round robin dns's and ip addresses
Barry Margolin
barmar at alum.mit.edu
Sat Aug 13 00:06:45 UTC 2005
In article <ddinf6$2370$1 at sf1.isc.org>,
"yawnmoth" <terra1024 at yahoo.com> wrote:
> If a particular domain is using a round robin DNS and has 2+ IP
> addresses associated with it, is there any way I could get a list of
> all the IP addresses associated with the domain? gethostbyname will
> return one IP address, but I'd like all of them...
gethostbyname() should return all of them. The hostent.h_addr_list is
a NULL-terminated array containing all the addresses. If you're using
hostent.h_addr, that's a macro that just refers to the first element of
the array, for backward compatibility with the original design of
gethostbyname(), which only returned one address.
--
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
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