winsock2之最简单的win socket编程

原文: winsock2之最简单的win socket编程

 

server.cpp

#include <WINSOCK2.H>

#include <stdio.h>

#pragma comment(lib,"ws2_32.lib")

int main(int argc,char **argv)

{

    //创建套接字

    WORD myVersionRequest;

    WSADATA wsaData;

    myVersionRequest=MAKEWORD(1,1);

    int err;

    err=WSAStartup(myVersionRequest,&wsaData);

    if (!err){

        printf("已打开套接字\n");

    }else{

        printf("ERROR:嵌套字未打开!");

        return 1;

    }

    //进一步绑定套接字

    SOCKET serSocket=socket(AF_INET,SOCK_STREAM,0);//创建了可识别套接字



    //需要绑定的参数

    SOCKADDR_IN addr;

    addr.sin_family=AF_INET;

    addr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);//ip地址

    addr.sin_port=htons(6000);//绑定端口



    bind(serSocket,(SOCKADDR*)&addr,sizeof(SOCKADDR));//绑定完成

    listen(serSocket,5);//其中第二个参数代表能够接收的最多的连接数



    //////////////////////////////////////////////////////////////////////////

    //开始进行监听

    //////////////////////////////////////////////////////////////////////////

    SOCKADDR_IN clientsocket;

    int len=sizeof(SOCKADDR);

    while (1)

    {

        SOCKET serConn=accept(serSocket,(SOCKADDR*)&clientsocket,&len);//如果这里不是accept而是conection的话。。就会不断的监听

        char sendBuf[100];



        sprintf(sendBuf,"hello, %s !",inet_ntoa(clientsocket.sin_addr));//找对对应的IP并且将这行字打印到那里

        printf("Send:%s\n",sendBuf);

        send(serConn,sendBuf,strlen(sendBuf)+1,0);



        char receiveBuf[100];//接收

        recv(serConn,receiveBuf,sizeof(receiveBuf),0);

        printf("recv:%s\n",receiveBuf);



        closesocket(serConn);//关闭

        WSACleanup();//释放资源的操作

        return 0;

    }

    return 1;

}

 

client.cpp

#include <WINSOCK2.H>

#include <stdio.h>

#pragma comment(lib,"ws2_32.lib")

int main(int argc,char **argv)

{

    int err;

    WORD versionRequired;

    WSADATA wsaData;

    versionRequired=MAKEWORD(1,1);

    err=WSAStartup(versionRequired,&wsaData);//协议库的版本信息

    if (!err)    {

        printf("客户端嵌套字已经打开!\n");

    }else{

        printf("ERROR:客户端的嵌套字打开失败!\n");

        return 1;//结束

    }

    SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,0);



    SOCKADDR_IN clientsock_in;

    clientsock_in.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");

    clientsock_in.sin_family=AF_INET;

    clientsock_in.sin_port=htons(6000);



    //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三个参数

    //listen(clientSocket,5);

    connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));//开始连接

    char receiveBuf[100];

    if(true){

        

        printf("Send:%s\n","hello,this is client");

        send(clientSocket,"hello,this is client",strlen("hello,this is client")+1,0);



        recv(clientSocket,receiveBuf,101,0);

        printf("Recv:%s\n",receiveBuf);



        closesocket(clientSocket);

        WSACleanup();

    }

    return 0;

}

编译运行:

call "C:\Program Files\Microsoft Visual Studio\VC98\Bin\VCVARS32.BAT"



cl server.cpp

cl client.cpp

start cmd /k server

start cmd /k client

cmd

 

 

http://www.cnblogs.com/xianqingzh/archive/2009/02/03/1382963.html