internal override async Task StartPing()
{
_lastPong = DateTime.Now.Add(_pingTimeout);
_pingInterval = TimeSpan.FromMilliseconds(Math.Max(500, _pingTimeout.TotalMilliseconds / 2));
while (_connection.IsConnected)
{
await Task.Delay(_pingInterval).ConfigureAwait(false);
try
{
var now = DateTime.Now;
if (_lastPong.Add(_pingTimeout) < now)
{
_connection.Close(WebSocketCloseReasons.GoingAway);
}
else
{
((UInt64)now.Ticks).ToBytes(_pingBuffer.Array, _pingBuffer.Offset);
_connection.WriteInternal(_pingBuffer, 8, true, false, WebSocketFrameOption.Ping, WebSocketExtensionFlags.None);
}
}
catch (Exception ex)
{
DebugLog.Fail("LatencyControlPing.StartPing", ex);
_connection.Close(WebSocketCloseReasons.ProtocolError);
}
}
}
internal override async Task StartPing()
{
_lastActivity = DateTime.Now.Add(_pingTimeout);
_pingInterval = TimeSpan.FromMilliseconds(Math.Max(500, _pingTimeout.TotalMilliseconds / 2));
while (_connection.IsConnected)
{
await Task.Delay(_pingInterval).ConfigureAwait(false);
try
{
var now = DateTime.Now;
if (_lastActivity.Add(_pingTimeout) < now)
{
_connection.Close(WebSocketCloseReasons.GoingAway);
}
else if (_lastActivity.Add(_pingInterval) < now)
{
_connection.WriteInternal(_pingBuffer, 0, true, false, WebSocketFrameOption.Ping, WebSocketExtensionFlags.None);
}
}
catch (Exception ex)
{
DebugLog.Fail("BandwidthSavingPing.StartPing", ex);
_connection.Close(WebSocketCloseReasons.ProtocolError);
}
}
}
internal void Close(WebSocketCloseReasons reason)
{
try
{
if (Interlocked.CompareExchange(ref _isClosed, 1, 0) == 1)
{
return;
}
((UInt16)reason).ToBytesBackwards(_closeBuffer.Array, _closeBuffer.Offset);
WriteInternal(_closeBuffer, 2, true, false, WebSocketFrameOption.ConnectionClose, WebSocketExtensionFlags.None);
_clientStream.Close();
}
catch (Exception ex)
{
DebugLog.Fail("WebSocketConnectionRfc6455.Close", ex);
}
}
private async Task WorkAsync()
{
while (!_cancel.IsCancellationRequested)
{
try
{
await _semaphore.WaitAsync(_cancel.Token).ConfigureAwait(false);
var socket = await _sockets.ReceiveAsync(_cancel.Token).ConfigureAwait(false);
Task.Run(() => NegotiateWebSocket(socket));
}
catch (TaskCanceledException)
{
}
catch (Exception ex)
{
DebugLog.Fail("HttpNegotiationQueue.WorkAsync", ex);
_cancel.Cancel();
}
}
}
