This module allows to use Steam session invites in UE4 project
FOnlineSessionSteam::CheckPendingSessionInvite tries to parse "+connect ", while FOnlineSessionSteam::GetSteamConnectionString generates "-SteamConnectIP="
Download repository to project Source folder
Add "SteamConnectCmdLineFix" to ExtraModuleNames in TargetRules
ExtraModuleNames.AddRange(new string[] { ..., "SteamConnectCmdLineFix" });