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Azure / azure-signalr

Azure SignalR Service SDK for .NET

Home Page:https://aka.ms/signalr-service

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OperationCanceledException from Microsoft.Azure.SignalR.ServiceConnection when app restarts

vicancy opened this issue · comments

commented

Describe the bug

Facing OperationCanceledException from Microsoft.Azure.SignalR.ServiceConnection specially during every deployment or webapp restart or sometimes we have seen this exception coming even when deployment or restart is not done.

And further there are 2 subtypes :

  1. Error while skipping handshake response
  2. Error while processing messages

The operation was canceled.

Exception:
System.OperationCanceledException: The operation was canceled.
at System.Threading.CancellationToken.ThrowOperationCanceledException()
at System.IO.Pipelines.Pipe.GetReadAsyncResult()
at System.IO.Pipelines.Pipe.DefaultPipeReader.GetResult(Int16 token)
at Microsoft.Azure.SignalR.ServiceConnection.SkipHandshakeResponse(ClientConnectionContext connection, CancellationToken token)

Solution

we can silently fail the connection instead of throwing out the exception

To Reproduce

Exceptions (if any)

Further technical details

  • Your Azure SignalR SDK version
  • Your Server ASPNETCORE version or Assembly version of Microsoft.AspNetCore.SignalR
  • Your SignalR Client SDK version