SOCKET 模拟HTTP客服端

最新推荐文章于 2022-11-03 12:25:09 发布

原创最新推荐文章于 2022-11-03 12:25:09 发布 · 1.2k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#SOCKET

本文介绍如何使用SOCKET编程模拟HTTP客户端，通过抓包获取HTTP请求头并解析，实现与服务器的连接及数据交换。

SOCKET 模拟HTTP客服端

HTTP 请求头部分析（详细的看代码，自己抓包分析）

GET http://www.baidu.com/ HTTP/1.1

Accept: */*

Host: 58.217.200.15

步骤：1：建立socket套接字，并连接http服务器
      2：发送http请求
      3：接受数据
int getpageHttp(const char* host_addr, const int host_port)
{
	WSADATA wsaData;
   if (WSAStartup(MAKEWORD(2,0), &wsaData) != 0)
	{
		cout<<"windows socket startup failed"<<endl;
		return -1;
	}
	sockaddr_in myaddr;
	myaddr.sin_family = AF_INET;
	myaddr.sin_port = htons(host_port);
	myaddr.sin_addr.S_un.S_addr = inet_addr(host_addr); //web服务器的ip地址，58.217.200.15 为百度的ip地址
	memset(&(myaddr.sin_zero), 0, sizeof(myaddr.sin_zero));
	SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);

	if (sock == -1)
	{
		cout<<"create socket failed"<<endl;
		return -1;
	}

	if (connect(sock, (struct sockaddr*)&myaddr, sizeof(struct sockaddr)) == -1)
	{
		cout<<"connect function failed"<<endl;
		
	}

  //下面是http头的格式，其中GET是请求方法，不可缺少，其余参数可以参考相关文档 ,本人是抓包获取的
	string sendData = "GET HTTP/1.1 /r/n";
	sendData += "HOST: www.baidu.com /r/n";  //这里时百度的
	sendData += "Connection: Keep-Alive /r/n"; 
	sendData += "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8/r/n";
    sendData += "User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36/r/n";
    sendData += "Referer: http:///baidu.com// /r/n";  
    sendData += "Accept-Encoding: gzip,deflate,sdch/r/n";
    sendData += "Accept-Language: zh-CN,zh;q=0.8,en;q=0.6/r/n";
    sendData += "Cookie: BAIDUID=B18373DE96539D7D60F9515B9EBBAC43:FG=1; BD_TMP_CK=true; BDUSS=5pTWhVQmJTSzU5ZXVFUE1jNTRNaXpGanVITDhNZ3VBOS1IekdweTRFVmpsTmRTQVFBQUFBJCQAAAAAAAAAAAEAAADyv1YRc3VhbmZhamluZ3NhaQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGMHsFJjB7BSMn; H_PS_LC=22_3; cflag=65535:1; H_PS_TIPCOUNT=5; H_PS_TIPFLAG=; BD_CK_SAM=1; H_PS_PSSID=4788_1456_4666_4263_4759_4678/r/n";
    sendData += "/r/n";
	char buf[64];

	FILE *f;
    if( (f=fopen("1.data","w"))==NULL)
	{
	  cout<<"file not open"<<endl;
	  return 0;
	}

	if (send(sock, sendData.c_str(), sendData.length(), 0) == -1)
	{
		cout<<"send function failed"<<endl;
		return -1;
	}

	cout<<"开始接受数据"<<endl;
	while(recv(sock, buf, 64, 0) > -1)
	{
		//cout<<"获取数据中"<<endl;
	    fwrite(buf,sizeof(char),64,f);
    }
	
	return 0;
}