[C#] TCP允許多人連線SERVER和重複開啟的Client

程式碼擷錄自jashliao痞客邦部落格

SERVER

using System;

using System.Threading;

using System.Net.Sockets;

using System.Text;

 

namespace csharp_multi_threaded_server_socket

{

    //資料來源 http://csharp.net-informations.com/communications/csharp-multi-threaded-server-socket.htm

    class Program

    {

        static void Main(string[] args)

        {

            TcpListener serverSocket = new TcpListener(8888);

            TcpClient clientSocket = default(TcpClient);

            int counter = 0;

 

            serverSocket.Start();

            Console.WriteLine(” >> ” + “Server Started”);

 

            counter = 0;

 

            while (true)

            {

                counter += 1;

                clientSocket = serverSocket.AcceptTcpClient();

                Console.WriteLine(” >> ” + “Client No:” + Convert.ToString(counter) + ” started!”);

                handleClinet client = new handleClinet();

                client.startClient(clientSocket, Convert.ToString(counter));

            }

 

            clientSocket.Close();

            serverSocket.Stop();

            Console.WriteLine(” >> ” + “exit”);

            Console.ReadLine();

        }

    }

 

    //Class to handle each client request separatly

    public class handleClinet

    {

        TcpClient clientSocket;

        string clNo;

        public void startClient(TcpClient inClientSocket, string clineNo)

        {

            this.clientSocket = inClientSocket;

            this.clNo = clineNo;

            Thread ctThread = new Thread(doChat);

            ctThread.Start();

        }

 

        private void doChat()

        {

            int requestCount = 0;

            byte[] bytesFrom = new byte[10025];

            string dataFromClient = null;

            Byte[] sendBytes = null;

            string serverResponse = null;

            string rCount = null;

            requestCount = 0;

 

            while ((true))

            {

                try

                {

                    requestCount = requestCount + 1;

                    NetworkStream networkStream = clientSocket.GetStream();

                    networkStream.Read(bytesFrom, 0, (int)clientSocket.ReceiveBufferSize);

                    dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom);

                    dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf(“$”));

                    Console.WriteLine(” >> ” + “From client-” + clNo + dataFromClient);

 

                    rCount = Convert.ToString(requestCount);

                    serverResponse = “Server to clinet(” + clNo + “) ” + rCount;

                    sendBytes = Encoding.ASCII.GetBytes(serverResponse);

                    networkStream.Write(sendBytes, 0, sendBytes.Length);

                    networkStream.Flush();

                    Console.WriteLine(” >> ” + serverResponse);

                }

                catch (Exception ex)

                {

                    clientSocket.Close();//jashliao修改

                    Console.WriteLine(” >> ” + “Server to clinet(” + clNo + “) closed…” );// jashliao修改

                    break; // jashliao修改

                }

            }

        }

 

    }

}

 

CLIENT

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net.Sockets;

 

namespace csharp_multi_threaded_client_socket

{

    //資料來源 http://csharp.net-informations.com/communications/csharp-multi-threaded-client-socket.htm

    public partial class Form1 : Form

    {

        System.Net.Sockets.TcpClient clientSocket = new System.Net.Sockets.TcpClient();

        NetworkStream serverStream;

 

        public Form1()

        {

            InitializeComponent();

        }

 

        private void Form1_Load(object sender, EventArgs e)

        {

            msg(“Client Started”);

            clientSocket.Connect(“127.0.0.1”, 8888);

            label1.Text = “Client Socket Program – Server Connected …”;

        }

 

        private void button1_Click(object sender, EventArgs e)

        {

            NetworkStream serverStream = clientSocket.GetStream();

            byte[] outStream = System.Text.Encoding.ASCII.GetBytes(“Message from Client$”);

            serverStream.Write(outStream, 0, outStream.Length);

            serverStream.Flush();

 

 

 

            byte[] inStream = new byte[10025];

            serverStream.Read(inStream, 0, (int)clientSocket.ReceiveBufferSize);

            string returndata = System.Text.Encoding.ASCII.GetString(inStream);

            msg(“Data from Server : ” + returndata);

        }

 

        public void msg(string mesg)

        {

            textBox1.Text = textBox1.Text + Environment.NewLine + ” >> ” + mesg;

        }

 

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)

        {

            clientSocket.GetStream().Close();// jashliao修改

            clientSocket.Close();// jashliao修改

        }

    }

}

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