Engine: Unreal Editor v5.4.4
Plugins: EOS OSS v1.0.0
Project: Unreal’s EOS OSS Sample
Hi there,
I’ve been trying to implement P2P multiplayer in our project by using the EOS OSS plugin but keep running into the same error when creating a lobby and when attempting to join a lobby:
LogEOSSDK: Error: LogEOSLobby: Invalid parameter EOS_Lobby_CopyLobbyDetailsHandleOptions.LocalUserId reason: is not a valid Product User ID, Result: EOS_InvalidUser
I’ve downloaded and setup Unreal’s EOS OSS sample project to see if the problem was my implementation, but on the sample project I get the same error under the same circumstances. I didn’t change any code besides what was needed to active P2P, according to the sample getting started documentation.
Looking at the log, it seems like EOS OSS is getting a combination of IDs instead of just the product user id, therefore creating an invalid product user id error:
LogOnlineSession: Warning: EOS: [FOnlineSessionEOS::SetLobbyMemberAttributes] Lobby Member with UniqueNetId [ce8da4a8aea941a6ab9a26e0e3656556|0002536845f84d8ba395f6ee9658d083] not found in Lobby Session with SessionId [60ab95de9d2644bd8611cb27c259322f]
LogEOSSDK: Error: LogEOSLobby: Invalid parameter EOS_Lobby_CopyLobbyDetailsHandleOptions.LocalUserId reason: is not a valid Product User ID, Result: EOS_InvalidUser
LogOnlineSession: Warning: EOS: [FOnlineSessionEOS::OnLobbyUpdateReceived] EOS_Lobby_CopyLobbyDetailsHandle not successful. Finished with EOS_EResult EOS_InvalidUser
LogEOSSDK: Error: LogEOSLobby: Invalid parameter EOS_Lobby_CopyLobbyDetailsHandleOptions.LocalUserId reason: is not a valid Product User ID, Result: EOS_InvalidUser
LogOnlineSession: Warning: EOS: [FOnlineSessionEOS::OnLobbyUpdateReceived] EOS_Lobby_CopyLobbyDetailsHandle not successful. Finished with EOS_EResult EOS_InvalidUser
On that first log, the first id prior to the “|” is the id from authenticating with Epic, the second one is the actual product user id, which I can also find in the dev portal when searching for this lobby.
I’ve also tested the EOS SDK Lobby sample and there I can create and join a session without this error, so it’s an error that seems to only exist in the EOS OSS plugin.
Does anyone have a solution for this or should I use the EOS SDK in Unreal directly?