• winSocket 简单实现


    #define WIN32_LEAN_AND_MEAN
    #define  _WINSOCK_DEPRECATED_NO_WARNINGS 
    
    
    #include<iostream>
    #include<stdio.h>
    #include<Windows.h>
    #include<WinSock2.h>
    //#pragma comment(lib,"ws2_32.lib")// win 写法 + 动态库 
    
    
    using namespace std;
    int main()
    {
        WORD ver = MAKEWORD(2, 2);
        WSADATA data;
        WSAStartup(ver, &data);
        //socket 网络通信  代码
    
        //tcp 服务端
        //1. 建立一个socket
        SOCKET _sock= socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    
        //2.绑定用于客户端接收的网路端口
        sockaddr_in _sin = {};
        _sin.sin_family = AF_INET;
        _sin.sin_port = htons(4567);
        _sin.sin_addr.S_un.S_addr = htonl(INADDR_ANY);// inet_addr("127.0.0.1");//服务器 要绑定的ip地址
    
        if (SOCKET_ERROR == bind(_sock, (sockaddr*)&_sin, sizeof(_sin))) {
            printf("bind error");
        }
        else {
            printf("bind successful");
        }
        //3.监听端口
        if (SOCKET_ERROR == listen(_sock, 5)) {
            printf("listen error");
        }
        else {
            printf("listen successful");
        }
        //4。accept 等待接收客户连接
        sockaddr_in _clientAddr = {};
        SOCKET _cSock ;
        char msgbuf[] = "hello world";
        int _cSock_Strlen = strlen(msgbuf) + 1;
        int len = sizeof(_clientAddr);
        //_cSock = accept(_sock, (sockaddr*)&_clientAddr, (int*)sizeof(_clientAddr)); //会返回客户端地址
        while (true)
        {
            _cSock = accept(_sock, (sockaddr*)&_clientAddr, &len); //会返回客户端地址
            if (INVALID_SOCKET == _cSock) {
                printf("INVALIE client socket");
            }
            printf("new client:IP=%s
    ", inet_ntoa(_clientAddr.sin_addr));
            //5。send 发送一条数据
            send(_cSock, msgbuf,  _cSock_Strlen, 0);
        }
        //6. 关闭socket
            closesocket(_sock);
        WSACleanup();
        return 0;
    }
    #define WIN32_LEAN_AND_MEAN
    #define  _WINSOCK_DEPRECATED_NO_WARNINGS 
    
    
    #include<iostream>
    #include<stdio.h>
    #include<Windows.h>
    #include<WinSock2.h>
    //#pragma comment(lib,"ws2_32.lib")// win 写法 + 动态库 
    
    
    using namespace std;
    int main()
    {
        WORD ver = MAKEWORD(2, 2);
        WSADATA data;
        WSAStartup(ver, &data);
        //socket 网络通信  代码
    
        //tcp 服务端
        //1. 建立一个socket
        SOCKET _sock= socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    
        //2.绑定用于客户端接收的网路端口
        sockaddr_in _sin = {};
        _sin.sin_family = AF_INET;
        _sin.sin_port = htons(4567);
        _sin.sin_addr.S_un.S_addr = htonl(INADDR_ANY);// inet_addr("127.0.0.1");//服务器 要绑定的ip地址
    
        if (SOCKET_ERROR == bind(_sock, (sockaddr*)&_sin, sizeof(_sin))) {
            printf("bind error");
        }
        else {
            printf("bind successful");
        }
        //3.监听端口
        if (SOCKET_ERROR == listen(_sock, 5)) {
            printf("listen error");
        }
        else {
            printf("listen successful");
        }
        //4。accept 等待接收客户连接
        sockaddr_in _clientAddr = {};
        SOCKET _cSock ;
        char msgbuf[] = "hello world";
        int _cSock_Strlen = strlen(msgbuf) + 1;
        int len = sizeof(_clientAddr);
        //_cSock = accept(_sock, (sockaddr*)&_clientAddr, (int*)sizeof(_clientAddr)); //会返回客户端地址
        while (true)
        {
            _cSock = accept(_sock, (sockaddr*)&_clientAddr, &len); //会返回客户端地址
            if (INVALID_SOCKET == _cSock) {
                printf("INVALIE client socket");
            }
            printf("new client:IP=%s
    ", inet_ntoa(_clientAddr.sin_addr));
            //5。send 发送一条数据
            send(_cSock, msgbuf,  _cSock_Strlen, 0);
        }
        //6. 关闭socket
            closesocket(_sock);
        WSACleanup();
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/jingchu/p/10399465.html
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