FML login logic and "FML" packet channel

[XspeedPL]

Hi,

 

I am developing a plugin for Bukkit that would only allow users with specified mods to join the server.

I registered "FML" channels for communication and I am sending a ModListRequestPacket correctly to clients,

but the client seems to ignore the packet. After having a quick look through FML code, I see that FML does

some weird things during player logon, that I don't understand.

 

How does it work and what would it take to make it work?

[cpw]

FML modifies a couple of vanilla packet structures. To verify that the server is FML we send an unsolicited login packet that the server has to ack. You won't be able to emulate this in bukkit without changing the net server handler. Sorry.

[luacs1998]

There isn't really much of a need. FML already kicks players if they don't have the same mods as the server.