IO::Select is what you want.

The following code can show you some basic ideas of IO::Select. Follow those steps:

1. Run perl -w server.pl 3000 1
2. Run perl -w server.pl 3001 10
3. Run perl -w client.pl

Observe the client, see how it receives from server 1 (the faster guy), without being locked by the slower guy (server 2).

server

use strict;
use warnings;

use IO::Socket::INET;

my $server = IO::Socket::INET->new(Proto => "tcp", LocalAddr => "local
+host", LocalPort => $ARGV[0], Listen => 10);
my $connection = $server->accept();
print "Connected\n";
while (1) {
    print $connection "$ARGV[0]\r\n";
    print "sent $ARGV[0]\n";
    sleep($ARGV[1]);
}
[download]

client

use strict;
use warnings;

use IO::Socket::INET;
use IO::Select;

my $connection1 = IO::Socket::INET->new(PeerAddr => "localhost", PeerP
+ort => 3000, Proto => "tcp");
my $connection2 = IO::Socket::INET->new(PeerAddr => "localhost", PeerP
+ort => 3001, Proto => "tcp");

my $selector = IO::Select->new();
$selector->add($connection1);
$selector->add($connection2);

while (1) {
    my @readers = $selector->can_read(0);
    for my $reader (@readers) {
        my $line = <$reader>;
        print $line;
    }
}
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.