SignalR client hanging on reconnections #63333
Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
Using Microsoft.AspNetCore.SignalR.Client v9.0.8 we are seeing issues during the reconnection process. If the SignalR connection is lost automatic reconnection is successful most of the time. But occasional it will fail to reconnect and the Hub Connection seems to hang.
Other parts of the application continue as normal and only a restart of the application resolves the issue.
This is running on Debian GNU/Linux 12 (bookworm)
Version: 6.1.0-38-cloud-amd64
From the diagnostic file HubConnection log
07:00:14.4452|DEBUG|Processing 164 byte message from server.
07:00:15.8458|ERROR|The server connection was terminated with an error. System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake.
at System.Net.WebSockets.ManagedWebSocket.ThrowEOFUnexpected()
at System.Net.WebSockets.ManagedWebSocket.EnsureBufferContainsAsync(Int32 minimumRequiredBytes, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
at System.Net.WebSockets.ManagedWebSocket.ReceiveAsyncPrivate[TResult](Memory`1 payloadBuffer, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
at Microsoft.AspNetCore.Http.Connections.Client.Internal.WebSocketsTransport.StartReceiving(WebSocket socket)
at System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result)
at System.IO.Pipelines.Pipe.GetReadAsyncResult()
at Microsoft.AspNetCore.SignalR.Client.HubConnection.ReceiveLoop(ConnectionState connectionState)
07:00:15.8458|DEBUG|Canceling all outstanding invocations.
07:00:15.8458|ERROR|Connection is shutting down due to an error. System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake.
at System.Net.WebSockets.ManagedWebSocket.ThrowEOFUnexpected()
at System.Net.WebSockets.ManagedWebSocket.EnsureBufferContainsAsync(Int32 minimumRequiredBytes, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
at System.Net.WebSockets.ManagedWebSocket.ReceiveAsyncPrivate[TResult](Memory`1 payloadBuffer, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
at Microsoft.AspNetCore.Http.Connections.Client.Internal.WebSocketsTransport.StartReceiving(WebSocket socket)
at System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result)
at System.IO.Pipelines.Pipe.GetReadAsyncResult()
at Microsoft.AspNetCore.SignalR.Client.HubConnection.ReceiveLoop(ConnectionState connectionState)
07:00:15.8458|DEBUG|Invoking the Closed event handler.
07:00:25.8554|DEBUG|Starting HubConnection.
.... No more events from here
From the HttpConnection log
06:59:13.9827|DEBUG|Disposing HttpConnection.
06:59:13.9853|INFO|HttpConnection Disposed.
06:59:24.0214|DEBUG|Starting HttpConnection.
06:59:24.0245|DEBUG|Starting transport 'WebSockets' with Url: https://...
06:59:24.2330|DEBUG|Transport 'WebSockets' started.
06:59:24.2330|INFO|HttpConnection Started.
07:00:15.8458|DEBUG|Disposing HttpConnection.
07:00:15.8458|INFO|HttpConnection Disposed.
07:00:25.8554|DEBUG|Starting HttpConnection.
07:00:25.8554|DEBUG|Starting transport 'WebSockets' with Url: https://....
... No more events from here
Expected Behavior
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Steps To Reproduce
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Exceptions (if any)
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.NET Version
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Anything else?
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