To Almut:

Thanks for pointing out the problem. I am trying to solve it as you explained. But it seems that Term::ReadKey module non-blocking readline feature is NOT well supported in Windows either.

To rowdog:

Yes, I read the doc, unforturnely, my script works under windows, but fork() is NOT well supported in Wins. I tested it under both Ubuntu and Windows XP with the same code. 
#!/usr/bin/perl

my $i = 0;
my $in;

while( 1 ){
    ++$i;
    
    my $pid = fork();
    if ( $pid ){
        $in = <>;
        chomp( $in );
        print "Child: $in\n";
    }
    else{
        print "Parent: $i \n";
        sleep 5;
    }
}

[download]
In Linux, it works fine, while screen update still hangs at reading input, requires <enter> key to trigger the update.

Thanks,

Yun

In reply to Re^2: Sync messages for chatting peers by kzle
in thread Sync messages for chatting peers by kzle

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