#include<Winsock.h>
#include <stdio.h>

void main(){
   //加载套接字库
	WORD wVersionRequested;
	WSADATA wsaDATA;
	int err;

	wVersionRequested=MAKEWORD(1,1);

	err=WSAStartup(wVersionRequested,&wsaDATA);

	if(err!=0){
		return ;
	}

	if(LOBYTE(wsaDATA.wVersion)!=1||HIBYTE(wsaDATA.wVersion)!=1){
        WSACleanup();
        return;
	}
   
	//创建用于监听的套接字

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

	SOCKADDR_IN addrSrv;
	addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
    addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(6000);

	//绑定套接字
	bind(socketSrv,(SOCKADDR *)&addrSrv,sizeof(SOCKADDR));

	//将套接字设为监听模式，准备接受客户请求
	listen(socketSrv,5);

	SOCKADDR_IN addrClient;
	int len=sizeof(SOCKADDR);

	while(1){
        //等待客户请求到来
         SOCKET sockConn=accept(socketSrv,(SOCKADDR *)&addrClient,&len);
		 char sendBuf[100];
		 sprintf(sendBuf,"Welcome %s to http://www.ctgu.edu.cn",inet_ntoa(addrClient.sin_addr));
		 //发送数据
		 send(sockConn,sendBuf,strlen(sendBuf)+1,0);
		 char recvBuf[100];
		 //接受数据
		 recv(sockConn,recvBuf,100,0);
		 //打印接受的数据
		 printf("%s\n",recvBuf);
		 //关闭套接字
         closesocket(sockConn);

	}
}

#include<Winsock.h>
#include <stdio.h>

void main(){
	//加载套接字库
	WORD wVersionRequested;
	WSADATA wsaDATA;
	int err;
	
	wVersionRequested=MAKEWORD(1,1);
	
	err=WSAStartup(wVersionRequested,&wsaDATA);
	
	if(err!=0){
		return ;
	}
	
	if(LOBYTE(wsaDATA.wVersion)!=1||HIBYTE(wsaDATA.wVersion)!=1){
        WSACleanup();
        return;
	}
	
	//创建用于监听的套接字
	
	SOCKET socketClient=socket(AF_INET,SOCK_STREAM,0);
	
	SOCKADDR_IN addrSrv;
	addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
    addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(6000);
    //向服务器发出连接请求
	connect(socketClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

	//接受数据
	char recvBuf[100];
	recv(socketClient,recvBuf,100,0);
	printf("%s\n",recvBuf);

	//发送数据
	send(socketClient,"This is lisi",strlen("This is lisi")+1,0);

	//关闭套接字
	closesocket(socketClient);
	WSACleanup();

	
	//绑定套接字
//	bind(socketSrv,(SOCKADDR *)&addrSrv,sizeof(SOCKADDR));
	
	//将套接字设为监听模式，准备接受客户请求
//	listen(socketSrv,5);
	
//	SOCKADDR_IN addrClient;
//	int len=sizeof(SOCKADDR);
	
//	while(1){
        //等待客户请求到来
//		SOCKET sockConn=accept(socketSrv,(SOCKADDR *)&addrClient,&len);
//		char sendBuf[100];
//		sprintf(sendBuf,"Welcome %s to http://www.ctgu.edu.cn",inet_ntoa(addrClient.sin_addr));
		//发送数据
//		send(sockConn,sendBuf,strlen(sendBuf)+1,0);
//		char recvBuf[100];
		//接受数据
//		recv(sockConn,recvBuf,100,0);
		//打印接受的数据
//		printf("%s\n",recvBuf);
		//关闭套接字
//		closesocket(sockConn);
		
//	}
}