Esteemed monks, I'm running traceroute with open(), trying to read from the filehandle with select() and sysread(). The idea is to get the output in a nonblocking fashion.

The code below works in my Linux box. But I cannot get select to read anything in Windows Vista ( Activestate 5.10 ).

I'm pretty sure that I'm doing something inherently wrong with select and then sysread().

Can you comment on the code below and provide some options? Why is it not working with Windows? Thanks!! 
use strict;
use IO::Select;
use IO::Handle;
use Time::HiRes qw(usleep);

$| =1 ;
my $pingout ;
open($pingout, '-|', "tracert www.google.com");
 if($pingout){
     
            my $select = IO::Select->new();
            $select->add($pingout);
            while (1) { 
                print "loop\n";
                my $line;
                
                    if (my @ready = $select->can_read(0) ) {
                         
                        foreach(@ready){
                            $_->sysread($line, 2048);
                            print $line,$/;
                        }
                    }
                
                usleep(100000); # 100 ms
            }
}

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In reply to open,select,sysread for non-blocking traceroute by Proclus

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