Add HttpReqeuest GetEncodedUrl and GetDecodedUrl extensions.

src/Microsoft.AspNet.Http.Extensions/UriHelper.cs

@@ -71,5 +71,27 @@ public static string Encode(Uri uri)
                 return uri.GetComponents(UriComponents.SerializationInfoString, UriFormat.UriEscaped);
             }
         }
+
+        /// <summary>
+        /// Returns the combined components of the request URL in a fully escaped form suitable for use in HTTP headers
+        /// and other HTTP operations.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <returns></returns>
+        public static string GetEncodedUrl(this HttpRequest request)
+        {
+            return Encode(request.Scheme, request.Host, request.PathBase, request.Path, request.QueryString);
+        }
+
+        /// <summary>
+        /// Returns the combined components of the request URL in a fully un-escaped form (except for the QueryString)
+        /// suitable only for display. This format should not be used in HTTP headers or other HTTP operations.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <returns></returns>
+        public static string GetDisplayUrl(this HttpRequest request)
+        {
+            return request.Scheme + "://" + request.Host.Value + request.PathBase.Value + request.Path.Value + request.QueryString.Value;
+        }
     }
 }

test/Microsoft.AspNet.Http.Extensions.Tests/UriHelperTests.cs

@@ -0,0 +1,71 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using Microsoft.AspNet.Http.Internal;
+using Xunit;
+
+namespace Microsoft.AspNet.Http.Extensions
+{
+    public class UriHelperTests
+    {
+        [Fact]
+        public void EncodeEmptyPartialUrl()
+        {
+            var result = UriHelper.Encode();
+
+            Assert.Equal("/", result);
+        }
+
+        [Fact]
+        public void EncodePartialUrl()
+        {
+            var result = UriHelper.Encode(new PathString("/un?escaped/base"), new PathString("/un?escaped"),
+                new QueryString("?name=val%23ue"), new FragmentString("#my%20value"));
+
+            Assert.Equal("/un%3Fescaped/base/un%3Fescaped?name=val%23ue#my%20value", result);
+        }
+
+        [Fact]
+        public void EncodeEmptyFullUrl()
+        {
+            var result = UriHelper.Encode("http", new HostString(string.Empty));
+
+            Assert.Equal("http:///", result);
+        }
+
+        [Fact]
+        public void EncodeFullUrl()
+        {
+            var result = UriHelper.Encode("http", new HostString("my.HoΨst:80"), new PathString("/un?escaped/base"), new PathString("/un?escaped"),
+                new QueryString("?name=val%23ue"), new FragmentString("#my%20value"));
+
+            Assert.Equal("http://my.xn--host-cpd:80/un%3Fescaped/base/un%3Fescaped?name=val%23ue#my%20value", result);
+        }
+
+        [Fact]
+        public void GetEncodedUrlFromRequest()
+        {
+            var request = new DefaultHttpContext().Request;
+            request.Scheme = "http";
+            request.Host = new HostString("my.HoΨst:80");
+            request.PathBase = new PathString("/un?escaped/base");
+            request.Path = new PathString("/un?escaped");
+            request.QueryString = new QueryString("?name=val%23ue");
+
+            Assert.Equal("http://my.xn--host-cpd:80/un%3Fescaped/base/un%3Fescaped?name=val%23ue", request.GetEncodedUrl());
+        }
+
+        [Fact]
+        public void GetDisplayUrlFromRequest()
+        {
+            var request = new DefaultHttpContext().Request;
+            request.Scheme = "http";
+            request.Host = new HostString("my.HoΨst:80");
+            request.PathBase = new PathString("/un?escaped/base");
+            request.Path = new PathString("/un?escaped");
+            request.QueryString = new QueryString("?name=val%23ue");
+
+            Assert.Equal("http://my.hoψst:80/un?escaped/base/un?escaped?name=val%23ue", request.GetDisplayUrl());
+        }
+    }
+}