Steps to migrate third party clients to 1.4

[EP-u-NW]

I'm about to migrated my in dart written mumble client dumble to darts "new" null safety feature (finally...). While doing this I hope to support new features mumble server 1.4 will add. I looked around in mumbles git a bit and found the projects tab describing some changes that will land with 1.4. Is there a more technicall document describing all major changes on serverside so I can adapt them into my client? I know that there are discussions on using a new encryption scheme for udp voice transmission and not longer using AES-OCB, is this discussion still up to date or resolved (I specifically asked about crypto since this will be the hardest do adapt^^)?

[Krzmbrzl]

The only thing that has changed for the client-server communication is on the Protobuf level. There are a couple of new extensions to the Protobuf scheme but other than that I don't think anything has changed.

The encryption stuff has not yet been implemented so you don't have to worry about that just yet :)

In terms of a more technical document I am afraid there is no such thing. You probably have to check the changekog and the PRs linked in it 🤔

[EP-u-NW]

Thanks for the fast answer! So if I understood you correctly I just check the Mumble.proto and adapt it into my client? Should I use the Mumble.proto from the master or 1.4.x branche?

[Krzmbrzl]

Yes exactly. If I am not mistaken there have been no changes to this file between the 1.4.x branch and current master, so as of now it shouldn't matter 🤔

[EP-u-NW]

I just realized that I could have checked that myself, since this is github (with diffs and stuff...), so thanks for the input 😄. So then I have one (hopefully) last question: I obviosuly need the dart client to be compatible with the changes prupposed in #4963, and as stated there we will use own mumble server builds till these changes hit (again, hopefully) ppa. As you can see in #5119 I was able to rebase these changes onto the master. So a server build based on this should be compatible with a client that adpopted 1.4?

[Krzmbrzl]

till these changes hit (again, hopefully) ppa

We do plan to populate our PPA with recent builds again. That's what #5006 is for (among other things)

So a server build based on this should be compatible with a client that adpopted 1.4?

Yes. Clients and servers of different versions should always be compatible (at least if you don't take the difference in versions to the extreme). Only newer feature may require a specific minimum version of both in order to work. But for regular communications there should be no problem.
Unless your changes themselves were to change the server's behavior in a way that makes it incompatible with older clients. The rebase against current master should not have had an influence on that though 🤔

[EP-u-NW]

It seems that there are also new permissions, see ACL.h.