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Question about traffic using Cloudflare tunnel
(sh.itjust.works)
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this post was submitted on 15 Jul 2025
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How does that work? Do they do something like what tailscale does to negotiate the connection? Can you point me to any doco for how that works?
Plex does this on its own. It's one of the features they provide. The client/service knows when the server is local even though you go outside to make the initial connection. They go through a lot of trouble to do this. You connect externally it brokers the initial connection proxies date of back and forth to see if you can talk to each other directly, your client knows your server is now local and it switches over.
I don't know if any other video hosting package that does this. Jellyfin certainly would not. I 'think' if you threw a tailscale in the middle, It would be able to do it without hair pinning as long as you were using a local exit node instead of tailnet. They'd still probably go through that local exit node.
As you've described it, and from what I have read, its very similar to how tailscale negotiates its connections.
Does seem to be unique to Plex though.
Yup, there are few efficient ways to handle that, so anything that does it looks something like everything else that handles it.
Sadly, not many things handle it :)
Remember that we're talking about a server on your local network, and a device on the local network to make the connection for the stream. We aren't talking about streaming over the internet.
There is no need for tailscale or anything, this is a local connection. The only thing the public address is doing is the initial call to the server.
I get how that could work, but what services actually do that? Homeassistant can, but that needs to be setup explicitly for it to work.
Plex is a good example that does just that (not on my rec list but a good example) along with many business grade IPTV and media streaming products (think digital signage).
I'd really love to rework JF to do it, but structurally it wouldn't work, you'd need a management service in front of it.