Custom Authentication Function

[vlouboos]

Is your feature request related to a problem? Please describe.
I can't join some servers which use non-vanilla auth

Describe the solution you'd like
Add an interface to use own auth-server, like custom auth-lib.
Or just simply forward the authentication-packet(hand_shake, login_start)

[kashalls]

What authentication are you talking about? Are you referring to #572 ?

[vlouboos]

Including but also others, like some mc-launchers build a local server for auth when logging in servers, clients call the servers before sending the hand_shake packet, the game profile is returned from the server.
The most effective way is to forward the hand_shake and login_start packet to the target server in order to prevent unsupported auth.

[vlouboos]

Another way, use 'authlib.jar' for auth, then give an interface for us to custom using authlib

[kashalls]

I'm against directly putting it minecraft-protocol but I can look into adding an interface for you to do your own authentication. It can be as simple as making auth available as a function so that if you don't set Microsoft or offline, you can handle it your way. Let me look into it.

[rob9315]

Add an interface to use own auth-server

i can get behind this, there should also be an easy option for using yggdrasil-compatible ('mojang') auth servers by setting the custom /auth endpoint url.

Another way, use 'authlib.jar' for auth, then give an interface for us to custom using authlib

this will not turn into a wrapper of authlib, it's been completely java-free so far and will stay that way

[kashalls]

Add an interface to use own auth-server

i can get behind this, there should also be an easy option for using yggdrasil-compatible ('mojang') auth servers by setting the custom /auth endpoint url.

Another way, use 'authlib.jar' for auth, then give an interface for us to custom using authlib

this will not turn into a wrapper of authlib, it's been completely java-free so far and will stay that way

You can set session server in the client options to change the session server.

[rob9315]

no, that doesn't work because it's not forwarded to yggdrasil

[rob9315]

yes, it is, but there is no option for servers

[kashalls]

60379eb Solves original issue by exposing an auth function for non-official auth services.