Reuse Certificate for Webtransport to Produce Constant Certhashes

[AustinFoss]

I was wanting to implement a way to use a saved certificate for my webtransport transport, so that I could have a constant multiaddr.

Looking over the repo: https://github.com/libp2p/go-libp2p/tree/master/p2p/transport/webtransport

I see values related to "validity" and "time". This seems to imply to me that webtransport self signed certs expire by default.

Is there way a to pass a saved cert from the file system to the webtransport.New() function and achieve a constant multiaddr?

[cpeliciari]

take a look at https://github.com/ipshipyard/p2p-forge

[MarcoPolo]

Unfortunately WebTransport certhashes are only valid for at most 2 weeks per w3c spec: https://www.w3.org/TR/webtransport/#custom-certificate-requirements

[AustinFoss]

Oh neat I wasn't aware of this. Thanks for pointing to the spec page, got me looking at the webrtc spec instead and seems it's upper limit is 365 days