Bareword "ARG" not allowed while "strict subs" in use at foo.pl line 2
+0.
Execution of foo.pl aborted due to compilation errors.
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Update: how embarrassing, shmem is right - it was a copy-paste error on my side. With the correct code I can reproduce the problem on both platforms mentioned above.

POE::Wheel::SocketFactory doesn't have a put method. It seems you are expecting a different object (a socket, no socket factory). My POE-fu isn't good enough to suggest a solution, though.

Bareword "ARG" not allowed while "strict subs" in use at foo.pl line 20.

Copy-paste error. That word on line 20 is ARG0, which is a constant sub invocation (returns 10).

Use the download link...

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

Having tested this out, I believe that either: the RemoteAddress or RemotePort settings to the POE::Component::Client::TCP constructor are wrong; or: the POE::Component::Client::TCP part is taking a little while to establish a connection. Either way we can check the value of $heap->{connected} in the client session to see if we are connected yet.

Here's an altered version that shouldn't bail out if the client component fails to establish a connection.

#!/usr/bin/perl

use warnings;
use strict;
use POE qw(Component::Server::TCP Component::Client::TCP);

# Spawn the forwarder server on port 1110.  When new connections
# arrive, spawn clients to connect them to their destination.

POE::Component::Server::TCP->new(
    Port => 1110,

    ClientConnected => sub {
        my ( $heap, $session ) = @_[ HEAP, SESSION ];
        #logevent( 'server got connection', $session );
        spawn_client_side();
    },

    ClientInput => sub {
        my ( $kernel, $session, $heap, $input ) = @_[ KERNEL, SESSION,
+ HEAP, ARG0 ];
        #logevent( 'server got input', $session, $input );
        $kernel->post( $heap->{client_id} => send_stuff => $input );
    },

    ClientDisconnected => sub {
        my ( $kernel, $session, $heap ) = @_[ KERNEL, SESSION, HEAP ];
        #logevent( 'server got disconnect', $session );
        $kernel->post( $heap->{client_id} => "shutdown" );
    },

    InlineStates => {
        send_stuff => sub {
            my ( $heap, $stuff ) = @_[ HEAP, ARG0 ];
            #logevent( "sending to server", $_[SESSION] );
            $heap->{client}->put($stuff);
        },
        _child => sub {
            my ( $heap, $child_op, $child ) = @_[ HEAP, ARG0, ARG1 ];
            if ( $child_op eq "create" ) {
                $heap->{client_id} = $child->ID;
            }
        },
    },
);

sub spawn_client_side {
    POE::Component::Client::TCP->new(
        RemoteAddress => '192.168.0.200',
        RemotePort    => 81,

        Started => sub {
            $_[HEAP]->{server_id} = $_[SENDER]->ID;
        },

        Connected => sub {
            my ( $heap, $session ) = @_[ HEAP, SESSION ];
            #logevent( 'client connected', $session );
        },

        ConnectError => sub {
            my ( $syscall, $errnum, $errstr ) = @_[ ARG0 .. ARG2 ];
            warn "$syscall $errnum $errstr\n";
        },

        ServerInput => sub {
            my ( $kernel, $heap, $session, $input ) = @_[ KERNEL, HEAP
+, SESSION, ARG0 ];
            #logevent( 'client got input', $session, $input );
            $kernel->post( $heap->{server_id} => send_stuff => $input 
+);
        },

        Disconnected => sub {
            my ( $kernel, $heap, $session ) = @_[ KERNEL, HEAP, SESSIO
+N ];
            #logevent( 'client disconnected', $session );
            $kernel->post( $heap->{server_id} => 'shutdown' );
        },

        InlineStates => {
            send_stuff => sub {
                my ( $heap, $stuff ) = @_[ HEAP, ARG0 ];
                #logevent( "sending to client", $_[SESSION] );
                $heap->{server}->put($stuff) if $heap->{connected};
            },
        },
    );
}

sub logevent {
    my ( $state, $session, $arg ) = @_;
    my $id = $session->ID();

    print "session $id $state ";
    print ": $arg" if ( defined $arg );
    print "\n";
}

warn 'running';
$poe_kernel->run();
exit 0;
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