Password-locked lobbies

[elementbound]

Motivation

While this is perfectly doable without involving nohub ( game server validates password when client connects ), it would be nice to have an extra layer of protection. To that end, nohub should check passwords on lobby/join, and refuse to share the lobby's address if the password doesn't match.

Goals

• Lobbies should have an optional password attached
• During lobby/get and lobby/list, a password flag should be present if the lobby is password-locked
• On lobby/join, nohub should reply with a command, asking for password
• On password mismatch, nohub should refuse to share lobby address

Notes

• Does it make sense to hash passwords? Since lobbies are ephemeral
  • Probably put it behind a feature switch
• Allow clients to supply password in join command?
  • Otherwise might complicate client integration flows