Is there a way to check when host leaves?

So, I've been making a multiplayer game, and, as expected (of course), when the host leaves, everything synced freezes for the peers. The problem is that, after this, these peers can't join a new room and I have to restart their game. Anyway to solve this?

Thanks in advance, this community is awesome and always helps me a lot.

Oh, so it actually kicks you, thanks, but then what do I need to do to make it so the player can join another room again?

Nevermind, I just fixed it. For anyone wondering, you have to leave the room and disconnect from signaling server (usually) before going thru the usual proccess, unless you just stay connected to signalling and don't try to connect again.