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 // Socket1.cpp : ¶¨Òå¿ØÖÆ̨ӦÓóÌÐòµÄÈë¿Úµã¡£
//
#include "stdafx.h"
#include<winsock.h>
#include<stdio.h>
#include<string>
#include<iostream>
using namespace std;
#define WSWENS MAKEWORD(2,0)
int _tmain(int argc, _TCHAR* argv[])
{
sockaddr_in sin;
WSADATA wsadata;
//WSAStartup()µÄµ÷Ó÷½ºÍWindows Sockets DLL»¥Ïà֪ͨ¶Ô·½ËüÃÇ¿ÉÒÔÖ§³ÖµÄ×î¸ß°æ±¾,
//²¢ÇÒ»¥ÏàÈ·È϶Է½µÄ×î¸ß°æ±¾ÊǿɽÓÊܵÄ. ÔÚWSAStartup()º¯ÊýµÄÈë¿Ú,
//Windows Sockets DLL¼ì²éÁËÓ¦ÓóÌÐòËùÐèµÄ°æ±¾.Èç¹û°æ±¾¸ßÓÚDLLÖ§³ÖµÄ×îµÍ°æ±¾,
//Ôòµ÷Óóɹ¦²¢ÇÒDLLÔÚwHighVersionÖзµ»ØËüËùÖ§³ÖµÄ×î¸ß°æ±¾,
//ÔÚ wVersionÖзµ»ØËüµÄ¸ß°æ±¾ºÍwVersionRequestedÖеĽÏСÕß.
//È»ºóWindows Sockets DLL¾Í»á¼ÙÉèÓ¦ÓóÌÐò½«Ê¹ÓÃwVersion.
if(WSAStartup(WSWENS,&wsadata)!=0)

cout<<"startup failed"<<endl;

SOCKET s = socket(PF_INET,SOCK_STREAM,0);
// memset ÊǶÔÒ»¶ÎÄÚ´æ¿Õ¼äÈ«²¿ÉèÖÃΪij¸ö×Ö·û
memset(&sin,0,sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(80);
//sin.sin_addr.S_un.S_addr=inet_addr("203.208.37.99");
hostent* hptr = gethostbyname("www.google.cn");
// ½«ÓвÎÊýµÄstringÄÚÈÝcopyµ½×ó±ß²ÎÊý
memcpy(&sin.sin_addr.S_un.S_addr,hptr->h_addr,hptr->h_length);
printf("IP address:%d.%d.%d.%d\n",sin.sin_addr.S_un.S_un_b.s_b1,
sin.sin_addr.S_un.S_un_b.s_b2,
sin.sin_addr.S_un.S_un_b.s_b3,
sin.sin_addr.S_un.S_un_b.s_b4);
// ½«sockaddr_in transfer to sockaddr
if(connect(s,(sockaddr*)&sin,sizeof(sin)))
{
cout<<"connect failed"<<endl;
return 0;
}
else
{
cout<<"connect success"<<endl;
}
char buffersend[]="GET/HTTP1.1\nHOST:www.google.cn\nconnection:close\n\n";
send(s,buffersend,strlen(buffersend),0);
/*string ss;
int len = recv(s,const_cast<char*>(ss.c_str()),2000,0);*/
char bufferecv[10240];
int len=recv(s,bufferecv,10240,0);
printf("the length of page is %d\n", len);