#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;} 

#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;}

call "C:\Program Files\Microsoft Visual Studio\VC98\Bin\VCVARS32.BAT"cl server.cppcl client.cppstart cmd /k serverstart cmd /k clientcmd