public void SendToAsync(string sessionKey, byte[] data)
{
if (!IsListening)
{
throw new InvalidOperationException("The server has stopped to listen.");
}
TcpSocketSession session = null;
if (_sessions.TryGetValue(sessionKey, out session))
{
_server.BeginSendTo(session, data);
}
else
{
_log.WarnFormat("SendToAsync, cannot find target client [{0}].", sessionKey);
}
}