GNU Backgammon

Forum Archive : GNU Backgammon

Playing two computers against each other

From:   Stanley E. Richards
Date:   11 March 2008
Subject:   Setting up GNU vs GNU
Forum:   GammOnLine

How can one set two computers to play GNU against each other?


Jon  writes:

You need to set one up to listen, can't remember the command off hand,
external maybe? Then set the player on the other computer as external (and
put in the ip address).

I've got the details somewhere...


Stanley Richards  writes:

Jon tried to help me, but I am still having difficulty. I am trying to
connect a remote computer to my local computer and play GNU backgammon.
Under File > New > Modify Player settings, there is an external option with
a text block next to Socket.

I am not sure as to what to type in the Socket text box. I do not
understand what information to type in the Socket text box. Perhaps,
somebody could provide an example of the correct form. Any entry that I
have tried has resulted in "An Address Incompatible with Requested
Protocol" error.


Jon  writes:

I'm at my computer so can give you some better advice, first test on one
machine by:

1. Starting gnubg in command line mode (ideally), and type external

   You should get a message about waiting for a connection.

2. Start another gnubg (graphic one this time) and set one player to
   external or type set player 0 external

   This should work (i.e. play a game and the external player should work).
   Make sure none of the player names have spaces in - as this failed for

The socket address has to be in the form ip:port where ip is the ip address
of the computer (or possibly computer name) and port is the port to connect
on, 80 is probably a save port (html). You can find the ip addresses by
typing ipconfig in a command box.
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