/// <summary>
 /// DisConnected事件
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="ev"></param>
 private void DisconnectedWork(WebSocketConnection sender, EventArgs ev)
 {
     _connections.Remove(sender);
     sender.Close();
 }
 /// <summary>
 /// DisConnected事件
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="ev"></param>
 private void DisconnectedWork(WebSocketConnection sender, EventArgs ev)
 {
     _connections.Remove(sender);
     sender.Close();
 }