I'm writing a Minecraft Classic server in Ruby called RMS, and it can currently send a heartbeat to minecraft.net just fine. But the problem is, when a client (in the form of a TCPSocket) connects, it will only respond to TCPSocket#read (so that the server may receive the join packet) when the server has sent the server ID packet or when the client exits. But the server ID must be sent after the server receives information about the player; it won't be the same content for every player.
This might be by design, but that's an odd thing to do...
You can find the current server software here. Thanks!
EDIT: The exact problem is located in lines 99-101 of program/server.rb
