You never had the opportunity to accept any connection from the client side. Add $sock to IO::Select is no good, as it is not an "active channel" yet. Add the accept(), plus fix some minor syntax stuff, your code works.
use strict;
use warnings;
use IO::Socket;
use IO::Select;
my $sock = IO::Socket::INET->new(
Proto=>"tcp",
LocalHost=>"localhost",
Listen=>16,
Reuse=>1,
LocalPort=>3000
) or die("Could not create socket!\n")
+;
my $connection = $sock->accept();
my $readSet = new IO::Select();
$readSet->add($connection);
while(1) {
my @rhSet = IO::Select->select($readSet, undef, undef, 0);
foreach my $rh (@{$rhSet[0]}) {
my $buf=<$rh>;
if($buf)
{
printf "$buf";
} else
{
$readSet->remove($rh);
close($rh);
}
}
}
Client side test code:
use IO::Socket;
my $sock = IO::Socket::INET->new(
Proto=>"tcp",
PeerHost=>"localhost",
PeerPort=>3000
) or die("Could not create socket!\n")
+;
print $sock "abcd\n";
Well, I leave it to you to add back the code to accept further connections.
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