private Task CloseHandler(object Sender, IqEventArgs e)
{
string StreamId = XML.Attribute(e.Query, "sid");
string Key = e.From + " " + StreamId;
IncomingStream Input;
OutgoingStream Output;
lock (this.synchObject)
{
if (this.cache is null)
{
Input = null;
}
else if (this.cache.TryGetValue(Key, out Input))
{
this.cache.Remove(Key);
}
else
{
Input = null;
}
}
if (Input is null)
{
lock (this.output)
{
if (!this.output.TryGetValue(StreamId, out Output))
{
throw new ItemNotFoundException("Stream not recognized.", e.Query);
}
this.output.Remove(StreamId);
}
Output.Abort();
Output.Dispose();
}
else
{
if (Input.BlocksMissing)
{
Input.Closed(CloseReason.Aborted);
}
else
{
Input.Closed(CloseReason.Done);
}
Input.Dispose();
}
e.IqResult(string.Empty);
return(Task.CompletedTask);
}
/// <summary>
/// Immediately kill the connection and poison the request body stream with an error.
/// </summary>
public void Abort(ConnectionAbortedException abortReason)
{
if (Interlocked.Exchange(ref _requestAborted, 1) != 0)
{
return;
}
// Abort output prior to calling OnIOCompleted() to give the transport the chance to complete the input
// with the correct error and message.
Output.Abort(abortReason);
OnInputOrOutputCompleted();
PoisonRequestBodyStream(abortReason);
}