StartBroadcastDiscovery

I am trying to get this to work on iOS to get multiple iOS devices to connect to each other.

I have this working when I broadcast from a Windows computer to other computers and iOS devices.

When I run StartBroadcastDiscovery on an iOS device I get “8” back from the out error in StartBroadcastDiscovery.

What is error 8?
Has anyone gotten StartBroadcastDiscovery to work on iOS?

For anyone that has this same problem, to get it to work, under Player Settings for iOS you have to select IL2CPP for the Scripting Backend. It does not work using Mono2x