最近开始学习C#的Socket 记录一下。

最简单的服务端

1   class Program 2     { 3         /* 4          1、实例化Socket对象 5          2、绑定端口和Ip（Bind） 6          3、接听客户端连接（Listen） 7          4、调用Accept取得客户端Socket 8          5、Send 和 Receive 收发数据 9          6、Close关闭Socket       10              */11         static void Main(string[] args)12         {13             Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);14             IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8888);15             server.Bind(endPoint);16             server.Listen(10);17             server.BeginAccept(new AsyncCallback(AccepCallback), server);18             Console.ReadKey();19 20         }21 22         private static void AccepCallback(IAsyncResult ar)23         {24             Socket server = (Socket)ar.AsyncState;25             Socket client = server.EndAccept(ar);26             Console.WriteLine("收到{0}连接", client.RemoteEndPoint.ToString());27             byte[] data = Encoding.UTF8.GetBytes("客户端连接成功");28             int len = data.Length;29             client.Send(BitConverter.GetBytes(len));30             client.Send(data);31             server.BeginAccept(new AsyncCallback(AccepCallback), server);32 33         }34     }

最简单的客户端

1 class Program 2     { 3         static void Main(string[] args) 4         { 5             Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 6             try 7             { 8                 client.Connect("127.0.0.1", 8888); 9                 Console.WriteLine("连接成功");10                 byte[] buffer = new byte[4];11                 client.Receive(buffer);12                 int len = BitConverter.ToInt32(buffer, 0);13                 buffer = new byte[len];14                 client.Receive(buffer);15                 string msg = Encoding.UTF8.GetString(buffer);16                 Console.WriteLine(msg);17             }18             catch (Exception e)19             {20 21                 Console.WriteLine(e.Message);22             }23             Console.ReadKey();24         }25     }