Does syncthing work when UDP is blocked?

I would like to use syncthing over WAN where another device has UDP ports blocked, would that work?

Yes. Syncthing can work over TCP connections.

If I’m not mistaken, UDP is only used for discovery. You only need 22000 over TCP to have sync over WAN work

We support both. By default 22000/tcp + 22000/udp

Thanks for answering everyone.

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