private static async Task StopSessionAsync(EventPipeSession session)
{
// Cancel after a generous amount of time if process ended before command is sent.
using CancellationTokenSource cancellationSource = new(IpcClient.ConnectTimeout);
try
{
await session.StopAsync(cancellationSource.Token).ConfigureAwait(false);
}
catch (EndOfStreamException)
{
// If the app we're monitoring exits abruptly, this may throw in which case we just swallow the exception and exit gracefully.
}
// We may time out if the process ended before we sent StopTracing command. We can just exit in that case.
catch (TimeoutException)
{
}
// We may time out if the process ended before we sent StopTracing command. We can just exit in that case.
catch (OperationCanceledException)
{
}
// On Unix platforms, we may actually get a PNSE since the pipe is gone with the process, and Runtime Client Library
// does not know how to distinguish a situation where there is no pipe to begin with, or where the process has exited
// before collection started and got rid of a pipe that once existed.
// Since we are catching this at the end of a session we know that the pipe once existed (otherwise the exception would've
// been thrown at the beginning directly)
catch (PlatformNotSupportedException)
{
}
// On non-abrupt exits, the socket may be already closed by the runtime and we won't be able to send a stop request through it.
catch (ServerNotAvailableException)
{
}
}
