gethostbyaddr() does not return any info

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#1960

From: Kris
Date: Tue, 15 May 2007 08:46

32 lines
1452 bytes

Hi,

I'm attempting to obtain the NetBIOS name of given IP address (which is 
a NAS device in my LAN).

However, the gethostbyaddr() call always returns NULL and the 
WSAGetLastError() returns 6 (=WSA_INVALID_HANDLE).

Does anybody know what I'm doing wrong ? The code below shows following 
output:

Address=1711280300
RemoteHost=00000000
Error=6

struct hostent* RemoteHost;
unsigned int Address;
char host_name[]="172.16.0.102";

Address=inet_addr(host_name);
DEBUG("Address=%d",Address);

RemoteHost=gethostbyaddr((char*)&Address,4,AF_INET);
DEBUG("RemoteHost=%08X",RemoteHost);

int Error=WSAGetLastError();
DEBUG("Error=%d",Error);


Thanks,

Kris

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