ModelContextProtocol.AspNetCore.Tests.StreamableHttpServerConformanceTests.McpServer_UsedOutOfScope_CanSendNotifications failed in rolling build #1237
Description
See https://github.com/modelcontextprotocol/csharp-sdk/actions/runs/21529461255/job/62041474097
Failed ModelContextProtocol.AspNetCore.Tests.StreamableHttpServerConformanceTests.McpServer_UsedOutOfScope_CanSendNotifications [13 s]
Error Message:
System.Threading.Tasks.TaskCanceledException : The request was canceled due to the configured HttpClient.Timeout of 10 seconds elapsing.
---- System.TimeoutException : The operation was canceled.
-------- System.Threading.Tasks.TaskCanceledException : The operation was canceled.
------------ System.InvalidOperationException : Reading is not allowed after reader was completed.
Stack Trace:
at System.Net.Http.HttpClient.HandleFailure(Exception e, Boolean telemetryStarted, HttpResponseMessage response, CancellationTokenSource cts, CancellationToken cancellationToken, CancellationTokenSource pendingRequestsCts)
at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
at ModelContextProtocol.AspNetCore.Tests.StreamableHttpServerConformanceTests.CallInitializeAndValidateAsync() in /_/tests/ModelContextProtocol.AspNetCore.Tests/StreamableHttpServerConformanceTests.cs:line 712
at ModelContextProtocol.AspNetCore.Tests.StreamableHttpServerConformanceTests.McpServer_UsedOutOfScope_CanSendNotifications() in /_/tests/ModelContextProtocol.AspNetCore.Tests/StreamableHttpServerConformanceTests.cs:line 595
--- End of stack trace from previous location ---
----- Inner Stack Trace -----
----- Inner Stack Trace -----
at System.Net.Http.HttpConnection.ChunkedEncodingReadStream.CopyToAsyncCore(Stream destination, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionResponseContent.<SerializeToStreamAsync>g__Impl|6_0(Stream stream, CancellationToken cancellationToken)
at System.Net.Http.HttpContent.LoadIntoBufferAsyncCore(Task serializeToStreamTask, MemoryStream tempBuffer)
at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
----- Inner Stack Trace -----
at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoReadingAllowed()
at System.IO.Pipelines.Pipe.AdvanceReader(SequencePosition& consumed, SequencePosition& examined)
at System.IO.Pipelines.Pipe.AdvanceReader(SequencePosition& consumed)
at System.IO.Pipelines.Pipe.DefaultPipeReader.AdvanceTo(SequencePosition consumed)
at System.IO.Pipelines.PipeReaderStream.HandleReadResult(ReadResult result, Span`1 buffer)
at System.IO.Pipelines.PipeReaderStream.HandleReadResult(ReadResult result, Span`1 buffer)
at System.IO.Pipelines.PipeReaderStream.ReadAsyncInternal(Memory`1 buffer, CancellationToken cancellationToken)
at ModelContextProtocol.AspNetCore.Tests.Utils.KestrelInMemoryConnection.DuplexStream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken) in /_/tests/ModelContextProtocol.AspNetCore.Tests/Utils/KestrelInMemoryConnection.cs:line 82
at System.Net.Http.HttpConnection.FillAsync(Boolean async)
at System.Net.Http.HttpConnection.ChunkedEncodingReadStream.CopyToAsyncCore(Stream destination, CancellationToken cancellationToken)
Standard Output Messages:
| [2026-01-30T20:26:01] Microsoft.Extensions.Hosting.Internal.Host Debug: Hosting starting
| [2026-01-30T20:26:02] Microsoft.AspNetCore.Server.Kestrel Debug: No listening endpoints were configured. Binding to http://localhost:5000 by default.
| [2026-01-30T20:26:02] Microsoft.Hosting.Lifetime Information: Now listening on: http://localhost:5000
| [2026-01-30T20:26:02] Microsoft.AspNetCore.Hosting.Diagnostics Debug: Loaded hosting startup assembly ModelContextProtocol.AspNetCore.Tests
| [2026-01-30T20:26:02] Microsoft.Hosting.Lifetime Information: Application started. Press Ctrl+C to shut down.
| [2026-01-30T20:26:02] Microsoft.Hosting.Lifetime Information: Hosting environment: Production
| [2026-01-30T20:26:02] Microsoft.Hosting.Lifetime Information: Content root path: D:\a\csharp-sdk\csharp-sdk\artifacts\bin\ModelContextProtocol.AspNetCore.Tests\Debug\net9.0
| [2026-01-30T20:26:02] Microsoft.Extensions.Hosting.Internal.Host Debug: Hosting started
| [2026-01-30T20:26:02] Microsoft.AspNetCore.Server.Kestrel.Connections Debug: Connection id "37d67aa38e8247dc9187e7b404df211a" accepted.
| [2026-01-30T20:26:02] Microsoft.AspNetCore.Server.Kestrel.Connections Debug: Connection id "37d67aa38e8247dc9187e7b404df211a" started.
| [2026-01-30T20:26:03] Microsoft.AspNetCore.Hosting.Diagnostics Information: Request starting HTTP/1.1 POST http://localhost:5000/ - application/json;+charset=utf-8 170
| [2026-01-30T20:26:03] Microsoft.AspNetCore.Routing.Matching.DfaMatcher Debug: 1 candidate(s) found for the request path '/'
| [2026-01-30T20:26:03] Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware Debug: Request matched endpoint 'MCP Streamable HTTP | HTTP: POST /'
| [2026-01-30T20:26:03] Microsoft.AspNetCore.Routing.EndpointMiddleware Information: Executing endpoint 'MCP Streamable HTTP | HTTP: POST /'
| [2026-01-30T20:26:05] Microsoft.AspNetCore.Server.Kestrel Debug: Connection id "37d67aa38e8247dc9187e7b404df211a", Request id "37d67aa38e8247dc9187e7b404df211a:00000001": started reading request body.
| [2026-01-30T20:26:05] Microsoft.AspNetCore.Server.Kestrel Debug: Connection id "37d67aa38e8247dc9187e7b404df211a", Request id "37d67aa38e8247dc9187e7b404df211a:00000001": done reading request body.
| [2026-01-30T20:26:05] ModelContextProtocol.Server.McpServer Debug: Server (StreamableHttpServerConformanceTests 73) read JsonRpcRequest message from channel.
| [2026-01-30T20:26:05] ModelContextProtocol.Server.McpServer Information: Server (StreamableHttpServerConformanceTests 73) method 'initialize' request handler called.
| [2026-01-30T20:26:05] ModelContextProtocol.Server.McpServer Debug: Server (StreamableHttpServerConformanceTests 73), Client (IntegrationTestClient 1.0.0) sending message.
| [2026-01-30T20:26:12] ModelContextProtocol.Server.McpServer Information: Server (StreamableHttpServerConformanceTests 73), Client (IntegrationTestClient 1.0.0) method 'initialize' request handler completed in 31.3835ms.
| [2026-01-30T20:26:12] Microsoft.AspNetCore.Routing.EndpointMiddleware Information: Executed endpoint 'MCP Streamable HTTP | HTTP: POST /'
| [2026-01-30T20:26:12] Microsoft.AspNetCore.Server.Kestrel.Connections Debug: Connection id "37d67aa38e8247dc9187e7b404df211a" completed keep alive response.
| [2026-01-30T20:26:12] Microsoft.AspNetCore.Hosting.Diagnostics Information: Request finished HTTP/1.1 POST http://localhost:5000/ - 200 - text/event-stream 9596.0900ms
| [2026-01-30T20:26:12] Microsoft.AspNetCore.Server.Kestrel.Connections Debug: Connection id "37d67aa38e8247dc9187e7b404df211a" disconnecting.
| [2026-01-30T20:26:12] Microsoft.AspNetCore.Server.Kestrel.Connections Debug: Connection id "37d67aa38e8247dc9187e7b404df211a" stopped.