Windows Socket编程的大致过程:
服务器端:
----过程-------------对应的API-------
0.初始化 | WSAStartup()
1.创建Socket | socket()
2.绑定Socket | bind()
3.监听 | listen()
4.接受连接 | accept()
5.接收/发送数据 | recv()/send()
6.关闭socket | closesocket()
7.释放资源 | WSACleanup()
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客户端:
0.初始化 | WSAStartup()
1.创建Socket | socket()
2.连接Socket | connect()
3.接收/发送数据 | recv()/send()
4.关闭socket | closesocket()
5.释放资源 | WSACleanup()
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以下是按照上面所述步骤编写的服务器端和客户端最简单的一个小例子:
0.服务器端代码:
// FileName: Server.cpp// 服务器端#include<stdio.h>#include<winsock.h>#include<windows.h>#pragma comment(lib,"ws2_32")#define PORT 2012#define IP "127.0.0.1"void main(){// 0.初始化WSADATA wsaData;WSAStartup(0x0202, &wsaData);// 1.创建SocketSOCKET sockServer;sockServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);// 2.绑定Socketstruct sockaddr_in sockaddrServer;sockaddrServer.sin_family = AF_INET;sockaddrServer.sin_addr.S_un.S_addr = inet_addr(IP);sockaddrServer.sin_port = htons(PORT);memset(sockaddrServer.sin_zero, 0x00, 8);bind(sockServer, (struct sockaddr*)&sockaddrServer, sizeof(sockaddrServer));// 3.监听listen(sockServer, 0);// 4.接受连接struct sockaddr_in sockaddrClient; // 用于存放客户端地址信息int addrlen = sizeof(sockaddrClient);SOCKET sockClient = accept(sockServer, (struct sockaddr*)&sockaddrClient, &addrlen);printf("IP: %s\n", inet_ntoa(sockaddrClient.sin_addr));printf("PORT: %d\n", ntohs(sockaddrClient.sin_port));// 5.recvchar buf[64] = {0};recv(sockClient, buf, 64, 0);printf("Recv buf = %s\n", buf);// 6.关闭Socketclosesocket(sockServer);// 7.释放资源WSACleanup();}
1.客户端代码:
// FileName: Client.cpp// 客户端#include<stdio.h>#include<winsock.h>#pragma comment(lib, "ws2_32")#define IP "127.0.0.1"#define PORT 2012void main(){// 0.初始化WSADATA wsaData;WSAStartup(0x0202, &wsaData);// 1.绑定SocketSOCKET sockServer= socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);// 2.连接Socketstruct sockaddr_in sockaddrServer;sockaddrServer.sin_family = AF_INET;sockaddrServer.sin_addr.S_un.S_addr = inet_addr(IP);sockaddrServer.sin_port = htons(2012);memset(sockaddrServer.sin_zero, 0x00, 8);connect(sockServer, (struct sockaddr*)&sockaddrServer, sizeof(sockaddrServer));// 3.sendsend(sockServer, "helloworld", strlen("helloworld"), 0);// 4.关闭Socketclosesocket(sockServer);// 5.释放资源WSACleanup();}
