I was trying to make an iOS app with real-time collaboration using Realm Mobile Platform (Swift 3) and got stuck with lack of docs and examples. At the moment I have user authentication through realm object server. I can sync data between server and all users. Now I want two users to connect within a session, and then to sync data between them like it was done in their drawing demo (watch the video on https://realm.io )
Realm Mobile Platform doesn't support sharing the data between different users yet. Partially resolved by this PR https://github.com/realm/realm-cocoa/pull/4275.
So for now, you should share one SyncUser between multiple people to share session like a draw app demo.