private async Task <WebSocketMessageEnvelope> SendAsync(WebSocketMessageEnvelope envelope)
{
var json = envelope.ToJson();
Logger?.DebugFormat("Sending JSON over web socket: {0}", json);
var buffer = System.Text.Encoding.UTF8.GetBytes(json);
var cts = new CancellationTokenSource(_sendTimeoutSec);
if (string.IsNullOrEmpty(envelope.Cid))
{
await _adapter.SendAsync(new ArraySegment <byte>(buffer), true, cts.Token);
return(null); // No response required.
}
var completer = new TaskCompletionSource <WebSocketMessageEnvelope>();
lock (_responsesLock)
{
_responses[envelope.Cid] = completer;
}
cts.Token.Register(() => {
lock (_responsesLock)
{
if (_responses.ContainsKey(envelope.Cid))
{
_responses.Remove(envelope.Cid);
}
}
completer.TrySetCanceled();
});
await _adapter.SendAsync(new ArraySegment <byte>(buffer), true, cts.Token);
return(await completer.Task);
}
