troubleshooting Question

how to use getnameinfo() under WinXP?

Avatar of EyeOfHell
EyeOfHell asked on
Microsoft Development
13 Comments1 Solution2256 ViewsLast Modified:
Hello. I need to use this function insteda of gethostbyaddr(), that was obsoled since WinXP, to get machine name from it's IPv4. For example, if i have
int nIP=inet_addr("216.239.39.101"), i want to end up with string "www.google.com".

I'm trying to use this function this way:

//-------------------code example ----------------------

sockaddr_in tAddr;
memset(&tAddr, 0, sizeof(sockaddr_in));
tAddr.sin_family=AF_INET;
// 216.239.39.101 - known IP of www.google.com, for test
tAddr.sin_addr.S_un.S_addr=inet_addr("216.239.39.101");

char szHostName[1025];
int nErr=getnameinfo(&tAddr, sizeof(sockaddr_in), szHostName, 1025, 0, 0, 0);

//------------------------------------------------------

Unfortunately, this return 11004 in nErr and "216.239.39.101" in szHostName instead
of "www.google.com". What i'm doing wrong?
ASKER CERTIFIED SOLUTION
alexo

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