C语言GET新浪文章，为什么返回的是一个Location地址，代码如下
#include "stdio.h"
#include "stdlib.h"
#include "winsock2.h"
#pragma comment(lib,"ws2_32.lib")
int main(int argc, char* argv[])
{
SOCKET hsocket;
SOCKADDR_IN saServer;
WSADATA wsadata;
LPHOSTENT lphostent;
int nRet;
char Dest[3000];
char* host_name="http://blog.sina.com.cn/s/blog_6871475201015bnr.html";
char* req="GET /s/blog_6871475201015bnr.html HTTP/1.1\r\n"
"User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET4.0C; .NET4.0E; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)\r\n"
"Host:blog.sina.com.cn\r\n\r\n";
// 初始化套接字
if(WSAStartup(MAKEWORD(2,2),&wsadata))
printf("初始化SOCKET出错！");
lphostent=gethostbyname(host_name);
if(lphostent==NULL)
printf("lphostent为空！");
hsocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
saServer.sin_family = AF_INET;
saServer.sin_port = htons(80);
saServer.sin_addr =*((LPIN_ADDR)*lphostent->h_addr_list);
// 利用SOCKET连接
nRet = connect(hsocket,(LPSOCKADDR)&saServer,sizeof(SOCKADDR_IN));
if(nRet == SOCKET_ERROR)
{
printf("建立连接时出错！");
closesocket(hsocket);
return 0;
}
// 利用SOCKET发送
nRet = send(hsocket,req,strlen(req),0);
if(nRet==SOCKET_ERROR)
{
printf("发送数据包时出错！");
closesocket(hsocket);
}
nRet=1;
while(nRet>0)
{
// 接收返回数据包
nRet=recv(hsocket,(LPSTR)Dest,sizeof(Dest),0);
if(nRet>0)
Dest[nRet]=0;
else
Dest[0]=0;
// 显示返回数据包的大小、内容
printf("\nReceived bytes:%d\n",nRet);
printf("Result:\n%s",Dest);
}
}
然后把上面这一句 char* host_name="http://blog.sina.com.cn/s/blog_6871475201015bnr.html";换成
char* host_name="www.baidu.com";又可以正常返回百度首页的数据，求高手指教，这是怎么回事啊
[解决办法]
char* host_name="http://blog.sina.com.cn/s/blog_6871475201015bnr.html";换成“blog.sina.com.cn”啊。host_name就是域名啊。这里需要将 host_name发送给DNS来解析获得IP地址。你发个url就获取不到正确的服务器地址了。
[解决办法]
gethostbyname 只能是域名, 不是 URL, 改成 gethostbyname("blog.sina.com.cn") 试试.
[解决办法]
