gethostbyname problem

Question

I wish to use "gethostbyname" in my Suse m/c but it is not returning any structure.

but on the other systems it is working fine what could be the issue with my m/c ??

Any code would be helpful, some debugging stuff (gdb), or simple print statements would help a lot this community to solve your problem. — bua, Nov 03 '09 at 13:28
What is the value of `h_errno` after the call? What does `getent ` give on shell command line? — mouviciel, Nov 03 '09 at 13:32
Or actually getent hosts, not ahosts, since he's asking about the obsolete gethostbyname. — Peter Cordes, Dec 10 '09 at 01:12

score 3 · Answer 1 · answered Nov 03 '09 at 13:33

3

Note that the new way of doing it is using getaddrinfo see beej guide

answered Nov 03 '09 at 13:33

Aif

11,015
1
30
44

score 0 · Answer 2 · answered Nov 05 '09 at 05:53

0

To gethostbyname to work an entry in /etc/hosts to be made ... :) I was missing that thanks for answers.

answered Nov 05 '09 at 05:53

Arpit

4,259
10
38
43

Needing an entry in your hosts file means your DNS server isn't working right. Are you sure that's not the real source of the problem? – Matthew Iselin Nov 05 '09 at 05:56
That is the source of problem I passing hostname but there was no entry in /etc/hosts so it was not able to resolve the IP . – Arpit Nov 06 '09 at 10:23

score 0 · Answer 3 · answered Nov 05 '09 at 23:20

If “ping somehost” on the command line works for you, gethostbyname should work, too, when used correctly. Read manpage resolv.conf(5) for details on how to configure name resolution.

If you get ping working but your code still fails, please post an example.

gethostbyname problem

3 Answers3