Winsock;TCP/IP编程;模板代码;VC++;单线程;

#include <Winsock2.h>#include <stdio.h>#include <windows.h>#pragma comment(lib,"ws2_32.lib")int main(){//加载套接字库WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested=MAKEWORD( 1 , 1 );err=WSAStartup(wVersionRequested,&wsaData);if(err!=0){printf("Error,EXIT!/n");return -1;}if( LOBYTE(wsaData.wVersion)!=1 || HIBYTE(wsaData.wVersion)!= 1 ){WSACleanup();return -1;}//创建用于监听的套接字SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,0); SOCKADDR_IN addrSrv;//本地地址信息addrSrv.sin_addr.S_un.S_addr=inet_addr("192.168.17.91");//本地地址,主机字节序转化为网络字节序addrSrv.sin_family=AF_INET;addrSrv.sin_port=htons(6000);//网络端口,转化为网络字节序//绑定套接字与本地地址信息bind(sockSrv,(SOCKADDR*)(&addrSrv),sizeof(SOCKADDR));//将套接字设为监听模式，准备接受客户请求listen(sockSrv,5);//客户端的地址信息SOCKADDR_IN addrClient;int len=sizeof(SOCKADDR);while(true){//等待客户请求到来，接收到连接套接字,建立了TCP连接。SOCKET sockConn=accept(sockSrv,(SOCKADDR*)(&addrClient),&len);//收到客户请求，打印欢迎消息char sendBuf[100];sprintf(sendBuf,"Welcome/t%s !/n",inet_ntoa(addrClient.sin_addr));printf("%s/n",sendBuf);//接受数据while(recv(sockConn,sendBuf,100,0)){Sleep(1000);}printf("%s/n",sendBuf);//关闭套接字closesocket(sockConn);}closesocket(sockSrv);WSACleanup();return 0;}

 

#include <Winsock2.h>#include <windows.h>#include <stdio.h>#pragma comment(lib,"ws2_32.lib")int main(){//加载套接字库WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested=MAKEWORD( 1 , 1 );err=WSAStartup(wVersionRequested,&wsaData);if(err!=0){printf("Error,EXIT!/n");return -1;}if( LOBYTE(wsaData.wVersion)!=1 || HIBYTE(wsaData.wVersion)!= 1 ){WSACleanup();return -1;}//创建套接字SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0); char ip[100];printf("输入对方IP,速度:");scanf("%s",ip);SOCKADDR_IN addrSrv;//服务器地址信息addrSrv.sin_addr.S_un.S_addr=inet_addr(ip);//服务器地址,主机字节序转化为网络字节序addrSrv.sin_family=AF_INET;addrSrv.sin_port=htons(6000);//网络端口,转化为网络字节序//向服务器发出连接请求connect(sockClient,(SOCKADDR*)(&addrSrv),sizeof(SOCKADDR));//发送数据char recvBuf[100];scanf("%s",recvBuf);send(sockClient,recvBuf,strlen(recvBuf)+1,0);//关闭套接字closesocket(sockClient);return 0;}