feat: Add support for percent encoded requests

Sources/NIOHTTPClient/HTTPHandler.swift

@@ -228,7 +228,8 @@ extension HTTPClientResponseDelegate {
 
 internal extension URL {
     var uri: String {
-        return path.isEmpty ? "/" : path + (query.map { "?" + $0 } ?? "")
+        let urlEncodedPath = path.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? path
+        return path.isEmpty ? "/" : urlEncodedPath + (query.map { "?" + $0 } ?? "")
     }
 
     func hasTheSameOrigin(as other: URL) -> Bool {

Tests/NIOHTTPClientTests/HTTPClientTestUtils.swift

@@ -246,6 +246,14 @@ internal final class HttpBinHandler: ChannelInboundHandler {
                 headers.add(name: "Location", value: "http://127.0.0.1:\(port)/echohostheader")
                 self.resps.append(HTTPResponseBuilder(status: .found, headers: headers))
                 return
+            // Since this String is taken from URL.path, the percent encoding has been removed
+            case "/percent encoded":
+                if req.method != .GET {
+                    self.resps.append(HTTPResponseBuilder(status: .methodNotAllowed))
+                    return
+                }
+                self.resps.append(HTTPResponseBuilder(status: .ok))
+                return
             case "/echohostheader":
                 var builder = HTTPResponseBuilder(status: .ok)
                 let hostValue = req.headers["Host"].first ?? ""

Tests/NIOHTTPClientTests/HTTPClientTests+XCTest.swift

@@ -32,6 +32,7 @@ extension HTTPClientTests {
             ("testPostHttps", testPostHttps),
             ("testHttpRedirect", testHttpRedirect),
             ("testHttpHostRedirect", testHttpHostRedirect),
+            ("testPercentEncoded", testPercentEncoded),
             ("testMultipleContentLengthHeaders", testMultipleContentLengthHeaders),
             ("testStreaming", testStreaming),
             ("testRemoteClose", testRemoteClose),

Tests/NIOHTTPClientTests/HTTPClientTests.swift

@@ -135,6 +135,18 @@ class HTTPClientTests: XCTestCase {
         let hostName = try decoder.decode([String: String].self, from: responseData)["data"]
         XCTAssert(hostName == "127.0.0.1")
     }
+
+    func testPercentEncoded() throws {
+        let httpBin = HttpBin()
+        let httpClient = HTTPClient(eventLoopGroupProvider: .createNew)
+        defer {
+            try! httpClient.syncShutdown()
+            httpBin.shutdown()
+        }
+
+        let response = try httpClient.get(url: "http://localhost:\(httpBin.port)/percent%20encoded").wait()
+        XCTAssertEqual(.ok, response.status)
+    }
 
     func testMultipleContentLengthHeaders() throws {
         let httpClient = HTTPClient(eventLoopGroupProvider: .createNew)