c# - networkStream.Read 被阻塞

Question

我正在编写一个简单的应用程序，它将与服务器连接。但是我也想发送简单的聊天命令（见Console.ReadLine下文）。但是，此脚本无法访问， string Message = Console.ReadLine();因为它在bytesRead = clientStream.Read(message, 0, 4096);.

我想继续这个脚本，但是如果有字节传入，它应该处理它们（就像它现在正在做的那样），如果没有字节传入，它应该通过脚本并等待用户输入）。如何做到这一点？

        TcpClient tcpClient = (TcpClient)client;
        NetworkStream clientStream = tcpClient.GetStream();

        byte[] message = new byte[4096];
        int bytesRead;

        while (true)
        {
            bytesRead = 0;

            try
            {
                // Blocks until a client sends a message                    
                bytesRead = clientStream.Read(message, 0, 4096);
            }
            catch (Exception)
            {
                // A socket error has occured
                break;
            }

            if (bytesRead == 0)
            {
                // The client has disconnected from the server
                break;
            }

            // Message has successfully been received
            ASCIIEncoding encoder = new ASCIIEncoding();

            // Output message
            Console.WriteLine("To: " + tcpClient.Client.LocalEndPoint);
            Console.WriteLine("From: " + tcpClient.Client.RemoteEndPoint);
            Console.WriteLine(encoder.GetString(message, 0, bytesRead));

            // Return message
            string Message = Console.ReadLine();
            if (Message != null)
            {
                byte[] buffer = encoder.GetBytes(Message);
                clientStream.Write(buffer, 0, buffer.Length);
                clientStream.Flush();
            }

Answer 1

您可以尝试使用DataAvailable属性。它会告诉你套接字上是否有任何东西在等待。如果它是假的，请不要Read拨打电话。