private async Task <bool> MessageWriteAsync(ClientMetadata md, byte[] data, WebSocketMessageType msgType)
{
string header = "[WatsonWsServer " + md.IpPort + "] ";
try
{
#region Send-Message
// Cannot have two simultaneous SendAsync calls so use a
// semaphore to block the second until the first has completed
await md.SendLock.WaitAsync(md.TokenSource.Token);
try
{
await md.Ws.SendAsync(new ArraySegment <byte>(data, 0, data.Length), msgType, true, md.TokenSource.Token);
}
finally
{
md.SendLock.Release();
}
_Stats.IncrementSentMessages();
_Stats.AddSentBytes(data.Length);
return(true);
#endregion
}
catch (OperationCanceledException oce)
{
Logger?.Invoke(header + "disconnected (canceled): " + oce.Message);
}
catch (WebSocketException wse)
{
Logger?.Invoke(header + "disconnected (websocket exception): " + wse.Message);
}
catch (Exception e)
{
Logger?.Invoke(header + "disconnected due to exception: " + Environment.NewLine + e.ToString());
}
return(false);
}
private async Task <bool> MessageWriteAsync(byte[] data, WebSocketMessageType msgType, CancellationToken token)
{
bool disconnectDetected = false;
using (CancellationTokenSource linkedCts = CancellationTokenSource.CreateLinkedTokenSource(_Token, token))
{
try
{
if (_ClientWs == null || _ClientWs.State != WebSocketState.Open)
{
Logger?.Invoke(_Header + "not connected");
disconnectDetected = true;
return(false);
}
await _SendLock.WaitAsync(_Token);
try
{
await _ClientWs.SendAsync(new ArraySegment <byte>(data, 0, data.Length), msgType, true, token);
}
catch { }
finally
{
_SendLock.Release();
}
if (EnableStatistics)
{
_Stats.IncrementSentMessages();
_Stats.AddSentBytes(data.Length);
}
return(true);
}
catch (TaskCanceledException)
{
if (_Token.IsCancellationRequested)
{
Logger?.Invoke(_Header + "canceled");
disconnectDetected = true;
}
else if (token.IsCancellationRequested)
{
Logger?.Invoke(_Header + "message send canceled");
}
return(false);
}
catch (OperationCanceledException)
{
if (_Token.IsCancellationRequested)
{
Logger?.Invoke(_Header + "canceled");
disconnectDetected = true;
}
else if (token.IsCancellationRequested)
{
Logger?.Invoke(_Header + "message send canceled");
}
return(false);
}
catch (WebSocketException)
{
Logger?.Invoke(_Header + "websocket disconnected");
disconnectDetected = true;
return(false);
}
catch (ObjectDisposedException)
{
Logger?.Invoke(_Header + "disposed");
disconnectDetected = true;
return(false);
}
catch (SocketException)
{
Logger?.Invoke(_Header + "socket disconnected");
disconnectDetected = true;
return(false);
}
catch (InvalidOperationException)
{
Logger?.Invoke(_Header + "disconnected due to invalid operation");
disconnectDetected = true;
return(false);
}
catch (IOException)
{
Logger?.Invoke(_Header + "IO disconnected");
disconnectDetected = true;
return(false);
}
catch (Exception e)
{
Logger?.Invoke(_Header + "exception: " + Environment.NewLine + e.ToString());
disconnectDetected = true;
return(false);
}
finally
{
if (disconnectDetected)
{
Dispose();
ServerDisconnected?.Invoke(this, EventArgs.Empty);
InternalServerDisconnected?.Invoke(this, EventArgs.Empty);
}
}
}
}
private async Task <bool> MessageWriteAsync(ClientMetadata md, byte[] data, WebSocketMessageType msgType, CancellationToken token)
{
string header = "[WatsonWsServer " + md.IpPort + "] ";
CancellationToken[] tokens = new CancellationToken[3];
tokens[0] = _Token;
tokens[1] = token;
tokens[2] = md.TokenSource.Token;
using (CancellationTokenSource linkedCts = CancellationTokenSource.CreateLinkedTokenSource(tokens))
{
try
{
#region Send-Message
await md.SendLock.WaitAsync(md.TokenSource.Token).ConfigureAwait(false);
try
{
await md.Ws.SendAsync(new ArraySegment <byte>(data, 0, data.Length), msgType, true, linkedCts.Token).ConfigureAwait(false);
}
finally
{
md.SendLock.Release();
}
_Stats.IncrementSentMessages();
_Stats.AddSentBytes(data.Length);
return(true);
#endregion
}
catch (TaskCanceledException)
{
if (_Token.IsCancellationRequested)
{
Logger?.Invoke(header + "server canceled");
}
else if (token.IsCancellationRequested)
{
Logger?.Invoke(header + "message send canceled");
}
else if (md.TokenSource.Token.IsCancellationRequested)
{
Logger?.Invoke(header + "client canceled");
}
}
catch (OperationCanceledException)
{
if (_Token.IsCancellationRequested)
{
Logger?.Invoke(header + "canceled");
}
else if (token.IsCancellationRequested)
{
Logger?.Invoke(header + "message send canceled");
}
else if (md.TokenSource.Token.IsCancellationRequested)
{
Logger?.Invoke(header + "client canceled");
}
}
catch (ObjectDisposedException)
{
Logger?.Invoke(header + "disposed");
}
catch (WebSocketException)
{
Logger?.Invoke(header + "websocket disconnected");
}
catch (SocketException)
{
Logger?.Invoke(header + "socket disconnected");
}
catch (InvalidOperationException)
{
Logger?.Invoke(header + "disconnected due to invalid operation");
}
catch (IOException)
{
Logger?.Invoke(header + "IO disconnected");
}
catch (Exception e)
{
Logger?.Invoke(header + "exception: " + Environment.NewLine + e.ToString());
}
}
return(false);
}
