貌似n久前写过一篇, 人的忘性太大了, 再来个入门的
通俗的理解socket就是ip和端口的组合. 所以你看到定义一个socket的方式就是:
int port = 2000; string host = "127.0.0.1"; IPAddress ip = IPAddress.Parse(host); IPEndPoint ipe = new IPEndPoint(ip, port); Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个Socket类 s.Bind(ipe);//绑定2000端口
知道了socket的意思之后, 直接看例子, 新建两个控制台项目
//server static void Main(string[] args) { try { int port = 2000; string host = "127.0.0.1"; IPAddress ip = IPAddress.Parse(host); IPEndPoint ipe = new IPEndPoint(ip, port); Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个Socket类 s.Bind(ipe);//绑定2000端口 s.Listen(0);//开始监听 Console.WriteLine("Wait for connect"); Socket temp = s.Accept();//为新建连接创建新的Socket。 Console.WriteLine("Get a connect"); string recvStr = ""; byte[] recvBytes = new byte[1024]; int bytes; bytes = temp.Receive(recvBytes, recvBytes.Length, 0);//从客户端接受信息 recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes); Console.WriteLine("Server Get Message:{0}", recvStr);//把客户端传来的信息显示出来 string sendStr = "Ok!Client Send Message Sucessful!"; byte[] bs = Encoding.ASCII.GetBytes(sendStr); temp.Send(bs, bs.Length, 0);//返回客户端成功信息 temp.Close(); s.Close(); } catch (ArgumentNullException e) { Console.WriteLine("ArgumentNullException: {0}", e); } catch (SocketException e) { Console.WriteLine("SocketException: {0}", e); } Console.WriteLine("Press Enter to Exit"); Console.ReadLine(); }
//客户端 static void Main(string[] args) { try { int port = 2000; string host = "127.0.0.1"; IPAddress ip = IPAddress.Parse(host); IPEndPoint ipe = new IPEndPoint(ip, port);//把ip和端口转化为IPEndPoint实例 Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个Socket Console.WriteLine("Conneting..."); c.Connect(ipe);//连接到服务器 string sendStr = "hello!This is a socket test"; byte[] bs = Encoding.ASCII.GetBytes(sendStr); Console.WriteLine("Send Message"); c.Send(bs, bs.Length, 0);//发送测试信息 string recvStr = ""; byte[] recvBytes = new byte[1024]; int bytes; bytes = c.Receive(recvBytes, recvBytes.Length, 0);//从服务器端接受返回信息 recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes); Console.WriteLine("Client Get Message:{0}", recvStr);//显示服务器返回信息 c.Close(); } catch (ArgumentNullException e) { Console.WriteLine("ArgumentNullException: {0}", e); } catch (SocketException e) { Console.WriteLine("SocketException: {0}", e); } Console.WriteLine("Press Enter to Exit"); Console.ReadLine(); }