VACCheckTimedOut from OnValidateAuthTicketResponse when validating session ticket

[TexHik]

I'm using https://github.com/DoctorMcKay/node-steam-user lib to generate session tickets for specific game in steam.

Flow on my client is simple: 

client.logOn()
client.setPersona(SteamUser.EPersonaState.Online)
client.gamesPlayed(target_game_appId, true)
client.cancelAuthSessionTickets(target_game_appId);
client.endAuthSessions(target_game_appId)
let ticketToken = await act_acc.steamClient.createAuthSessionTicket(target_game_appId);

 

Then i send this ticket to my game server, where my custom plugin handles it, with this flow:

SteamServer.BeginAuthSession(ticketToken, steamid);

SteamServer.UpdatePlayer(steamId, username, 0);

After this, i get on server OnValidateAuthTicketResponse event with code 0 - Ok for this steamid.

But after a minute or so, OnValidateAuthTicketResponse event fires agait for same steamid with code 5 - VACCheckTimedOut.

How can i fix this, or why does it happens?

When i joins the server with native game client its working fine, and no second event is fired.

Rodney, help please

 

Edited October 27 by TexHik

[Dr. McKay]

You would need to implement the client side of VAC, in its entirety, flawlessly. Good luck!

[TexHik]

Is there any examples, or api of vac?

I cant find any api or examples of vac in steamworks, but game developers somehow implementing it?

[Dr. McKay]

Game developers don't implement VAC; the Steam client takes care of that fully. Game devs just opt into using it, at which point the Steam backend starts sending modules for the Steam client to execute properly and return responses for.

[TexHik]

Thank you))