"Connecting failed" with most CO servers

[kg333 10]

Hi all,

I lately have been stumped trying to get Arma 2 Combined Ops to connect to servers. I get as far as the "Joining game" screen, which stops with the "Connecting failed" error dialog. Occasionally, it will connect, but if I disconnect and try to reconnect to the same server, it will again get the "connecting failed" error.

I already have port 2302 forwarded as appropriate, and I have no problems connecting using vanilla Arma 2. I'm on a university network, so there may be routing issues outside my control, but I'd expect to not be able to connect at all if that were the problem.

Are there any other common causes of this error, other than port forwarding issues?

KG

EDIT: Nevermind, it appears I'm having more general problems, other programs are dropping connection as well.

Edited August 23, 2011 by kg333

[terox 316]

university network bandwidth is often choked and some, where they can block online gaming

[kg333 10]

In my case it's not, I've gamed for years on their connection without issue.

However, I have a guess: What they do throttle is computers making large numbers of outgoing connections, to cut down on torrenting. Does the ArmA 2 server browser create an individual connection to each server to check mods, players, and latency? If so, that number of connections is likely enough to trigger their throttling.

Does anyone know for sure if ArmA 2 attempts to create outgoing connections to every server when looking for games?

KG

[eddieck 10]

Does anyone know for sure if ArmA 2 attempts to create outgoing connections to every server when looking for games?

Yes, it does. I've confirmed this with Wireshark.

[kg333 10]

Yes, it does. I've confirmed this with Wireshark.

Thanks very much for posting. That's almost definitely the problem then, spawning 100+ outgoing connections in a few seconds would certainly trigger throttling from my university.

Fortunately ArmA doesn't seem to maintain them, though, so I just have to wait a minute or so while the network throttle gets lifted.

KG

[.kju 3244]

You can use external apps to look for server.

The connection flooding while in the ingame arma server browser easily causes a

temporary connection ban in uni networks in Germany.