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Full Discussion: host name to IP address
Top Forums Programming host name to IP address Post 302179769 by cleopard on Friday 28th of March 2008 12:49:59 PM
Old 03-28-2008
I tried this:

struct in_addr host_addr
.
.
.
.

host_addr.s_addr = inet_addr(cat_str);
printf("IP address ==> %s\n", inet_ntoa(host_addr));


All I get is a series of 255.255.255.255 for each of the hosts I try ('cat_str' being something like 'mail.gnu.org'). Maybe I need to pass 'cat_str' into 'gethostbyname' and take the 'host_aliases' out of that and pass it into inet_addr. I guess I'm having a little trouble with the terminology being used by these man pages and making sure I know which form of the address they are referring to.
 

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avahi-resolve(1)					      General Commands Manual						  avahi-resolve(1)

NAME
avahi-resolve - Resolve one or more mDNS/DNS host name(s) to IP address(es) (and vice versa) using the Avahi daemon SYNOPSIS
avahi-resolve --name host-name ... avahi-resolve-host-name host-name ... avahi-resolve --address address ... avahi-resolve-address address ... DESCRIPTION
Resolve one or more mDNS/DNS host name(s) to IP address(es) (and vice versa) using the Avahi daemon. OPTIONS
When passing -n, specify one or more fully qualified mDNS/DNS host name(s) (e.g. "foo.local") to resolve into IP addresses on the command line. When passing -a, specify one or more IP address to resolve into host names. avahi-resolve-host-name is equivalent to avahi-resolve --name. avahi-resolve-address is equivalent to avahi-resolve --address. -n | --name Translate one or more fully qualified host names into addresses. -a | --address Translate one or more addresses into fully qualified host names. -v | --verbose Enable verbose mode. -6 When resolving a host name, look for IPv6 addresses exclusively. -4 When resolving a host name, look for IPv4 addresses exclusively. -h | --help Show help. -V | --version Show version information. AUTHORS
The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/ SEE ALSO
avahi-publish-address(1), avahi-daemon(8) COMMENTS
This man page was written using xml2man(1) by Oliver Kurth. Manuals User avahi-resolve(1)
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