Fix Http/3 tests (#50852)

Author: BrennanConroy

src/Servers/Kestrel/test/Interop.FunctionalTests/Http3/Http3RequestTests.cs

@@ -393,7 +393,7 @@ static async Task<HttpResponseMessage> SendRequestAsync(HttpProtocols protocol,
 
     [ConditionalFact]
     [MsQuicSupported]
-    [SkipOnCI("https://github.com/dotnet/aspnetcore/issues/50833")]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/50833")]
     public async Task POST_ServerCompletesWithoutReadingRequestBody_ClientGetsResponse()
     {
         // Arrange
@@ -430,6 +430,8 @@ public async Task POST_ServerCompletesWithoutReadingRequestBody_ClientGetsRespon
 
             var response = await responseTask.DefaultTimeout();
 
+            requestContent.CompleteStream();
+
             // Assert
             response.EnsureSuccessStatusCode();
             Assert.Equal(HttpVersion.Version30, response.Version);
@@ -698,7 +700,7 @@ public async Task GET_ServerAbort_ClientReceivesAbort(HttpProtocols protocol)
 
     [ConditionalFact]
     [MsQuicSupported]
-    [SkipOnCI("https://github.com/dotnet/aspnetcore/issues/50833")]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/50833")]
     public async Task POST_Expect100Continue_Get100Continue()
     {
         // Arrange
@@ -726,7 +728,7 @@ public async Task POST_Expect100Continue_Get100Continue()
 
             // Act
             using var cts = new CancellationTokenSource();
-            cts.CancelAfter(TimeSpan.FromSeconds(1));
+            cts.CancelAfter(TimeSpan.FromSeconds(30));
             var responseTask = client.SendAsync(request, cts.Token);
 
             var response = await responseTask.DefaultTimeout();
@@ -958,7 +960,7 @@ await ServerRetryHelper.BindPortsWithRetry(async port =>
     [ConditionalTheory]
     [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/38008")]
     [MsQuicSupported]
-    //[InlineData(HttpProtocols.Http3)] Skip: see https://github.com/dotnet/aspnetcore/issues/50833
+    [InlineData(HttpProtocols.Http3)]
     [InlineData(HttpProtocols.Http2)]
     public async Task POST_ClientCancellationBidirectional_RequestAbortRaised(HttpProtocols protocol)
     {
@@ -1059,7 +1061,8 @@ public async Task POST_ClientCancellationBidirectional_RequestAbortRaised(HttpPr
     // Verify HTTP/2 and HTTP/3 match behavior
     [ConditionalTheory]
     [MsQuicSupported]
-    //[InlineData(HttpProtocols.Http3)] Skip: see https://github.com/dotnet/aspnetcore/issues/50833
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/50833")]
+    [InlineData(HttpProtocols.Http3)]
     [InlineData(HttpProtocols.Http2)]
     public async Task POST_Bidirectional_LargeData_Cancellation_Error(HttpProtocols protocol)
     {