private async Task Close()
{
if (Interlocked.Exchange(ref _state, _disposed) == _disposed)
{
return;
}
try
{
if (_keepAliveTracker != null)
{
_keepAliveTracker.Dispose();
}
if (_keepAliveTimeoutTimer != null)
{
_keepAliveTimeoutTimer.Dispose();
}
if (_closingTimeoutTimer != null)
{
_closingTimeoutTimer.Dispose();
}
if (_stream != null)
{
_stream.Dispose();
_stream = null;
}
if (_tcpClient != null && _tcpClient.Connected)
{
_tcpClient.Dispose();
_tcpClient = null;
}
}
catch (Exception) { }
if (_receiveBuffer != null)
{
_bufferManager.ReturnBuffer(_receiveBuffer);
}
if (_sessionBuffer != null)
{
_bufferManager.ReturnBuffer(_sessionBuffer);
}
_log.DebugFormat("Session closed for [{0}] on [{1}] in dispatcher [{2}] with session count [{3}].",
this.RemoteEndPoint,
DateTime.UtcNow.ToString(@"yyyy-MM-dd HH:mm:ss.fffffff"),
_module.GetType().Name,
this.Server.SessionCount - 1);
try
{
await _module.OnSessionClosed(this);
}
catch (Exception ex)
{
HandleUserSideError(ex);
}
}
private void InternalClose(bool shallNotifyUserSide)
{
if (Interlocked.Exchange(ref _state, _disposed) == _disposed)
{
return;
}
try
{
if (_keepAliveTracker != null)
{
_keepAliveTracker.Dispose();
}
if (_keepAliveTimeoutTimer != null)
{
_keepAliveTimeoutTimer.Dispose();
}
if (_closingTimeoutTimer != null)
{
_closingTimeoutTimer.Dispose();
}
if (_stream != null)
{
_stream.Dispose();
_stream = null;
}
if (_tcpClient != null && _tcpClient.Connected)
{
_tcpClient.Close();
_tcpClient = null;
}
}
catch (Exception) { }
if (_receiveBuffer != null)
{
_bufferManager.ReturnBuffer(_receiveBuffer);
}
_receiveBufferOffset = 0;
if (shallNotifyUserSide)
{
_log(string.Format("Disconnected from server [{0}] on [{1}].",
this.RemoteEndPoint, DateTime.UtcNow.ToString(@"yyyy-MM-dd HH:mm:ss.fffffff")));
try
{
RaiseServerDisconnected();
}
catch (Exception ex)
{
HandleUserSideError(ex);
}
}
}
private void Clean()
{
try
{
try
{
if (_keepAliveTracker != null)
{
_keepAliveTracker.StopTimer();
_keepAliveTracker.Dispose();
}
}
catch { }
try
{
if (_keepAliveTimeoutTimer != null)
{
_keepAliveTimeoutTimer.Change(Timeout.Infinite, Timeout.Infinite);
_keepAliveTimeoutTimer.Dispose();
}
}
catch { }
try
{
if (_closingTimeoutTimer != null)
{
_closingTimeoutTimer.Change(Timeout.Infinite, Timeout.Infinite);
_closingTimeoutTimer.Dispose();
}
}
catch { }
try
{
if (_stream != null)
{
_stream.Dispose();
}
}
catch { }
try
{
if (_tcpClient != null)
{
_tcpClient.Dispose();
}
}
catch { }
}
catch { }
finally
{
_keepAliveTracker = null;
_keepAliveTimeoutTimer = null;
_closingTimeoutTimer = null;
_stream = null;
_tcpClient = null;
}
if (_receiveBuffer != default(ArraySegment <byte>))
{
_bufferManager.ReturnBuffer(_receiveBuffer);
}
_receiveBuffer = default(ArraySegment <byte>);
_receiveBufferOffset = 0;
}