ShadowKitten

While this is good news one should remember any such solution will absolutely require a client side mod. You then have to get modpacks and the like to include that...

I should also add we had discussions with Lex he has been willing to accept a PR containing this functionality for a while he simply was not willing to put...

We've spent quite a bit of time investigating and attempting to implement similar solutions into Bungee and Velocity I'm in both the PaperMC and Velocity discords following the progress of...

I did quite a bit more digging into this and it's actually might be a bit more simple than I think people are realizing. The error experienced in #449 is...

In the case of the new FML protocol you won't be worrying about phases or race conditions for the FML Handshake it's all being done over the Vanilla LoginPayloadRequest and...

I fully understand hence why I've be trying to do as much as the leg work as possible and will continue to do so to try and reduce some of...

I've done quite a bit more digging today and found a few more things. Currently it seems that PayloadRequest and Response packets are coming in AFTER the Login Success packet...

Unfortunately after much discussion modern Forge support currently is not possible with the current climate. There is no packet currently available to reset the client back into a LOGIN state...

No it wasn't since the FML handshake happened in Game mode since it was all Plugin Messages.

 I'll include this as a conversation that occurred in the MinecraftForge Discord, make sure to go there and find these messages for the rest of the conversation and context...