch (StaleElementReferenceException)
+            {
+                return true;
+            }
+
+            return false;
+        });
+    }
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponentEndpointsStartup.cs b/src/Components/test/testassets/Components.TestServer/RazorComponentEndpointsStartup.cs
index bdb22fa7e184..9faafea5b2d5 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponentEndpointsStartup.cs
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponentEndpointsStartup.cs
@@ -125,6 +125,10 @@ private static void MapEnhancedNavigationEndpoints(IEndpointRouteBuilder endpoin
         // Used when testing that enhanced nav includes "Accept: text/html"
         endpoints.Map("/nav/list-headers", async (HttpRequest request, HttpResponse response) =>
         {
+            // We have to accept enanced nav explicitly since the test is checking what headers are sent for enhanced nav requests
+            // Otherwise, the client will retry as a non-enhanced-nav request and the UI won't show the enhanced nav headers
+            response.Headers.Add("blazor-enhanced-nav", "allow");
+
             response.ContentType = "text/html";
             await response.WriteAsync("<ul id='all-headers'>");
             foreach (var header in request.Headers)
@@ -133,5 +137,24 @@ private static void MapEnhancedNavigationEndpoints(IEndpointRouteBuilder endpoin
             }
             await response.WriteAsync("</ul>");
         });
+
+        // Used in the redirection to non-Blazor endpoints tests
+        endpoints.MapGet("redirect/nonblazor/get", PerformRedirection);
+        endpoints.MapPost("redirect/nonblazor/post", PerformRedirection);
+
+        // Used when testing enhanced navigation to non-Blazor endpoints
+        endpoints.Map("/nav/non-blazor-html-response", async (HttpResponse response) =>
+        {
+            response.ContentType = "text/html";
+            await response.WriteAsync("<html><body><h1>This is a non-Blazor endpoint</h1><p>That's all</p></body></html>");
+        });
+
+        static Task PerformRedirection(HttpRequest request, HttpResponse response)
+        {
+            response.Redirect(request.Query["external"] == "true"
+                ? "https://microsoft.com"
+                : $"{request.PathBase}/nav/scroll-to-hash#some-content");
+            return Task.CompletedTask;
+        }
     }
 }
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormBoundParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormBoundParameter.razor
index 7e23ff81dad0..7034f51ab3e7 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormBoundParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormBoundParameter.razor
@@ -1,6 +1,6 @@
 @using Microsoft.AspNetCore.Components.Forms
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="named-form-handler">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="named-form-handler">
     <AntiforgeryToken />
     <InputText @bind-Value="Parameter" />
     <input id="send" type="submit" value="Send" />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormInside.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormInside.razor
index 5918a065a1e0..5946d7dad5f1 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormInside.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Components/ComponentWithFormInside.razor
@@ -1,5 +1,5 @@
 @using Microsoft.AspNetCore.Components.Forms
-<EditForm EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
+<EditForm Enhance EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
     @if(BindingContext == null)
     {
         <AntiforgeryToken />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/Other.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/Other.razor
new file mode 100644
index 000000000000..c8230bead520
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/Other.razor
@@ -0,0 +1,7 @@
+@page "/nav/other"
+
+<PageTitle>Other</PageTitle>
+
+<h1>Other</h1>
+
+<p>This is any other page.</p>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/PageThatRedirects.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/PageThatRedirects.razor
deleted file mode 100644
index 9bf9a394fb3d..000000000000
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/PageThatRedirects.razor
+++ /dev/null
@@ -1,10 +0,0 @@
-@page "/nav/do-redirection"
-@inject NavigationManager Nav
-@code {
-    [Parameter, SupplyParameterFromQuery] public string Destination { get; set; }
-
-    protected override void OnInitialized()
-    {
-        Nav.NavigateTo(Destination ?? "nav/scroll-to-hash#some-content");
-    }
-}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/PageThatRedirectsWhileStreaming.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/PageThatRedirectsWhileStreaming.razor
deleted file mode 100644
index e3069f1ec3ff..000000000000
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/EnhancedNav/PageThatRedirectsWhileStreaming.razor
+++ /dev/null
@@ -1,13 +0,0 @@
-@page "/nav/do-redirection-while-streaming"
-@attribute [StreamRendering]
-@inject NavigationManager Nav
-<h1>Please wait...</h1>
-@code {
-    [Parameter, SupplyParameterFromQuery] public string Destination { get; set; }
-
-    protected override async Task OnInitializedAsync()
-    {
-        await Task.Delay(2000);
-        Nav.NavigateTo(Destination ?? "nav/scroll-to-hash#some-content");
-    }
-}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/AmbiguousForms.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/AmbiguousForms.razor
index cd896d11cefb..54719ad65f0b 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/AmbiguousForms.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/AmbiguousForms.razor
@@ -3,10 +3,10 @@
 
 <h2>Ambiguous forms</h2>
 
-<EditForm Model="this" method="POST" OnValidSubmit="() => {}" FormName="form1">
+<EditForm Enhance Model="this" method="POST" OnValidSubmit="() => {}" FormName="form1">
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
-<EditForm Model="this" method="POST" OnValidSubmit="() => {}" FormName="form1">
+<EditForm Enhance Model="this" method="POST" OnValidSubmit="() => {}" FormName="form1">
     <input id="send" type="submit" value="Send" />
 </EditForm>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ComponentThatThrows.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ComponentThatThrows.razor
index c840fe50c42a..0da499b44e26 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ComponentThatThrows.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ComponentThatThrows.razor
@@ -3,7 +3,7 @@
 
 <p><a href="@(Nav.GetUriWithQueryParameter(nameof(ThrowDuringInitialRender), true))">Throw during initial render</a></p>
 
-<form method="post" @formname="trigger-error" @onsubmit="TriggerError">
+<form data-enhance method="post" @formname="trigger-error" @onsubmit="TriggerError">
     <AntiforgeryToken />
     <button id="throw-sync" type="submit" name="@(nameof(Scenario))" value="ThrowDuringEventSync">Throw during event synchronously</button>
     <button id="throw-async" type="submit" name="@(nameof(Scenario))" value="ThrowDuringEventAsync">Throw during event asynchronously</button>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultForm.razor
index 12b038664c5a..e33200a8a5a5 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultForm.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form</h2>
 
-<EditForm EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
+<EditForm Enhance EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundCollectionParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundCollectionParameter.razor
index 0105955bce5b..72e22c284207 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundCollectionParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundCollectionParameter.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with dictionary bound parameter</h2>
 
-<EditForm Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
+<EditForm Enhance Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
     <ValidationSummary />
     @for(var i = 0; i< Model.Count;i++)
     {
@@ -30,7 +30,7 @@
                 <InputCheckbox @bind-Value="@Model[index].IsPreferred" />
             </label>
             <ValidationMessage data-index="@index" For="@(() => Model[index].IsPreferred)" />
-        </div>        
+        </div>
     }
     <input id="send" type="submit" value="Send" />
 </EditForm>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameter.razor
index 47ca1c45a58a..156d41465e38 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameter.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with bound complex type parameter</h2>
 
-<EditForm Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
+<EditForm Enhance Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
     <ValidationSummary />
     <div>
         <label for="Model.Name">
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameterMultipleComponents.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameterMultipleComponents.razor
index c3bb6254ede2..97b4f07dae8e 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameterMultipleComponents.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundComplexTypeParameterMultipleComponents.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with bound complex type parameter broken into multiple components</h2>
 
-<EditForm Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
+<EditForm Enhance Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
     <ValidationSummary />
     <div>
         <label for="Model.Name">
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameter.razor
index 951a77036488..bbe405135af4 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameter.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with dictionary bound parameter</h2>
 
-<EditForm Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
+<EditForm Enhance Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
     <ValidationSummary />
     <div>
         <label for="Model.Name">
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameterErrors.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameterErrors.razor
index 696408c6040d..463ac2c8f78b 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameterErrors.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundDictionaryParameterErrors.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with dictionary bound parameter</h2>
 
-<EditForm Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
+<EditForm Enhance Model="Model" method="POST" OnValidSubmit="DisplayCustomer" FormName="someform">
     <ValidationSummary />
     <div>
         <label for="Model.Name">
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParameters.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParameters.razor
index 5e6343bc901a..3a839527d99e 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParameters.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParameters.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with bound parameter</h2>
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="myform">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="myform">
     <input type="text" name="Parameter" value="@(_attemptedParameterValue ?? Parameter.ToString())" />
     <input type="text" name="OtherParameter" value="@(_attemptedOtherValue ?? OtherParameter.ToString())" />
     <input id="send" type="submit" value="Send" />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParametersChangedNames.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParametersChangedNames.razor
index 6b7950135dc9..77f8b875b6a1 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParametersChangedNames.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundMultiplePrimitiveParametersChangedNames.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with bound parameter</h2>
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="myform">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="myform">
     <input type="text" name="UpdatedParameter" value="@(_attemptedParameterValue ?? Parameter.ToString())" />
     <input type="text" name="UpdatedOtherParameter" value="@(_attemptedOtherValue ?? OtherParameter.ToString())" />
     <input id="send" type="submit" value="Send" />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameter.razor
index fb378a516b2d..1ff0a33551cf 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameter.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with bound parameter</h2>
 
-<EditForm Model="Parameter" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
+<EditForm Enhance Model="Parameter" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
     <InputText @bind-Value="Parameter" />
     <input id="send" type="submit" value="Send" />
 </EditForm>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameterAnnotations.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameterAnnotations.razor
index 553ec45b3b5a..50fbdc242d89 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameterAnnotations.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundParameterAnnotations.razor
@@ -5,7 +5,7 @@
 
 <h2>Default form with bound parameter using data annotations for validation and data member to tweak the binding.</h2>
 
-<EditForm Model="Parameter" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
+<EditForm Model="Parameter" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform" Enhance>
     <DataAnnotationsValidator />
     <ValidationSummary/>
     <p>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundPrimitiveParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundPrimitiveParameter.razor
index 2c20fc47fbf4..f5231a04ee48 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundPrimitiveParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormBoundPrimitiveParameter.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with bound parameter</h2>
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="myform">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="myform">
     <input type="text" name="Parameter" value="@(_attemptedValue ?? Parameter.ToString())" />
     <input id="send" type="submit" value="Send" />
     <AntiforgeryToken />
@@ -14,7 +14,7 @@
     var errors = Context.GetErrors("Parameter");
     if (errors == null)
     {
-        <p id="pass">Your number is @Parameter!</p>        
+        <p id="pass">Your number is @Parameter!</p>
     }else
     {
         <p>There were errors:</p>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxCollectionLimit.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxCollectionLimit.razor
index f3506c292197..3385f68c89e5 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxCollectionLimit.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxCollectionLimit.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form hitting max collection limit</h2>
 
-<EditForm Model="Values" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
+<EditForm Enhance Model="Values" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
     <ValidationSummary />
     @for (int i = 0; i < Values.Length; i++)
     {
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxRecursionDepth.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxRecursionDepth.razor
index 02af98572db7..88d92dfd3207 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxRecursionDepth.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormMaxRecursionDepth.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form hitting max collection limit</h2>
 
-<EditForm Model="Values" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
+<EditForm Enhance Model="Values" method="POST" OnValidSubmit="() => _submitted = true" FormName="someform">
     <ValidationSummary />
     <CustomNumberInput @bind-Value="Values.Head" />
     @if (Values?.Tail != null)
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormWithBodyOnInitialized.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormWithBodyOnInitialized.razor
index 30db82f7ac4d..d0e885f4164e 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormWithBodyOnInitialized.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DefaultFormWithBodyOnInitialized.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form with body on initialized</h2>
 
-<EditForm EditContext="_editContext" method="POST" FormName="someform">
+<EditForm Enhance EditContext="_editContext" method="POST" FormName="someform">
     <input id="firstName" name="firstName" />
     <input id="send" type="submit" value="Send" />
 </EditForm>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DisappearingForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DisappearingForm.razor
index aa01ebf60fe1..e95656e10bb2 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DisappearingForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/DisappearingForm.razor
@@ -11,7 +11,7 @@
 }
 
 @* Just here so that the test can dispatch the event. *@
-<form method="post" enctype="application/x-www-form-urlencoded" id="test-form">
+<form data-enhance method="post" enctype="application/x-www-form-urlencoded" id="test-form">
     <AntiforgeryToken />
     <input id="test-send" type="submit" value="test-send" />
 </form>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormAntiforgeryAfterResponseStarted.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormAntiforgeryAfterResponseStarted.razor
index 4f5efec24362..938296928d7a 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormAntiforgeryAfterResponseStarted.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormAntiforgeryAfterResponseStarted.razor
@@ -6,7 +6,7 @@
 
 @if(_renderForm)
 {
-    <form method="post" @onsubmit="() => _submitted = true" @formname="myform">
+    <form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="myform">
         <input id="send" type="submit" value="Send" />
         <AntiforgeryToken />
     </form>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormDisableAntiforgery.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormDisableAntiforgery.razor
index 006a91847b7e..be0eb4ca9df6 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormDisableAntiforgery.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormDisableAntiforgery.razor
@@ -5,7 +5,7 @@
 
 <h2>Default form</h2>
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="myform">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="myform">
     <input id="send" type="submit" value="Send" />
 </form>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoAntiforgery.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoAntiforgery.razor
index e97dc790f4c0..5ab564216a9d 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoAntiforgery.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoAntiforgery.razor
@@ -3,7 +3,7 @@
 
 <h2>Default form</h2>
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="someform">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="someform">
     <input id="send" type="submit" value="Send" />
 </form>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoHandler.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoHandler.razor
index 1219ecf31be9..9bce527bb582 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoHandler.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormNoHandler.razor
@@ -3,6 +3,6 @@
 
 <h2>Form with no handler</h2>
 
-<EditForm Model="@this" OnValidSubmit="() => {}">
+<EditForm Enhance Model="@this" OnValidSubmit="() => {}">
     <input id="send" type="submit" value="Send" />
 </EditForm>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsGuid.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsGuid.razor
index 0b9fde94db1e..6dd640f9846b 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsGuid.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsGuid.razor
@@ -2,7 +2,7 @@
 
 <h2>Form that binds guid</h2>
 
-<form name="bind-guid" method="post" @onsubmit="() => _submitted = true" @formname="bind-guid">
+<form data-enhance name="bind-guid" method="post" @onsubmit="() => _submitted = true" @formname="bind-guid">
     <input type="text" name="Id" value="@(_attemptedValue ?? Id.ToString())" />
     <input id="send-guid" type="submit" value="Send" />
     <AntiforgeryToken />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsInteger.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsInteger.razor
index a58a6414976f..2b9236c8a8cf 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsInteger.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/FormThatBindsInteger.razor
@@ -2,7 +2,7 @@
 
 <h2>Form that binds integer</h2>
 
-<form name="bind-integer" method="post" @onsubmit="() => _submitted = true" @formname="bind-integer">
+<form data-enhance name="bind-integer" method="post" @onsubmit="() => _submitted = true" @formname="bind-integer">
     <input type="text" name="Id" value="@(_attemptedValue ?? Id.ToString())" />
     <input id="send" type="submit" value="Send" />
     <AntiforgeryToken />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ModifyHttpContextForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ModifyHttpContextForm.razor
index 5109303ae5d5..41cf5fe1df40 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ModifyHttpContextForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/ModifyHttpContextForm.razor
@@ -10,7 +10,7 @@
 
 <h2>Event handler sets cookie during form POST</h2>
 
-<EditForm EditContext="_editContext" method="POST" OnValidSubmit="HandleSubmit" FormName="someform">
+<EditForm Enhance EditContext="_editContext" method="POST" OnValidSubmit="HandleSubmit" FormName="someform">
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/MutateAndReRenderChild.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/MutateAndReRenderChild.razor
index b395773a9adc..5a49101e2680 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/MutateAndReRenderChild.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/MutateAndReRenderChild.razor
@@ -2,7 +2,7 @@
 
 <h2>Render count: <span id="render-count">@(++renderCount)</span></h2>
 
-<form method="post" @formname="mutate-and-notify" @onsubmit="HandleSubmit">
+<form data-enhance method="post" @formname="mutate-and-notify" @onsubmit="HandleSubmit">
     <AntiforgeryToken />
     <p>
         Simple value:
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedForm.razor
index 2c0759321638..45d42f65124d 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedForm.razor
@@ -3,7 +3,7 @@
 
 <h2>Named form</h2>
 
-<EditForm FormName="named-form-handler" EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" >
+<EditForm Enhance FormName="named-form-handler" EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" >
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundParameter.razor
index 49239b11c2bd..d44265a56300 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundParameter.razor
@@ -3,7 +3,7 @@
 
 <h2>Named form with bound parameter</h2>
 
-<EditForm FormName="named-form-handler" Model="Parameter" method="POST" OnValidSubmit="() => _submitted = true" >
+<EditForm Enhance FormName="named-form-handler" Model="Parameter" method="POST" OnValidSubmit="() => _submitted = true" >
     <InputText @bind-Value="Parameter" />
     <input id="send" type="submit" value="Send" />
 </EditForm>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameter.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameter.razor
index 9fb49379210d..bff2d0888125 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameter.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameter.razor
@@ -4,7 +4,7 @@
 
 <h2>Named form with bound parameter</h2>
 
-<form name="my-bound-form" method="post" @onsubmit="() => _submitted = true" @formname="named-form-handler">
+<form data-enhance name="my-bound-form" method="post" @onsubmit="() => _submitted = true" @formname="named-form-handler">
     <input type="text" name="Parameter" value="@(_attemptedValue ?? Parameter.ToString())" />
     <input id="send" type="submit" value="Send" />
     <AntiforgeryToken />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameterValidatorIntegration.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameterValidatorIntegration.razor
index 01edadd467d6..422cde4474a0 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameterValidatorIntegration.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormBoundPrimitiveParameterValidatorIntegration.razor
@@ -4,7 +4,7 @@
 
 <h2>Named form with bound parameter</h2>
 
-<EditForm FormName="named-form-handler" Model="Model" method="POST" OnValidSubmit="() => _submitted = true">
+<EditForm Enhance FormName="named-form-handler" Model="Model" method="POST" OnValidSubmit="() => _submitted = true">
     <ValidationSummary />
 
     <CustomNumberInput @bind-Value="Model.Parameter" />
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormContextNoFormContextLayout.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormContextNoFormContextLayout.razor
index 0387c5fdf6c6..d88a66535f3c 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormContextNoFormContextLayout.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NamedFormContextNoFormContextLayout.razor
@@ -2,7 +2,7 @@
 
 <h2>Named form</h2>
 
-<EditForm FormName="named-form-handler" EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" >
+<EditForm Enhance FormName="named-form-handler" EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true" >
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NestedNamedForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NestedNamedForm.razor
index 6553c18a3f29..1496f3d08b9d 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NestedNamedForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NestedNamedForm.razor
@@ -4,7 +4,7 @@
 <h2>Nested named form</h2>
 
 <FormMappingScope Name="parent-context" Context="bindingContext">
-    <EditForm FormName="named-form-handler" EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true">
+    <EditForm Enhance FormName="named-form-handler" EditContext="_editContext" method="POST" OnValidSubmit="() => _submitted = true">
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonEnhancedEditForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonEnhancedEditForm.razor
new file mode 100644
index 000000000000..fc93ea42dcfc
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonEnhancedEditForm.razor
@@ -0,0 +1,17 @@
+@page "/forms/non-enhanced-editform"
+@using Microsoft.AspNetCore.Components.Forms
+
+<h2>Non-enhanced editform</h2>
+
+<EditForm FormName="someform" Model="@this" method="POST" OnValidSubmit="() => _submitted = true">
+    <input id="send" type="submit" value="Send" />
+</EditForm>
+
+@if (_submitted)
+{
+    <p id="pass">Form submitted!</p>
+}
+
+@code{
+    bool _submitted = false;
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonEnhancedPlainForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonEnhancedPlainForm.razor
new file mode 100644
index 000000000000..4f4855a00ffe
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonEnhancedPlainForm.razor
@@ -0,0 +1,18 @@
+@page "/forms/non-enhanced-plainform"
+@using Microsoft.AspNetCore.Components.Forms
+
+<h2>Non-enhanced form</h2>
+
+<form @formname="someform" method="POST" @onsubmit="() => _submitted = true">
+    <AntiforgeryToken />
+    <input id="send" type="submit" value="Send" />
+</form>
+
+@if (_submitted)
+{
+    <p id="pass">Form submitted!</p>
+}
+
+@code{
+    bool _submitted = false;
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonStreamingRenderingForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonStreamingRenderingForm.razor
index 53244f5511d1..403b0e547b3a 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonStreamingRenderingForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/NonStreamingRenderingForm.razor
@@ -7,7 +7,7 @@
 
 <h2>Non streaming async form</h2>
 
-<EditForm EditContext="_editContext" method="POST" OnValidSubmit="HandleSubmit" FormName="someform">
+<EditForm Enhance EditContext="_editContext" method="POST" OnValidSubmit="HandleSubmit" FormName="someform">
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PlainForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PlainForm.razor
index 5f24a5d9058a..7dc4b0f459fe 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PlainForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PlainForm.razor
@@ -3,7 +3,7 @@
 
 <h2>Plain form</h2>
 
-<form method="post" @onsubmit="() => _submitted = true" @formname="my-form">
+<form data-enhance method="post" @onsubmit="() => _submitted = true" @formname="my-form">
     <AntiforgeryToken />
 
     <p id="StringViaExplicitPropertyName">
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGet.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGet.razor
index 50ea3fcf3f56..c19b4dd8f9fc 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGet.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGet.razor
@@ -4,12 +4,12 @@
 
 <h3>Post/Redirect/Get</h3>
 
-<form method="post" @formname="sync-form" @onsubmit="@DoRedirection">
+<form data-enhance method="post" @formname="sync-form" @onsubmit="@DoRedirection">
     <AntiforgeryToken />
     <button id="sync-redirect" type="submit">Redirect synchronously</button>
 </form>
 
-<form method="post" @formname="async-form" @onsubmit="@DoAsyncRedirection">
+<form data-enhance method="post" @formname="async-form" @onsubmit="@DoAsyncRedirection">
     <AntiforgeryToken />
     <button id="async-redirect" type="submit">Redirect asynchronously</button>
 </form>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGetStreaming.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGetStreaming.razor
index f904c59fb337..2f1343442860 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGetStreaming.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/PostRedirectGetStreaming.razor
@@ -5,12 +5,12 @@
 
 <h3>Post/Redirect/Get</h3>
 
-<form method="post" @formname="sync-form" @onsubmit="@DoRedirection">
+<form data-enhance method="post" @formname="sync-form" @onsubmit="@DoRedirection">
     <AntiforgeryToken />
     <button id="sync-redirect" type="submit">Redirect synchronously</button>
 </form>
 
-<form method="post" @formname="async-form" @onsubmit="@DoAsyncRedirection">
+<form data-enhance method="post" @formname="async-form" @onsubmit="@DoAsyncRedirection">
     <AntiforgeryToken />
     <button id="async-redirect" type="submit">Redirect asynchronously</button>
 </form>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/StreamingRenderingForm.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/StreamingRenderingForm.razor
index 465a3d0f5365..1e471ec9a541 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/StreamingRenderingForm.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Forms/StreamingRenderingForm.razor
@@ -8,7 +8,7 @@
 
 <h2>Streaming rendering async form</h2>
 
-<EditForm EditContext="_editContext" method="POST" OnValidSubmit="HandleSubmit" FormName="someform">
+<EditForm Enhance EditContext="_editContext" method="POST" OnValidSubmit="HandleSubmit" FormName="someform">
     <input id="send" type="submit" value="Send" />
 </EditForm>
 
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectGet.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectGet.razor
new file mode 100644
index 000000000000..ba6d51723809
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectGet.razor
@@ -0,0 +1,15 @@
+@page "/redirect/get"
+@inject NavigationManager Nav
+
+<h1>Nonstreaming GET</h1>
+
+@code {
+    [SupplyParameterFromQuery]
+    public bool External { get; set; }
+
+    protected override async Task OnInitializedAsync()
+    {
+        await Task.Delay(500);
+        Nav.NavigateTo(External ? "https://microsoft.com" : "nav/scroll-to-hash#some-content");
+    }
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectHome.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectHome.razor
new file mode 100644
index 000000000000..00d018926901
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectHome.razor
@@ -0,0 +1,92 @@
+@page "/redirect"
+@using Microsoft.AspNetCore.Components.Forms
+
+<h1>Redirections</h1>
+
+<p>
+    If streaming and enhanced nav are both off, Blazor has no special involvement in the GET/POST,
+    so normal browser/HTTP behavior applies. So, we only need to test cases where either or both
+    of them are on.
+</p>
+
+<h2>Streaming on, enhanced nav off cases</h2>
+<ul data-enhance-nav="false">
+    <li><a href="redirect/streaming/get">Streaming GET with internal redirection</a></li>
+    <li><a href="redirect/streaming/get?external=true">Streaming GET with external redirection</a></li>
+    <li>
+        <form id="form-streaming-internal" @formname="myform" method="post" action="redirect/streaming/post">
+            <AntiforgeryToken />
+            <button>Streaming POST with internal redirection</button>
+        </form>
+    </li>
+    <li>
+        <form id="form-streaming-external" @formname="myform" method="post" action="redirect/streaming/post?external=true">
+            <AntiforgeryToken />
+            <button>Streaming POST with external redirection</button>
+        </form>
+    </li>
+</ul>
+
+<h2>Streaming off, enhanced nav on cases</h2>
+<ul>
+    <li><a href="redirect/get">Enhanced GET with internal redirection</a></li>
+    <li><a href="redirect/get?external=true">Enhanced GET with external redirection</a></li>
+    <li>
+        <form id="form-enhanced-internal" @formname="myform" method="post" action="redirect/post" data-enhance>
+            <AntiforgeryToken />
+            <button>Enhanced POST with internal redirection</button>
+        </form>
+    </li>
+    <li>
+        <form id="form-enhanced-external" @formname="myform" method="post" action="redirect/post?external=true" data-enhance>
+            <AntiforgeryToken />
+            <button>Enhanced POST with external redirection</button>
+        </form>
+    </li>
+</ul>
+
+<h2>Streaming on, enhanced nav on cases</h2>
+<ul>
+    <li><a href="redirect/streaming/get">Streaming enhanced GET with internal redirection</a></li>
+    <li><a href="redirect/streaming/get?external=true">Streaming enhanced GET with external redirection</a></li>
+    <li>
+        <form id="form-streaming-enhanced-internal" @formname="myform" method="post" action="redirect/streaming/post" data-enhance>
+            <AntiforgeryToken />
+            <button>Streaming enhanced POST with internal redirection</button>
+        </form>
+    </li>
+    <li>
+        <form id="form-streaming-enhanced-external" @formname="myform" method="post" action="redirect/streaming/post?external=true" data-enhance>
+            <AntiforgeryToken />
+            <button>Streaming enhanced POST with external redirection</button>
+        </form>
+    </li>
+</ul>
+
+<h2>Enhanced nav to non-Blazor endpoint cases</h2>
+<p>
+    In these cases we can't rely on the server doing anything special to participate in the process.
+    The server is just going to return a regular 302, not any special signal. If the target URL is internal,
+    the "fetch" request will follow it automatically so it just works. If the target URL is external, the
+    "fetch" gets an opaque response, and so if it's a GET we'll follow by retrying, or if it's POST
+    we have to just fail because we can't safely retry.
+</p>
+<ul>
+    <li><a href="redirect/nonblazor/get">Enhanced GET to non-Blazor endpoint with internal redirection</a></li>
+    <li><a href="redirect/nonblazor/get?external=true">Enhanced GET to non-Blazor endpoint with external redirection</a></li>
+    <li>
+        <!-- We don't recommend enhanced posts to non-Blazor endpoints, but people might still do it -->
+        <form id="form-nonblazor-enhanced-internal" @formname="myform" method="post" action="redirect/nonblazor/post" data-enhance>
+            <AntiforgeryToken />
+            <button>Enhanced POST to non-Blazor endpoint with internal redirection</button>
+        </form>
+    </li>
+    <li>
+        <!-- We don't recommend enhanced posts to non-Blazor endpoints, but people might still do it -->
+        <form id="form-nonblazor-enhanced-external" @formname="myform" method="post" action="redirect/nonblazor/post?external=true" data-enhance>
+            <AntiforgeryToken />
+            <button>Enhanced POST to non-Blazor endpoint with external redirection</button>
+            <span>Note: this case is not supported and is shown here only for manual testing. No E2E test attempts this case.</span>
+        </form>
+    </li>
+</ul>
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectPost.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectPost.razor
new file mode 100644
index 000000000000..17e9a7fe52c2
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectPost.razor
@@ -0,0 +1,17 @@
+@page "/redirect/post"
+@inject NavigationManager Nav
+@using Microsoft.AspNetCore.Components.Forms
+
+<h1>Nonstreaming POST</h1>
+
+<form @formname="myform" method="post" @onsubmit="DoRedirectionAsync"></form>
+
+@code {
+    [SupplyParameterFromQuery] public bool External { get; set; }
+
+    private async Task DoRedirectionAsync()
+    {
+        await Task.Delay(500);
+        Nav.NavigateTo(External ? "https://microsoft.com" : "nav/scroll-to-hash#some-content");
+    }
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectStreamingGet.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectStreamingGet.razor
new file mode 100644
index 000000000000..caa527131b53
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectStreamingGet.razor
@@ -0,0 +1,16 @@
+@page "/redirect/streaming/get"
+@attribute [StreamRendering]
+@inject NavigationManager Nav
+
+<h1>Streaming GET</h1>
+
+@code {
+    [SupplyParameterFromQuery]
+    public bool External { get; set; }
+
+    protected override async Task OnInitializedAsync()
+    {
+        await Task.Delay(500);
+        Nav.NavigateTo(External ? "https://microsoft.com" : "nav/scroll-to-hash#some-content");
+    }
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectStreamingPost.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectStreamingPost.razor
new file mode 100644
index 000000000000..64f0ef807890
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/RedirectStreamingPost.razor
@@ -0,0 +1,18 @@
+@page "/redirect/streaming/post"
+@attribute [StreamRendering]
+@inject NavigationManager Nav
+@using Microsoft.AspNetCore.Components.Forms
+
+<h1>Streaming POST</h1>
+
+<form @formname="myform" method="post" @onsubmit="DoRedirectionAsync"></form>
+
+@code {
+    [SupplyParameterFromQuery] public bool External { get; set; }
+
+    private async Task DoRedirectionAsync()
+    {
+        await Task.Delay(500);
+        Nav.NavigateTo(External ? "https://microsoft.com" : "nav/scroll-to-hash#some-content");
+    }
+}
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/_Imports.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/_Imports.razor
new file mode 100644
index 000000000000..b16bca428b30
--- /dev/null
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Pages/Redirections/_Imports.razor
@@ -0,0 +1 @@
+@layout Components.TestServer.RazorComponents.Shared.EnhancedNavLayout
diff --git a/src/Components/test/testassets/Components.TestServer/RazorComponents/Shared/EnhancedNavLayout.razor b/src/Components/test/testassets/Components.TestServer/RazorComponents/Shared/EnhancedNavLayout.razor
index 5a095fae12a0..300285fb89c6 100644
--- a/src/Components/test/testassets/Components.TestServer/RazorComponents/Shared/EnhancedNavLayout.razor
+++ b/src/Components/test/testassets/Components.TestServer/RazorComponents/Shared/EnhancedNavLayout.razor
@@ -7,15 +7,18 @@
     <NavLink href="nav/give-404-with-content">Error page with 404 content</NavLink> |
     <NavLink href="nav/nonexistent-page">Error page with no content</NavLink> |
     <NavLink href="nav/non-html-response">Non-HTML page</NavLink> |
+    <NavLink href="nav/non-blazor-html-response">Non-Blazor HTML page</NavLink> |
     <NavLink href="nav/scroll-to-hash#some-content">Scroll to hash</NavLink> |
-    <NavLink href="nav/do-redirection">Redirect</NavLink> |
-    <NavLink href="nav/do-redirection?destination=https://microsoft.com">Redirect external</NavLink> |
-    <NavLink href="nav/do-redirection-while-streaming">Redirect while streaming</NavLink> |
-    <NavLink href="nav/do-redirection-while-streaming?destination=https://microsoft.com">Redirect external while streaming</NavLink> |
     <NavLink href="nav/throw-while-streaming">Error while streaming</NavLink> |
     <NavLink href="nav/interactive-component-navigation/server">Interactive component navigation (server)</NavLink> |
     <NavLink href="nav/interactive-component-navigation/webassembly">Interactive component navigation (webassembly)</NavLink> |
     <NavLink href="nav/list-headers">List headers</NavLink> |
+    <span data-enhance-nav="false">
+        <NavLink href="nav/other">Other (no enhanced nav)</NavLink> |
+        <span data-enhance-nav>
+            <NavLink href="nav/other">Other (re-enabled enhanced nav)</NavLink> |
+        </span>
+    </span>
 </nav>
 <hr/>
 @Body