public async Task SendAsync(PacketReader reader) // .Net 4.5
    改成
    public void SendAsync(PacketReader reader) // 都可以
    {
      ....
      try
      {
        await this._socket.SendTaskAsync(buffer);
        改成
        this._socket.SendTaskAsync(buffer).Wait();
      }
      catch (Exception ex1)
      {
        ....
        return;
      }
    }

    public async Task ReceiveAsync() // .Net 4.5
    改成
    public async Task ReceiveAsync() // 都可以
    {
      ....
      try
      {
        int taskAsync = await this._socket.ReceiveTaskAsync(receiveBuffer);
        改成
        this._socket.ReceiveTaskAsync(receiveBuffer).Wait();
      }
      catch (Exception ex)
      {
        ....
        return;
      }
    }