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When cancelling a build on the command line we occasionally see the following exception.

Unhandled exception. System.IO.IOException: Broken pipe
 ---> System.Net.Sockets.SocketException (32): Broken pipe
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   --- End of inner exception stack trace ---
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Xamarin.Android.Tasks.Aapt2Daemon.Aapt2DaemonStart()
   at System.Threading.Thread.StartHelper.Callback(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
Unhandled exception. System.IO.IOException: Broken pipe
 ---> System.Net.Sockets.SocketException (32): Broken pipe
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   --- End of inner exception stack trace ---
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Xamarin.Android.Tasks.Aapt2Daemon.Aapt2DaemonStart()
   at System.Threading.Thread.StartHelper.Callback(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
Unhandled exception. System.IO.IOException: Broken pipe
 ---> System.Net.Sockets.SocketException (32): Broken pipe
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   --- End of inner exception stack trace ---
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Xamarin.Android.Tasks.Aapt2Daemon.Aapt2DaemonStart()
   at System.Threading.Thread.StartHelper.Callback(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)

This happens because we are calling Stream.WriteLine after the process has already exited. So lets catch this exception and ignore it.

When cancelling a build on the command line we occasionally
see the following exception.

```
Unhandled exception. System.IO.IOException: Broken pipe
 ---> System.Net.Sockets.SocketException (32): Broken pipe
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   --- End of inner exception stack trace ---
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Xamarin.Android.Tasks.Aapt2Daemon.Aapt2DaemonStart()
   at System.Threading.Thread.StartHelper.Callback(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
Unhandled exception. System.IO.IOException: Broken pipe
 ---> System.Net.Sockets.SocketException (32): Broken pipe
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   --- End of inner exception stack trace ---
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Xamarin.Android.Tasks.Aapt2Daemon.Aapt2DaemonStart()
   at System.Threading.Thread.StartHelper.Callback(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
Unhandled exception. System.IO.IOException: Broken pipe
 ---> System.Net.Sockets.SocketException (32): Broken pipe
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   --- End of inner exception stack trace ---
   at System.IO.Pipes.PipeStream.WriteCore(ReadOnlySpan`1 buffer)
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Xamarin.Android.Tasks.Aapt2Daemon.Aapt2DaemonStart()
   at System.Threading.Thread.StartHelper.Callback(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
```

This happens because we are calling `Stream.WriteLine` after the process
has already exited. So lets catch this exception and ignore it.
@dellis1972
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Test failures are the usual network failures 😠
System.Net.Http.HttpRequestException : net_http_message_not_success_statuscode_reason,

@dellis1972 dellis1972 merged commit ad95b98 into dotnet:main Jun 22, 2023
@dellis1972 dellis1972 deleted the aapt2daemon branch June 22, 2023 16:01
grendello added a commit to grendello/xamarin-android that referenced this pull request Jun 23, 2023
* main:
  Bump to google/bundletool@f17ce94a (dotnet#8135)
  [Xamarin.Android.Build.Tasks] Handle IOException in Aapt2Daemon (dotnet#8130)
  [tests] don't set `/uses-sdk@android:targetSdkVersion=34` by default (dotnet#8138)
grendello added a commit to grendello/xamarin-android that referenced this pull request Jun 26, 2023
* main:
  Bump to google/bundletool@f17ce94a (dotnet#8135)
  [Xamarin.Android.Build.Tasks] Handle IOException in Aapt2Daemon (dotnet#8130)
  [tests] don't set `/uses-sdk@android:targetSdkVersion=34` by default (dotnet#8138)
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3 participants