Migrate PushService methods to the emulated HTTP request/response inside of the websocket

[gferon]

No description provided.

[gferon]

@rubdos @direc85 wdyt? should I proceed and move all of the requests methods from PushService to their relevant SignalWebSocket<C> counterpart?

[rubdos]

@gferon yes please, this looks very good to me!

[direc85]

Looks like a good direction to go forward with!

[gferon]

Looks like a good direction to go forward with!

Lemme try to go crazy tonight or tomorrow and move forward.

[gferon]

@rubdos I'm pretty happy with this, you can look for reference at the other side of the story in presage (whisperfish/presage#343), but I don't think adapting things will take a lot of time in whisperfish!

[direc85]

Note that this bumps MSRV to 1.88 (can't remember by whom exactly) but edition is still 2021.

@gferon Can you estimate how complete this PR is? This will be required soon...

[gferon]

I think it's actually finished as far as I could test. See the relevant changes in presage, @Schmiddiii even tested on Flare IIRC.

[Schmiddiii]

@Schmiddiii even tested on Flare IIRC

I indeed did. Linking, groups, and stickers worked as expected (at least as of 2025-11-19, not sure if anything changed since then), I did not try registering though as Flare does not yet support that officially. I also did not look at the code yet, but I likely don't know too much about the internals of Signal to be of much use for a review of the code.

[direc85]

I tested linking as secondary, and in principle it worked. I'm having a little trouble creating the websockets in the right places at the right time, so I can't do much after linking. Didn't test registration as primary yet though.

[gferon]

@direc85 both linking and registration didn't change 😂 but all the other operations once you register, like registering pre-keys and send/receive operations. I think we should merge this, rip the band-aid, go in the corner, sit down, cry a lot and get back on our toes afterwards.

[direc85]

I'm not entirely sure how and where clients (Whisperfish) should be creating websockets, but as I'm able to daily drive it, I'll approve this PR. We have to get this forward.