tcp三次握手后如何，传输数据

  

 static TcpClient m_tcpClient;

    static Thread m_readThread = null;



/// <summary>

    /// tcp 连接 发送数据

    /// </summary>

    /// <param name="strIp"></param>

    /// <returns></returns>

    public static string CommunicateTcp()

    {



        try

        {

            int Port = 80;//目标端口

            string Ip = "192.168.1.50";//目标ip

            IPAddress address = IPAddress.Parse(Ip);



            IPAddress myIp = Dns.GetHostEntry(Dns.GetHostName()).AddressList[0]; //得到本机ip 



            int myPort = 6010;//本机使用端口 



            IPEndPoint localEndPoint = new IPEndPoint(myIp, myPort);



            m_tcpClient = new TcpClient(localEndPoint);



            m_tcpClient.Connect(address, Port);



            if (m_readThread == null)

            {

                m_readThread = new Thread(ReceiveDataThread);

            }

            m_readThread.Start(); 







            NetworkStream ns = m_tcpClient.GetStream();



            if (true)

            {

                byte[] bytes = new byte[10];//建立缓冲区

                bytes[0] = Convert.ToByte('L');

                bytes[1] = Convert.ToByte('V');

                bytes[2] = Convert.ToByte('S');

                bytes[3] = Convert.ToByte('P');



                bytes[4] = Convert.ToByte('=');



                bytes[5] = Convert.ToByte('0');

                bytes[6] = Convert.ToByte('0');

                bytes[7] = Convert.ToByte('0');

                bytes[8] = Convert.ToByte('0');



                bytes[9] = Convert.ToByte('\0');





                // 创建跟ups连接的socket

                Socket ups_sok = m_tcpClient.Client;// new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);



                //// 接收远程UPS控制器的反馈数据                

                //IPEndPoint senderEP = new IPEndPoint(IPAddress.Any, 2353);

                //// 按照msdn的要求binding，此时我们作为服务端收数据。

                //ups_sok.Bind(senderEP);

                ups_sok.ReceiveTimeout = 15000;



                byte[] buffer = new Byte[256];



                // 发送数据到远程UPS控制器

                ns.Write(bytes, 0, bytes.Length);



                ups_sok.Receive(buffer);



                byte[] data = new byte[5];



                int bytesRead = ns.Read(data, 0, data.Length);//读取字节流 

            }



            ns.Close();



            m_tcpClient.Close();

        }

        catch (System.Exception e)

        {

            string strError = "发送失败:" + e.Message;

            return strError;

        }



        return "连接成功";

    }



    /// <summary>

    /// 接收数据线程

    /// </summary>

    public static void ReceiveDataThread()

    {

        Byte [] ReciveData = new Byte[1024];



        int len = 0;

        if (m_readThread ==null)

        {

            return;

        }

        bool _Continue = true;

        NetworkStream stream;

        int count;

        while (_Continue)

        {

            if (m_tcpClient.Connected)

                stream = m_tcpClient.GetStream();

            else

            {

                Thread.Sleep(50);

                continue;

            } 



            try

            {

                len = stream.Read(ReciveData, 0, ReciveData.Length);

                if (len != 0)

                {

                    _Continue = false;

                }

            }



            catch (Exception err)

            {



                CloseClientSocket();

            }

        }

    }