C#实现局域网聊天 通讯 Socket TCP 多人
程序分别为服务端与客户端，服务端创建套接字使用多线程侦听多客户端请求
代码需要引用System.Net；和System.Net.Socket；这两个类
分享源码demo：https://pan.baidu.com/s/10RuE9Vk0cIoxY91uzx4Gig 提取码:4eds
运行图：
服务端
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 6 namespace ConsoleServer 7 { 8 class Program 9 { 10 static void Main(string[] args) 11 { 12 ServerControl Server = new ServerControl();//初始化Socket 13 Server.Start();//启动侦听连接 14 //Console.WriteLine("123"); 15 Console.Read(); 16 } 17 } 18 }
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Net.Sockets; 6 using System.Net; 7 using System.Threading; 8 9 namespace ConsoleServer 10 { 11 public class ServerControl 12 { 13 public Socket ServerSocket; 14 public List<Socket> ClientList=null;//客户端集合 15 16 /// <summary> 17 /// 构造函数 18 /// </summary> 19 public ServerControl() 20 { 21 //创建套接字，ipv4寻址方式，套接字类型，传输协议 22 ServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 23 ClientList=new List<Socket>();//实例化客户端接入集合介入 24 } 25 26 public void Start() 27 { 28 ServerSocket.Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"),1231));//绑定IP和端口 29 ServerSocket.Listen(10000);//支持最多连接数 30 Console.WriteLine("start server succeed"); 31 32 //当有客户接入时当前线程会被挂起，每次新接入客户端创建独立线处理 33 Thread ThreadAccept = new Thread(Accept); 34 ThreadAccept.IsBackground = true;//设置为后台线程 35 ThreadAccept.Start();//启动线程 36 37 } 38 39 private void Accept() 40 { 41 Socket Client = ServerSocket.Accept();//客户端接入当前线程挂起 42 IPEndPoint point=Client.RemoteEndPoint as IPEndPoint;//将远端节点转为ip和端口 43 Console.WriteLine("IP {0}:{1} connect succeed",point.Address,point.Port);//显示接入信息 44 ClientList.Add(Client);//将此连接添加到客户集合 45 46 //接收消息只处理一次，线程被挂起，创建新线程处理其新消息 47 Thread ThreadReceive = new Thread(Receive); 48 ThreadReceive.IsBackground = true;//设置为后台线程 49 ThreadReceive.Start(Client);//启动线程 50 Accept();//回掉处理新接入客户端 51 } 52 53 /// <summary> 54 /// 处理收到的消息 55 /// </summary> 56 /// <param name="obj"></param> 57 private void Receive(object obj) 58 { 59 Socket Client = obj as Socket; 60 IPEndPoint point = Client.RemoteEndPoint as IPEndPoint;//将远端节点转为ip和端口 61 try 62 { 63 byte[] ByteReceive = new byte[1024];//消息数组 64 int ReceiveLenght = Client.Receive(ByteReceive);//只处理一次消息，此处会被挂起 65 string msg = point.Address + "[" + point.Port + "]:" + Encoding.UTF8.GetString(ByteReceive, 0, ReceiveLenght); 66 Console.WriteLine(msg);//打印收到的消息 67 Broadcast(Client, msg);//广播消息 68 69 Client.Send(Encoding.UTF8.GetBytes(DateTime.Now.ToString()));//回发当前时间给消息源 70 Receive(Client);//回调处理新消息 71 } 72 catch 73 { 74 ClientList.Remove(Client);//当客户端断开，从客户端集合移除该客户端 75 Console.WriteLine("{0}[{1}]:断开连接", point.Address, point);//打印提示信息 76 } 77 78 } 79 80 /// <summary> 81 /// 广播消息 82 /// </summary> 83 /// <param name="cli"></param> 84 /// <param name="msg"></param> 85 public void Broadcast(Socket cli,string msg) 86 { 87 foreach (var item in ClientList )//遍历所有客户端 88 { 89 if (item != cli) 90 item.Send(Encoding.UTF8.GetBytes(msg));//给除数据源以外客户端发送广播消息 91 } 92 } 93 } 94 }
客户端
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 6 namespace ConsoleClient 7 { 8 class Program 9 { 10 static void Main(string[] args) 11 { 12 ClientControl Client = new ClientControl();//初始化Socket 13 Client.Connect("127.0.0.1",1231);//连接到服务器 14 Console.WriteLine("Please enter the content to send,Enter exit to exit!");//提示信息 15 string msg=Console.ReadLine();//输入 16 while (msg!="exit")//判断是否退出 17 { 18 Client.Send(msg);//发送消息 19 msg = Console.ReadLine();//输入消息 20 21 } 22 23 } 24 } 25 }
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Net.Sockets; 6 using System.Threading; 7 8 namespace ConsoleClient 9 { 10 public class ClientControl 11 { 12 private Socket ClientSocket; 13 14 public ClientControl() 15 { 16 //创建套接字，ipv4寻址方式，套接字类型，传输协议 17 ClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 18 } 19 20 /// <summary> 21 /// 连接到服务器 22 /// </summary> 23 /// <param name="IP"></param> 24 /// <param name="Port"></param> 25 public void Connect(string IP, Int32 Port) 26 { 27 try 28 { 29 ClientSocket.Connect(IP, Port);//连接到指定服务器 30 Console.WriteLine("connect server succeed ok!");//提示信息 31 //收到消息是线程会被挂起，创建新线程处理收到的消息 32 Thread ThreadReceive = new Thread(Receive); 33 ThreadReceive.IsBackground = true; 34 ThreadReceive.Start(); 35 } 36 catch(SocketException e) 37 { 38 Console.WriteLine("无法连接到{0}:{1}{2}",IP,Port,e); 39 } 40 } 41 42 /// <summary> 43 /// 发送消息 44 /// </summary> 45 /// <param name="msg"></param> 46 public void Send(string msg) 47 { 48 ClientSocket.Send(Encoding.UTF8.GetBytes(msg)); 49 } 50 51 /// <summary> 52 /// 接收消息 53 /// </summary> 54 private void Receive() 55 { 56 try 57 { 58 byte[] ByteReceive = new byte[1024]; 59 int ReceiveLenght = ClientSocket.Receive(ByteReceive);//此处线程会被挂起 60 Console.WriteLine("{0}", Encoding.UTF8.GetString(ByteReceive, 0, ReceiveLenght)); 61 Receive(); 62 } 63 catch 64 { 65 Console.WriteLine("服务器已断开"); 66 } 67 } 68 } 69 }
