this post was submitted on 30 Jun 2025
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Is a connection between 3+ people still p2p? Or is there another term for it?
I don't know how this would work over the internet though.
On a LAN you could use multicast, but I don't think ISPs support multicast, it seems like it would be an easy way to DoS. But I honestly don't know.
So, if you can't multicast, the way to have serverless multi-user video calls would be to have a separate video feed for each receiver, which I can see using more resources than through a server that would replicate the stream to all the receivers. Of course this is dependant on distance, even without multicast it consumes more resources if everyone is in the same LAN.
There can be an unlimited no. of connections (or peers). Remember the bittorrent days, where you could seed to and download files from many peers simultaneously? You can do the same with data streams, f.ex. video and audio. Try Keet if you want to see a practical example.
We don't need data centres to share files, chat, do video calls, live streaming, etc.
I'm not talking about the technical possibility. Of course you can have multiple video stream, one per participant.
I'm saying that without multicast, it can be more resource intensive than having intermediate servers that can multicast on the application layer.