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我目前正在开发一个从套接字读取 dat 的应用程序。

我很好奇,如果我有一个readDone.WaitOne(600000)比正常超时更大的超时,如果由于回调方法中的异常而readDone.Set()在我的方法中从未调用过会发生什么?ReadCallBack

它是等待整个超时持续时间,还是通过处理在 ? 之外定义的异常继续执行主线程ReadcallBack

编辑

这是一个例子来解释我的意思:

        public void SendAndReceive(Message message)
    {
        try
        {
            IPAddress ipAddress = IPAddress.Parse(this.host.Address);
            IPEndPoint remoteEP = new IPEndPoint(ipAddress, this.host.Port);

            using (Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
            {
                client.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), client);
                connectDone.WaitOne(host.Timeout);

                message.State = MessageState.SENDING;
                Send(client, message.Request);

                if (sendDone.WaitOne(120000)) // TIMEOUT SET TO 2 MINUTE
                {
                    // Request sent successful. Now attempt to retrieve response.
                    message.State = MessageState.READING;
                    Receive(client);
                }
                else
                {
                    message.State = MessageState.SEND_ERROR;
                    message.ErrorMessage = "Timeout while sending request to socket.";
                }                    

                // Release the socket.
                client.Shutdown(SocketShutdown.Both);
                client.Close();
            }
        }
        catch (Exception ex)
        {
            LogManager.ExceptionHandler(ex);
            message.ErrorMessage = ex.Message;
            message.State = MessageState.EXCEPTION;
        }
    }


    private void Send(Socket client, String data)
    {
        byte[] byteData = Encoding.ASCII.GetBytes(data);
        System.IO.MemoryStream dataStream = new System.IO.MemoryStream();
        dataStream.WriteByte(1);
        dataStream.Write(byteData, 0, byteData.Length);
        dataStream.WriteByte(3);

        client.BeginSend(dataStream.GetBuffer(), 0, dataStream.GetBuffer().Length, 0, new AsyncCallback(SendCallback), client);
    }

    private void SendCallback(IAsyncResult ar)
    {
        try
        {
            var client = (Socket)ar.AsyncState;
            client.EndSend(ar);

            // Throw exception before .Set can is called
            throw new Exception("test");

            sendDone.Set();
        }
        catch (Exception ex)
        {
        }
    }

所以澄清一下:

sendDone.WaitOne(120000) 设置为 2 分钟后超时,这意味着 .Set() 在 2 分钟内没有被调用,主线程将继续执行。我的问题是,如果 SendCallBack 在调用 .Set() 之前存在异常,sendDone 是否仍会阻塞主线程 2 分钟,还是会自动跳转到 SendAndReceive 方法中的 try catch?

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1 回答 1

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所以我对此进行了测试,如果抛出异常,则 WaitOne() 被取消。

于 2013-06-03T23:22:54.013 回答