Re-enable failing H2C tests

[dougbu]

Describe the bug

Most (10 of 12) gRPC tests started failing in https://dev.azure.com/dnceng/public/_build/results?buildId=769894, the validation build for a dependency update from dotnet/runtime and dotnet/efcore (#24876). Skipping all tests in that PR. They will need to be investigated and re-enabled.

Note this is likely a product issue and not just a test problem.

To Reproduce

Re-enable one of the tests mentioning this bug. Watch it fail.

Exceptions (if any)

For example…

[xUnit.net 00:00:09.39]       Client process output:
[xUnit.net 00:00:09.39]       ======================================
[xUnit.net 00:00:09.39]       Application started.
[xUnit.net 00:00:09.39]       NetCoreAppVersion: 5.0.0-rc.1.20412.8+0db8ecbea291c09cfd84d7f33ea049f5c0cec94f
[xUnit.net 00:00:09.39]       Use TLS: False
[xUnit.net 00:00:09.39]       Use Test CA: False
[xUnit.net 00:00:09.39]       Client type: httpclient
[xUnit.net 00:00:09.39]       Server host: localhost
[xUnit.net 00:00:09.39]       Server port: 38719
[xUnit.net 00:00:09.39]       running special_status_message
[xUnit.net 00:00:09.39]       �[40m�[37mdbug�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[1]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Starting gRPC call. Method type: 'Unary', URI: 'http://localhost:38719/grpc.testing.TestService/UnaryCall'.
[xUnit.net 00:00:09.39]       �[40m�[37mdbug�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[18]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Sending message.
[xUnit.net 00:00:09.39]       �[40m�[37mtrce�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[21]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Serialized 'Grpc.Testing.SimpleRequest' to 68 byte message.
[xUnit.net 00:00:09.39]       �[40m�[37mtrce�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[19]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Message sent.
[xUnit.net 00:00:09.39]       �[41m�[30mfail�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[6]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Error starting gRPC call.
[xUnit.net 00:00:09.39]             System.Net.Http.HttpRequestException: An error occurred while sending the request.
[xUnit.net 00:00:09.39]              ---> System.IO.IOException: The response ended prematurely.
[xUnit.net 00:00:09.39]                at System.Net.Http.HttpConnection.FillAsync(Boolean async)
[xUnit.net 00:00:09.39]                at System.Net.Http.HttpConnection.ReadNextResponseHeaderLineAsync(Boolean async, Boolean foldedHeadersAllowed)
[xUnit.net 00:00:09.39]                at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
[xUnit.net 00:00:09.39]                --- End of inner exception stack trace ---
[xUnit.net 00:00:09.39]                at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
[xUnit.net 00:00:09.39]                at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
[xUnit.net 00:00:09.39]                at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
[xUnit.net 00:00:09.39]                at System.Net.Http.DiagnosticsHandler.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
[xUnit.net 00:00:09.39]                at System.Net.Http.HttpClient.FinishSendAsync(ValueTask`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts, Boolean buffered, Boolean async, CancellationToken callerToken, Int64 timeoutTime)
[xUnit.net 00:00:09.39]                at Grpc.Net.Client.Internal.GrpcCall`2.RunCall(HttpRequestMessage request)
[xUnit.net 00:00:09.39]       �[40m�[37mdbug�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[8]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             gRPC call canceled.
[xUnit.net 00:00:09.39]       �[41m�[30mfail�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[3]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Call failed with gRPC error status. Status code: 'Internal', Message: 'Error starting gRPC call: An error occurred while sending the request.'.
[xUnit.net 00:00:09.39]       �[40m�[37mdbug�[39m�[22m�[49m: Grpc.Net.Client.Internal.GrpcCall[4]
[xUnit.net 00:00:09.39]             => GrpcMethodType:Unary GrpcUri:/grpc.testing.TestService/UnaryCall
[xUnit.net 00:00:09.39]             Finished gRPC call.
[xUnit.net 00:00:09.39]       ERROR: Unhandled exception. System.InvalidOperationException: Expected Unknown but got Internal.
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.Assert.AreEqual(Object expected, Object actual) in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\Assert.cs:line 47
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.InteropClient.RunSpecialStatusMessageAsync(TestServiceClient client) in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\InteropClient.cs:line 676
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.InteropClient.RunTestCaseAsync(IChannelWrapper channel, ClientOptions options) in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\InteropClient.cs:line 267
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.InteropClient.Run() in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\InteropClient.cs:line 139
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.InteropClient.<>c.<Run>b__7_1(ClientOptions options) in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\InteropClient.cs:line 131
[xUnit.net 00:00:09.39]       ERROR:    at CommandLine.ParserResultExtensions.WithParsed[T](ParserResult`1 result, Action`1 action)
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.InteropClient.Run(String[] args) in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\InteropClient.cs:line 119
[xUnit.net 00:00:09.39]       ERROR:    at InteropTestsClient.Program.Main(String[] args) in F:\workspace\_work\1\s\src\Grpc\test\testassets\InteropClient\Program.cs:line 33

Further technical details

See @JamesNK's comments: #24876 (comment)

[dougbu]

This is actually a platform or servers issue and it affects HttpClientHttp2InteropTests tests too. Changing the labels (test failures are almost never area-infrastructure)

Thanks for contacting us.
We're moving this issue to the Next sprint planning milestone for future evaluation / consideration. We will evaluate the request when we are planning the work for the next milestone. To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.