The hardest part to establish peer to peer streaming like this is actually making sure all participants can see your IP address. Residential and cellular networ

The hardest part to establish peer to peer streaming like this is actually making sure all participants can see your IP address. Residential and cellular network are often behind CGNAT which make peer to peer connections almost impossible without using dedicated relay servers (e.g. SRS like other mentioned). Even if you have a publicly routable IP address, your router configuration might cause issues with peer to peer connections and it's non-trivial for average layperson to fix by themselves.