(ichimunki) Re: Querying a Server Periodically

[ichimunki]

This code could be adapted to a stateless protocol like HTTP for periodic server queries, I think.

#!/usr/bin/perl -w
use strict;
use Tk;

#set up our window and some interactive feature
my $mw = Tk::MainWindow->new();
my $button = $mw->Button( -text => 'Pop', -command => sub {print "pop!
+\n";} )->pack();

#set up our periodic task.
#this executes faithfully every x milliseconds
$mw->repeat(5000, \&waiting );

MainLoop;

sub waiting {
    print "waiting...\n";
}

5000 is the milliseconds amount (so it's a very big number for only 5 seconds, but you can also give number as 5 * 1000 to remind yourself and ease figuring out longer intervals. Give this small script a try, as long as you don't mind locking up the client while the updates are happening you don't have to resort to process forking like the Tk chatterbox does.