一:有图有真相,很简单
a,
b,
Thread 构造函数
(ParameterizedThreadStart)
初始化 Thread 类的新实例,指定允许对象在线程启动时传递给线程的委托。
参数
start
类型:System.Threading.ParameterizedThreadStart
ParameterizedThreadStart 委托,它表示此线程开始执行时要调用的方法。
c,服务器的线程和套接字
线程:
threadmain listen()
threadaccept accept()
threadconmmunication send() receive()
套接字:
socketlisten listen()
socketsend send()
socketreceive receive()
二:客户端代码:
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; using System.Threading; using System.Net; using System.IO; namespace client { public partial class Client : Form { public Client() { InitializeComponent(); } //创建 1个客户端套接字 和1个负责监听服务端请求的线程 Socket socketClient = null; Thread threadClient = null; private delegate void SetText(string text); /// <summary> /// 链接服务端 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_login_Click(object sender, EventArgs e) { socketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //这里的ip地址,端口号都是服务端绑定的相关数据。 IPAddress ip = IPAddress.Parse(tb_ip.Text.Trim()); IPEndPoint endpoint = new IPEndPoint(ip, Convert.ToInt32(tb_socket.Text.Trim())); socketClient.Connect(endpoint);//链接有端口号与IP地址确定服务端. ThreadStart thS = new ThreadStart(this.ReceMsg); //客户端在接受服务端发送过来的数据是通过Socket 中的Receive方法, //该方法会阻断线程,所以我们自己为该方法创建了一个线程 threadClient = new Thread(thS); threadClient.IsBackground = true;//设置后台线程 threadClient.Start(); } //接收服务端数据 public void ReceMsg() { while (true)//持续监听服务端发来的消息 { //定义一个2M的内存缓冲区 用于临时性存储接收到的信息 byte[] buffer = new byte[1024 * 1024 * 2]; //将客户端套接字接收到的数据存入内存缓冲区, 并获取其长度 int length = socketClient.Receive(buffer); //clientSocket.Receive(buffer);//接收服务端发送过来的数据 string ReceiveMsg = System.Text.Encoding.UTF8.GetString(buffer,0,length);//把接收到的字节数组转成字符串显示在文本框中,如果没有长度,就会以零填充满,后面的日期就会不显示了。 ShowMsg("接收到数据: " + ReceiveMsg); } } //消息框里面数据 void ShowMsg(string str) { if (this.tb_infor.InvokeRequired) { SetText st = new SetText(ShowMsg); this.Invoke(st, new object[] { str }); } else { //string Ystr = ""; //if (tb_infor.Text != "") //{ // Ystr = tb_infor.Text + " "; //} //tb_infor.Text = Ystr + str + GetCurrentTime(); //代替上面的方法 tb_infor.AppendText(str + GetCurrentTime() + " "); } }/// <summary> /// 发送消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_sendmessage_Click(object sender, EventArgs e) { string txtMsg = tb_message.Text; //将输入的内容字符串转换为机器可以识别的字节数组 byte[] buffer = Encoding.UTF8.GetBytes(txtMsg); socketClient.Send(buffer); ShowMsg("发送的数据: " + txtMsg); } #endregion /// <summary> /// 获取当前系统时间的方法 /// </summary> /// <returns>当前时间</returns> private DateTime GetCurrentTime() { DateTime currentTime = new DateTime(); currentTime = DateTime.Now; return currentTime; } } }
三:服务器代码:
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; using System.Net; using System.Threading; using System.IO; namespace socket { public partial class Server : Form { public Server() { InitializeComponent(); //关闭对文本框的非法线程操作检查,不建议用 //TextBox.CheckForIllegalCrossThreadCalls = false; } Socket socketWatch = null;//负责监听客户端的套接字 Thread threadWatch = null;//负责监听客户端的线程 //声明一个带参数委托 private delegate void SetText(string text); /// 开始服务端监听 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_StartServer_Click(object sender, EventArgs e) { #region //创建一个Socket实例 //第一个参数表示使用ipv4 //第二个参数表示发送的是数据流 //第三个参数表示使用的协议是Tcp协议 socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //获取ip地址 IPAddress ip = IPAddress.Parse(tb_ip.Text.Trim()); //创建一个网络通信节点,这个通信节点包含了ip地址,跟端口号。 //这里的端口我们设置为1029,这里设置大于1024,为什么自己查一下端口号范围使用说明。 IPEndPoint endPoint = new IPEndPoint(ip, int.Parse(tb_socket.Text.Trim())); //设置SOCKET允许多个SOCKET访问同一个本地IP地址和端口号 socketWatch.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true); //Socket绑定网路通信节点 socketWatch.Bind(endPoint); //将套接字的监听队列长度限制为10 socketWatch.Listen(10); ShowMsg("开启监听!"); //实力化一个线程上的委托 ThreadStart threadDelegate = new ThreadStart(this.accpet); //实力化一个处理线程委托的的新线程 threadWatch = new Thread(threadDelegate); //等同于上面两句newthread = new Thread(new ThreadStart(this.accpet)); threadWatch.IsBackground = true; threadWatch.Start(); #endregion } //消息框里面数据 public void ShowMsg(string str) { if (this.tb_infor.InvokeRequired) { //实例化一个委托 SetText d = new SetText(ShowMsg); this.Invoke(d, new object[] { str }); } else { //string Ystr = ""; //if (tb_infor.Text != "") //{ // Ystr = tb_infor.Text + " "; //} //this.tb_infor.Text = Ystr + str + GetCurrentTime(); tb_infor.AppendText(str + GetCurrentTime() + " "); } } Socket SocketConnection = null;//创建一个负责和客户端通信的套接字 public void accpet() { while (true)//注意该循环,服务端要持续监听,要不然一个客户端链接过后就无法链接第二个客户端了。 { //创建一个接收客户端通信的Socket SocketConnection = socketWatch.Accept(); //如果监听到客户端有链接,则运行到下一部,提示,链接成功! ShowMsg("链接成功!"); //创建一个通信线程 ParameterizedThreadStart pts = new ParameterizedThreadStart(ServerRecMsg); Thread thr = new Thread(pts); thr.IsBackground = true; //启动线程 thr.Start(SocketConnection); } } /// <summary> /// 向客户端发送信息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_sendany_Click(object sender, EventArgs e) { string SendMsg = tb_message.Text; if (SendMsg != "") { byte[] buffer = System.Text.Encoding.UTF8.GetBytes(SendMsg); //将要发送的数据,生成字节数组。 SocketConnection.Send(buffer); ShowMsg("向客户端发送了:" + SendMsg); } } /// <summary> /// 获取当前系统时间的方法 /// </summary> /// <returns>当前时间</returns> private DateTime GetCurrentTime() { DateTime currentTime = new DateTime(); currentTime = DateTime.Now; return currentTime; } /// <summary> /// 接收客户端发来的信息 /// </summary> /// <param name="socketClientPara">客户端套接字对象</param> private void ServerRecMsg(object socketClientPara) { Socket socketServer = socketClientPara as Socket; while (true) { //创建一个内存缓冲区 其大小为1024*1024字节 即1M byte[] arrServerRecMsg = new byte[1024 * 1024 * 2]; //将接收到的信息存入到内存缓冲区,并返回其字节数组的长度 int length = socketServer.Receive(arrServerRecMsg); //将机器接受到的字节数组转换为人可以读懂的字符串 string strSRecMsg = Encoding.UTF8.GetString(arrServerRecMsg, 0, length); //将发送的字符串信息附加到文本框txtMsg上 ShowMsg("接受客户端数据:" + strSRecMsg); } } } }