C# 網絡編程 TcpListener

1.服務斷代碼

 public partial class Server : Form
    {

        private bool lk = true;

        public Server()
        {
            InitializeComponent();
            TextBox.CheckForIllegalCrossThreadCalls = false;
        }



        private void button1_Click(object sender, EventArgs e)
        {
            IPAddress ip = IPAddress.Parse(textBox1.Text);

            TcpListener server = new TcpListener(ip, int.Parse(textBox2.Text));
            server.Start();

            TaskFactory tasks = new TaskFactory();
            string ipaddress = string.Empty;
            TcpClient client = null;
            while (lk)
            {
                Console.WriteLine("等待連接。。。");
                client = server.AcceptTcpClient();

                tasks.StartNew(() => HandleClient(client, ipaddress)).Wait();
            }
        }

        private void HandleClient(TcpClient tcpclient, string ipadd)
        {

            lock (tcpclient)
            {
                if (tcpclient == null)
                {
                    return;
                }

                // Buffer for reading data
                Byte[] bytes = new Byte[1024];
                String data = null;

                // Enter the listening loop.
                while (tcpclient.Connected)
                {


                    data = null;

                    NetworkStream stream = tcpclient.GetStream();

                    int i;

                    if ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        data = System.Text.Encoding.UTF8.GetString(bytes, 0, i);

                        byte[] msg = System.Text.Encoding.UTF8.GetBytes(data);

                        //stream.Write(msg, 0, msg.Length);
                        textBox3.AppendText(data);
                    }
                    tcpclient.Close();
                }
            }
        }

    }

2.客戶端代碼

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        TcpClient client = null;
        private void button1_Click(object sender, EventArgs e)
        {

            client = new TcpClient();
            try
            {
                //if (!client.Connected)
                //    client.Close();
                client.Connect(tbIP.Text, int.Parse(tbPort.Text));      // 與服務器連接
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return;
            }

            textBox2.Text = "連接成功";
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            button1_Click(null, null);

            string msg = textBox1.Text;
            if (msg != "")
            {
                NetworkStream streamToServer = client.GetStream();        //創建一個客戶端的NetworkStream對象
                byte[] buffer = Encoding.UTF8.GetBytes(msg);     // 獲得緩存

                streamToServer.Write(buffer, 0, buffer.Length);     // 發往服務器
                int numb = streamToServer.Read(buffer, 0, buffer.Length);     //接收來自服務器傳回來的數據，保存到buffer數組(byte型)中去
                string s = Encoding.UTF8.GetString(buffer, 0, buffer.Length);   //將數組中的內容轉化成string字符串，並且輸出
                textBox2.AppendText(s + "\r\n");
            }
        }
    }