孙鑫VC++ 网络编程问题

#include <WinSock2.h>

#include <iostream>

#include <stdio.h>

void main()

{

	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;

	}

	//创建套接字

	SOCKET socksrv = 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(socksrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

	//将套接字设为监听模式，准备接收客户请求

	listen(socksrv,5);



	SOCKADDR_IN addrClient;

	int len = sizeof(SOCKADDR);



	while (1)

	{

		SOCKET sockConn = accept(socksrv,(SOCKADDR*)&addrClient,&len);

		char sendBuf[100];

		sprintf(sendBuf,"s%",inet_ntoa(addrClient.sin_addr));

		//发送数据

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

		char recvBuf[100];

		//接收数据

		recv(sockConn,recvBuf,100,0);

		//打印

		printf("s%\n",recvBuf);

		//关闭套接字

		closesocket(sockConn);

	}

}

#include <WinSock2.h>

#include <stdio.h>

void main()

{

	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;

	}



	SOCKET sockClient = 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);



	connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));



	char recvBuf[100];

	recv(sockClient,recvBuf,100,0);

	printf("s%\n",recvBuf);



	send(sockClient,"This is lisi",strlen("This is lisi")+1,0);

	closesocket(sockClient);

	WSACleanup();

}