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04.14.2008 at 09:07AM PDT, ID: 23320767
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8.8

simple client/server socket example only works on same machine

Asked by twrfte in Perl Programming Language, Linux Programming, Unix Systems Programming

Tags:

When I try running the client on a different machine from the server, the IO::Socket new method returns 'connection refused'.  Here is the server:

use IO::Socket::INET;

my $s = IO::Socket::INET->new(
    LocalHost => wolf,
    LocalPort => 7071,
    Proto     => 'tcp',
    Listen    => 16,
    Reuse     => 1
    );

die "Could not create socket: $!\n" unless $s;

my ( $ns, $buf, $name, $port );
while( $ns = $s->accept() ) {
    while ( defined( $buf = <$ns> ) )
    {
        $name = gethostbyaddr( $ns->peeraddr, AF_INET );
        $port = $ns->peerport;
        print "[$name $port] $buf";
        print $ns "$.: $buf";
    }
}

and here is the client:

use IO::Socket::INET;

my $s = IO::Socket::INET->new(
    PeerAddr => wolf,
    PeerPort => 7071,
    Proto    => 'tcp'
    );

die "Could not create socket: $!\n" unless $s;

print "Client ready to send\n";
while( <STDIN> ) {
    print $s $_;
    print scalar <$s>;
}

close $s or die "Can't close socket ($!)\n";


The client and server are ubuntu linux machines running on the same LAN.
I fumbled a bit around trying to troubleshoot this and got nowhere.  Any help would be greatly appreciated.

thanks.
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About this solution

Zones: Perl Programming Language, Linux Programming, Unix Systems Programming
Tags: perl io:socket
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Solution Provided By: ravenpl
Participating Experts: 1
Solution Grade: A
 
 
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