请问:如何在VC里得到一个域名的IP地址.如,怎样得到http://www.sohu.com的IP地址

Question

请问:如何在VC里得到一个域名的IP地址.如,怎样得到http://www.sohu.com的IP地址

Answer 1

谢谢你,"raphyer(把脚印留在身后) "
能说详细点吗?举个例子?
谢谢

Answer 2

SOCKADDR_IN addr_in;
addr_in.sin_family = AF_INET;
addr_in.sin_port = htons(iPort);
USES_CONVERSION;
char* pszServer = W2A(bstrServer);
ULONG ulAddr = inet_addr(pszServer);
if( INADDR_NONE != ulAddr ) // ip
{
addr_in.sin_addr.s_addr = ulAddr;
}
else // 域名
{
hostent* pHost = gethostbyname( pszServer );
memcpy((char*)&addr_in.sin_addr,pHost->h_addr,pHost->h_length);
}

Answer 3

请问 (xiaohyy(醉大饿极)) :要包括哪些头文件

Answer 4

#include<winsock2.h>     WORD wVersionRequested;
      WSADATA wsaData;
      char name[255];
      CString ip;
      PHOSTENT hostinfo;
      wVersionRequested = MAKEWORD( 2, 0 );
sprintf(name,"%s","http://www.sohu.com");
      if ( WSAStartup( wVersionRequested, &wsaData ) == 0 )
      {            if( gethostname ( name, sizeof(name)) == 0)
            {
                  if((hostinfo = gethostbyname(name)) != NULL)
                  {
                        ip = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list);
                  }
            }
            
            WSACleanup( );
      } 

Answer 5

if (WSAStartup(0x202,&wsaData) == SOCKET_ERROR) { fprintf(stderr,"WSAStartup failed with error %d\n",WSAGetLastError()); WSACleanup(); return -1; }  if (port == 0){ Usage(argv[0]); }  // // Attempt to detect if we should call gethostbyname() or // gethostbyaddr()  if (isalpha(server_name[0])) {   /* server address is a name */ hp = gethostbyname(server_name); } else  { /* Convert nnn.nnn address to a usable one */ addr = inet_addr(server_name); hp = gethostbyaddr((char *)&addr,4,AF_INET); } if (hp == NULL ) { fprintf(stderr,"Client: Cannot resolve address [%s]: Error %d\n", server_name,WSAGetLastError()); WSACleanup(); exit(1); }

Answer 6

{
DWORD dwIP = INADDR_NONE;
PHOSTENT pHost = gethostbyname( (char *)pParam );
if(pHost == NULL)
return INADDR_NONE;
dwIP = inet_addr( inet_ntoa(*(IN_ADDR *)*pHost->h_addr_list) );
return dwIP;
}