Question

以下是代码段。我试图分别处理上游和下游。但遗憾的是，在handleDownStream之后，handleUpStream（）永远不会发生。

如果我删除handleDownStream，那么handleupstream的一切都很好。我在handleDownStream中缺少一些东西，我不知道是什么。

    public void run()
    {
        while (running)
        {
            if (ClientPool == null)
                continue;
            foreach (Client c in ClientPool)
            {
                NetworkStream networkStream = c.getTcpClient().GetStream();
                handleDownStream(c, networkStream);
                handleUpstream(c, networkStream);
            }
        }
    }

    public void handleDownStream(Client c, NetworkStream networkstream)
    {
        try
        {
            networkstream.Read(bytesFrom, 0, (int)c.getTcpClient().ReceiveBufferSize);
            dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom);
            Console.WriteLine("Message From: " + c.getClientIp() + " : " + dataFromClient);
            dataFromClient = null;
            bytesFrom = new byte[10025];
        }
        catch (Exception e)
        { 
            // I tried to see if there was some sort of exception here that was a silent killer. 
            Console.WriteLine(e.ToString());
            return;
        }
    }

    public void handleUpstream(Client c, NetworkStream networkstream)
    {
        // The below never happens.
        Console.WriteLine("this lol");
        if (c.getTimeSinceLastMessage() > 30000 && c.getPinged())
        {
            Console.WriteLine("Removing Client From Pool, " + c.getClientIp());
            removeClientFromPool(c);
            return;
        }
        if (c.getTimeSinceLastMessage() > 15000 && c.getPinged() == false)
        {
            Console.WriteLine("Sending ping to Client, " + c.getClientIp());
            c.switchPinged();
            bytesToSend = Encoding.ASCII.GetBytes("ping");
            networkstream.Write(bytesToSend, 0, bytesToSend.Length);
            networkstream.Flush();
            bytesToSend = null;
        }
    }

Answer 1

这是令人尴尬的......

除了检查它之外，您还可以阅读，您需要检查是否有数据可供阅读...对于那些像我这样的新人或忘记在这里检查更新的代码。很明显，如果你调用networkstream.read（），它会等待一条消息（它与该线程同步）。

以下是需要查看发生情况的修订工作代码。

public void run()
    {
        while (running)
        {
            if (ClientPool == null)
                continue;
            foreach (Client c in ClientPool)
            {
                NetworkStream networkStream = c.getTcpClient().GetStream();
                if (networkStream.CanRead)
                    handleDownStream(c, networkStream);
                handleUpstream(c, networkStream);
            }
        }
    }

    public void handleDownStream(Client c, NetworkStream networkstream)
    {
        if (networkstream.DataAvailable == false)
            return;

        try
        {
            networkstream.Read(bytesFrom, 0, (int)c.getTcpClient().ReceiveBufferSize);
            dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom);
            Console.WriteLine("Message From: " + c.getClientIp() + " : " + dataFromClient);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
            return;
        }
    }

    public void handleUpstream(Client c, NetworkStream networkstream)
    {
        if (c.getTimeSinceLastMessage() > 30000 && c.getPinged())
        {
            Console.WriteLine("Removing Client From Pool, " + c.getClientIp());
            removeClientFromPool(c);
            return;
        }
        if (c.getTimeSinceLastMessage() > 15000 && c.getPinged() == false)
        {
            Console.WriteLine("Sending ping to Client, " + c.getClientIp());
            c.switchPinged();
            bytesToSend = Encoding.ASCII.GetBytes("ping");
            networkstream.Write(bytesToSend, 0, bytesToSend.Length);
            networkstream.Flush();
            bytesToSend = null;
        }
    }

多客户端服务器表现奇怪

1 个答案: