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grasmanek94 / UniverseLAN

UniverseLAN is a GOG Galaxy wrapper which allows LAN / Direct IP connections for games using Galaxy Multiplayer
MIT License
53 stars 2 forks source link

MechWarrior 5: Mercenaries, game version 1.1.361, GOG SDK 1.139.2 #7

Open Artipep opened 1 week ago

Artipep commented 1 week ago

Hello. The same problem as the user OddPrograms, MechWarrior 5: Mercenaries game version 1.1.361. The game starts, but in the game it says offline mode and when you press the co-op button it says: failed to login to online services.

Artipep commented 1 week ago

After some testing and using other emulators, I found out that when I press the co-op button, the game makes a call to GetEncryptedAppTicket, and if nothing is returned, the game writes that it was not possible to connect to online services. Some people said that the game may use an authorization server, which makes it impossible to use the emulator to play on a local network.

grasmanek94 commented 1 week ago

Ah, if it makes a call to encrypted app ticket then it probably relies on some other service like Steam, Epic Online Services (EOS), XBOX live (XBL, I think it's called PlayFab now) etc.. :( There's not much to do in such a case (unless there are some options in the game to not use those services).

Usually GOG generates a 'ticket' for the game, which it receives, and then with that ticket the game can connect to the 'real' multiplayer service.

For Steam there already exist alternatives that allow LAN play. As for EOS or XBL that would be a future project maybe in a few years - if no one else beats me to it.

Thanks for your time / investigation efforts! But - when I have some spare time, I will also take a look to make sure it really does not support GOG-only multiplayer.