Introversion

I've checked Unnoficial FAQ, Defcon main page FAQ and both claim that you can play LAN/offline games without any internet access, that your key can be algorithmically checked offline for that. Well, for Linux it doesn't work. I click "new game" and only get chat window. I just checked windows version (never used it before) and there it works. Any ideas? Cause this is unnaceptable for me. I got a machine without net access and wanted to play against AI. And I can't.

Something is wrong with your setup. Play without network is possible, but play with broken network is not possible. If you have, for example, a lingering fixed-IP configuration for an unplugged ethernet card, Defcon will try to use that for its internal communication and will fail. Simply remove all network devices except loopback, and things should be fine.

All addresses from all interfaces removed, all interface to down state (ip l s down eth0):



NOT working, "new game", only chat window at the bottom.

Removed network card module:



NOT working, "new game", only chat window at the bottom.

Can't put it down more then that (net cards are builtin).

So something is wrong with Linux defcon.

EDIT: I just removed all the settings and authkey (~/.defcon) and run it in demo mode with network down. I can't start a new game there as well.
With network connection up everything works as it should, key get authorized and "New Game" start to work. With key in "Uknown" (offline) state it doesn't.

I don't know how things currently work in the Linux version (there have been changes at least on the Windows side), but can you do

? At least in earlier versions, if that worked, Defcon worked for local games.

Thank you!
That was it. I had `hostname` set in /etc/hosts to non loopback value.

But still game should fallback to 127.0.0.1 if net is down, not use `hostname` value.
Anyway, it works. Thanks.

You're welcome.

Havner wrote:But still game should fallback to 127.0.0.1 if net is down, not use `hostname` value.

Yes. And in fact, it shouldn't use the network at all

bert_the_turtle wrote: And in fact, it shouldn't use the network at all

Well, that's not neccesarily. It's not that uncommon for a network game to use TCP code even for single player games. That's exactly what's loopback is for. It's easier for a developer to reuse network code for single player game (that has server-client architecture) then to write single machine specific code.