Subj : Queues vs. Sockets
To   : Deuce
From : MCMLXXIX
Date : Tue Apr 29 2008 08:39 am

  Re: Queues vs. Sockets
  By: Deuce to MCMLXXIX on Tue Apr 29 2008 01:07:28

 >   Re: Queues vs. Sockets
 >   By: Deuce to MCMLXXIX on Tue Apr 29 2008 12:36 am
 > 
 >  > Yes, you have one node bind/listen on a port and another node connect to
 >  > it. But it sounds like what you want is many nodes connected to many othe
 >  > nodes. If reliability isn't needed AND it doesn't need to work on
 >  > multisystem installs, slicing off a part of the localnet and using
 >  > broadcase would most likely be easiest.  Basically, have each node bind t
 >  > a known port on 127.0.0.X where X is the node number.  I think XP has an
 >  > issue with this though... see:
 >  > http://support.microsoft.com/default.aspx?scid=kb;[LN];884020
 >  >
 >  > I'll see what I can whip up quickly for an example...
 > 
 > load("sbbsdefs.js");
 > load("sockdefs.js");
 > 
 > var s=new Socket(SOCK_DGRAM, "InterNode");
 > if(!s.bind(5000, "127.0.0."+bbs.node_num)) {
 >         writeln("Bind failed: "+s.error);
 >         exit(1);
 > }
 > if(!s.listen()) {
 >         writeln("Listen failed: "+s.error);
 >         exit(1);
 > }
 > writeln("Q to quit or # to send message to node");
 > 
 > while(1) {
 >         var k=console.getkey(K_NONE, 100);
 >         if(k.toUpperCase()=='Q')
 >                 break;
 >         if(parseInt(k) > 0) {
 >                 console.write(": ");
 >                 var msg=console.getstr("", 77);
 >                 s.sendto(msg,"127.0.0."+k, 5000);
 >         }
 >         if(s.data_waiting) {
 >                 var d;
 >                 d=s.recvfrom();
 >                 writeln("Message from "+d.ip_address);
 >                 writeln(d.data);
 >                 writeln("");
 >         }
 >         writeln("Loop!");
 > }
 > 
 > 
 > This does NOT work under FreeBSD since you cannot actually listen on any
 > loopback address except 127.0.0.1... not sure of other OSs.  Failing that, y
 > can use port number X+bbs.node_num and just not be able to broadcast... whic
 > may be enough.  Fiddle with the 5000 instead of 127.0.0. in the script.
 > 
 > TCP gets trickier.  :-)
 > 

Ok that makes sense.  I'll see what I can do with it. Thanks!

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