Emit a warning when trying to set ReplicationFocus on the client

[XAXA]

I’m fairly new to using content streaming (StreamingEnabled) and I encountered what I thought was a bug:

Content streaming (StreamingEnabled) does not work at all if the player doesn't have a Character

I’m working on a game that doesn’t have a character and needs to have content streaming (StreamingEnabled = true). However, when I try to do RequestStreamAroundAsync while the player doesn’t have a character (because CharacterAutoLoads is set to false when they join the game), nothing loads at all. I tried to use ReplicationFocus, but since nothing was loading at all I had nothing to set it to. Creating a local part and setting the ReplicationFocus to that did nothing. Additionally, when I cal…

It turns out that I was setting ReplicationFocus on the client when it should be set on the server. In my defense, I thought it didn’t matter where this was set since players can call RequestStreamingAroundAsync arbitrarily anyway.

Anyway, it would be good if attempting to set this property from the client emitted a warning in the output so that this programming mistake can be detected easier in the future.

[XAXA]

Originally I had thought that you can do RequestStreamAroundAsync from the client, but it turns out that I was wrong about that, too!

Maybe RequestStreamAroundAsync should also emit a warning when called from the client.