feat(net): support dynamic server endpoints using handover

[PichotM]

Goal of this PR

Allow the server to pass a specific endpoint using deferrals to a specific player.

How is this PR achieving the goal

• Fetching handover json data and overriding the server's endpoints if an endpoint value exists in handover

This PR applies to the following area(s)

FiveM & RedM

Successfully tested on

Tested passing a custom endpoint

Checklist

• Code compiles and has been tested successfully.
• Code explains itself well and/or is documented.
• My commit message explains what the changes do and what they are for.
• No extra compilation warnings are added by these changes.

Documentation about handover https://docs-backend.fivem.net/docs/scripting-manual/nui-development/loading-screens/

-- Server script
AddEventHandler('playerConnecting', function(_, _, deferrals)
    local source = source

    deferrals.handover({
        endpoints = { "127.0.0.1" }
    })
end)

[prikolium-cfx]

That's good feature and I like it, but issues that I can see now is that player will need to restart his game twice. First time because of game build change, and second time because of pureLevel change. Am I right?

[PichotM]

That's good feature and I like it, but issues that I can see now is that player will need to restart his game twice. First time because of game build change, and second time because of pureLevel change. Am I right?

It will, except if you already are on the right build
I don't believe we can come up with a solution without changing the whole logic of the change-build stuff and doing it way later just like the second pure level check

[PichotM]

PR updated to only support dynamic endpoints
(custom pure level has been dropped)

[PsychoShock]

Doc will also be updated with the newest PR goal.

[racistnoob]

This might need looked into. Rarely some players just don't receive a pure mode switch pop-up and can load into a pure mode enabled server while their client isn't in pure mode.

Possibly reproducible by attempting to spam connect to a server and restarting fivem until you get connected without a pure mode switch pop-up.