sock访问网站?

leon_罗 2012-09-17 01:00:14

一个网络地址可能对应着多个网站，我们访问这个网络地址的时候是通过主机头来分别我们要去的网站
我用socket访问网站，在哪里加入主机头，怎么加入？
下面是我的代码：请指教

#include<iostream>

#include<winsock2.h>

#include<string>

#include<windows.h>

using namespace std;

#pragma comment(lib,"ws2_32.lib")

UINT recvData(LPVOID lpp);

class TcpSendHttp  

{

public:

	TcpSendHttp();

	virtual ~TcpSendHttp();

	bool connectWeb(const char* ip,int port);

	void createHttpHead(string head);

	int sendHttpHead();

	int recvHttpHead();

	void keepLive();

private:

	string m_requestHead;//请求头

	string m_responseHead;//响应头

	string m_cookie;//服务器返回session

	SOCKET m_socket;//套接字

};

TcpSendHttp::TcpSendHttp()

{

	m_requestHead="";

	m_responseHead="";

	m_cookie=""; 



	//加载动态文件

	WSADATA wsaData;

	if(WSAStartup(MAKEWORD(2, 0), &wsaData) != 0)

	{

		std::cout<<"up error"<<std::endl;

		exit(1);

	}

}



TcpSendHttp::~TcpSendHttp()

{

	closesocket(m_socket);

	WSACleanup();

}



//连接服务器

bool TcpSendHttp::connectWeb(const char* ip,int port)

{

	SOCKADDR_IN addrSev;

	addrSev.sin_addr.S_un.S_addr = inet_addr(ip);

	addrSev.sin_port = htons(port);

	addrSev.sin_family = AF_INET;

	//请求连接

	if(m_socket != NULL)

		closesocket(m_socket);

	m_socket = socket(AF_INET,SOCK_STREAM,0);

		if(connect(m_socket,(SOCKADDR *)&addrSev,sizeof(SOCKADDR))<0)

		{

			std::cout<<"connect error"<<std::endl;

			return false;

		}

		else

		{

			//DWORD threadId;

			//CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)recvData,&m_socket,0,&threadId);

			return true;

		}

	

}



//创建HTTP头

void TcpSendHttp::createHttpHead(string head)

{

	m_requestHead+= head;

}



//发送

int TcpSendHttp::sendHttpHead()

{

	int leng = send(m_socket,m_requestHead.c_str(),m_requestHead.length()+1,0);

	if(leng!=(m_requestHead.length()+1))

	{

		return -1;

	}

	else 

	{

		cout<<"send right"<<endl;

		m_requestHead="";

		return leng;

	}

}



//接收

int TcpSendHttp::recvHttpHead()

{

	m_responseHead="";

	cout<<"recving"<<endl;

	char answer[10240];

	int resp_leng =10240;       

	resp_leng= recv(m_socket, (char*)&answer, 10240, 0);        

	if (resp_leng>0) 

	{

		cout<<resp_leng<<endl;

		m_responseHead+= string(answer).substr(0,resp_leng);  

		cout<<"响应头\n"<<m_responseHead<<endl;

	}

	if(m_cookie=="" && m_responseHead!="")

	{

		int cookieBegin = m_responseHead.find("Set-Cookie:",0);

		int cookieEnd = m_responseHead.find("\r\n",cookieBegin);

		m_cookie.append(m_responseHead,cookieBegin+4,cookieEnd-cookieBegin-12);

	}

	cout<<"recv over"<<endl;

	return resp_leng;

}



//将cookie加入HTTP请求头中

void TcpSendHttp::keepLive()

{

	m_requestHead =m_requestHead+m_cookie+"\r\n";

}



//自己尝试着用线程来recv

/*UINT recvData(LPVOID lpp)

{

	cout<<"thread begin"<<endl;

	SOCKET temp = *((SOCKET*)lpp);

	char answer2[1024];

	int resp_leng2 =1024;      

	while(1)

	{ 

		resp_leng2= recv(temp,(char*)&answer2, 1024, 0); 

		if(resp_leng2>0)

		{

			answer2[resp_leng2] = '\0';

			cout<<answer2<<"    "<<resp_leng2<<endl;

			answer2[0]='\0';

		}

	}

}

*/

int main()

{

/*	hostent *phe;  

	char *p;   

	phe = gethostbyname("www.9481.com");  

	cout<<phe<<endl;

	if(phe!=NULL)  

	{

		p = *phe->h_addr_list; 

		cout<<p<<endl;

	}*/

	TcpSendHttp tc;

	tc.createHttpHead("POST http://www.9481.com HTTP/1.1\r\n");

	tc.createHttpHead("Accept:*/*\r\n");

	tc.createHttpHead("Accept-Language:zh-CN\r\n");

	tc.createHttpHead("Referer:http://www.9481.com/login.html\r\n");

	tc.createHttpHead("Content-Type:application/x-www-form-urlencoded\r\n");

	tc.createHttpHead("Accept-Encoding: gzip, deflate\r\n");

	tc.createHttpHead("Host:www.9481.com\r\n");

	tc.createHttpHead("Content-Length:38\r\n");

	tc.createHttpHead("Connection:close\r\n");

	tc.createHttpHead("Cookie:Hm_lvt_0b7a95f009a5d8ebf1f7d6dc9350d96d=1347852750151,1347853144851; Hm_lpvt_0b7a95f009a5d8ebf1f7d6dc9350d96d=1347853144851; ASPSESSIONIDQQASBDCR=KONJGNDDGEHOEMOLIDAAPLIC; loginErrTimes=9");

	tc.createHttpHead("Cache-Control: no-cache\r\n");

	tc.createHttpHead("User-Agent:Mozilla/5.0 (Windows NT.1) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5\r\n");

	tc.createHttpHead("\nusername:910612&password:910612&authCode: &\r\n");

	tc.connectWeb("59.54.54.254",80);

	int leng = tc.sendHttpHead();

	cout<<"发送字节数"<<leng<<endl;

	leng = tc.recvHttpHead();

	cout<<"接收字节数"<<leng<<endl;	

}