Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister
 
PerlMonks  

How can I mix Term::ReadLine::Gnu and IO::Sockets to create a telnet/mud client?

( #521219=categorized question: print w/ replies, xml ) Need Help??
Contributed by jettero on Jan 05, 2006 at 14:45 UTC
Q&A  > network programming


Description:

It seems like this should be a relatively simple thing to do. If feels like it should be 30 lines. However, all my attempts to get this to work have made me feel like a real perl newbie. To tell you the truth, I can't even get a simple two threaded socket to work.

More than once I considered giving up and just using C... Please tell me that's not the best option!

Answer: How can I mix Term::ReadLine::Gnu and IO::Sockets to create a telnet/mud client?
contributed by jettero

I just hate answering my own question, because I want to see how someone better at this sort of thing might do it. But I also don't want this question to disappear.

This is a simple IGS client ...

#!/usr/bin/perl use strict; use Term::ReadLine; use IO::Socket; use IO::Select; use threads; use threads::shared; ## This is the IGS go server. Welcome to text mode. ## You must create a username on their website to get this to work my @pair = (qw(igs.joyjoy.net 6969)); my $cmds : shared = ""; my $prompt : shared = "igs> "; my $done : shared = 0; my $term = new Term::ReadLine "igs"; my $listener = new threads( \&listener ); &sender; $listener->join; exit; sub sender { while( defined(my $line = $term->readline($prompt)) ) { lock $cmds; $cmds .= "$line\n"; return if $done; } } sub listener { my $sock = new IO::Socket::INET( PeerAddr => $pair[0], PeerPort => + $pair[1], Proto => "tcp" ) or logger->error("pfft: $!"); my $sele = new IO::Select; my $eb_count = 0; my $last = time+60; $sele->add( $sock ); while( $sock->connected ) { if( $sele->can_read(0.1) ) { my $buf = undef; my $sock_addr = recv( $sock, $buf, 1024, 0 ); if( not defined $sock_addr ) { die "socket error"; } if( not $buf ) { #print "empty \$buf...\n"; if( (++ $eb_count) >= 20 ) { warn "connection terminated\n(return to quit)\n"; $done = 1; return; } } our $ayt; $ayt -- if $ayt and $buf =~ s/(?:\s*|\b)yes\s*(?=\n)//s; $prompt = $1 if $buf =~ s/([^\r\n]+?)$//s; if( $buf ) { print $buf; $term->set_prompt( $prompt ); $term->forced_update_display; $eb_count = 0; } } if( $cmds ) { lock $cmds; print $sock $cmds; $cmds = ""; } if( $last+60 < (my $now = time) ) { our $ayt ++; print $sock "ayt\n"; $last = $now; } } shutdown $sock, 2; }

Please (register and) log in if you wish to add an answer



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • 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! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, 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, 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:
    & &amp;
    < &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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others romping around the Monastery: (15)
    As of 2015-07-06 13:33 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (74 votes), past polls