#!/opt/perl/bin/perl
use strict;
use utf8;
use Event;
use AnyEvent;
use Net::XMPP2::Client;

sub version_req {
   my ($con, $dest) = @_;

   $con->send_iq (
      get => { 
         defns => 'version',
         node => { name => 'query', ns => 'version' }
      },
      sub {
         my ($node, $error) = @_;
         if ($error) {
            warn "*** DISCO VERSION ERROR $dest: " . $error->string . "\n";
         } else {
            my (@name) = $node->find_all ([qw/version query/], [qw/version name/]);
            my (@ver)  = $node->find_all ([qw/version query/], [qw/version version/]);
            print "$dest: ".$node->attr ('from').": name: " . $name[0]->text . " version: " . $ver[0]->text . "\n" if @name and @ver;
            print "$dest: no version\n" unless @name and @ver;
         }
      },
      to => $dest
   );
}

my $j = AnyEvent->condvar;
my $cl = Net::XMPP2::Client->new;
$cl->add_account ('net_xmpp2@jabber.org', 'test');
$cl->reg_cb (
   session_ready => sub {
      my ($cl, $acc) = @_;
      version_req ($acc->connection, $ARGV[0]);
      0
   },
   disconnect => sub {
      my ($cl, $acc, $h, $p, $reas) = @_;
      print "disconnect ($h:$p): $reas\n";
      1
   },
   error => sub {
      my ($cl, $acc, $err) = @_;
      print "ERROR: " . $err->string . "\n";
      1
   },
   message => sub {
      my ($cl, $acc, $msg) = @_;
      print "message from: " . $msg->from . ": " . $msg->any_body . "\n";
      1
   }
);
$cl->start;
$j->wait;