All CommandPackets will receive a reply in the form of a RecordPacket.

Client sends this to query the server's status.

Reply from server (server.status):

• Array of Numbers version: major, minor, patchlevel, revision.
• sessions
  • {session-id}
    • Dictionary of Text to Text users: user id ⇒ user name.

Client sends this to create a new session on the server.

• Text map: map to load in the session's world.

Reply:

• Text id: id of the created session.

Client sends this to destroy an existing session on the server.

• Text id: session id.

Client sends this when it wishes to join a session in progress.

• Text id: id of the session.
• Block userState: state of the user.

Reply from server:

• Text userId: user's id in the session.

Client sends this when it is leaving a session in progress.

No reply.

Sent to a client after it has been promoted to user in the session.

• Block worldState: state of the world.
• users
  • Block {user-id}: state of user user-id.

The user's own state is not included under users.

Sent after a client has been promoted to user in the session. Not sent to the promoted user.

• Text id: id of the user who joined.
• Block userState: state of the user who joined.

Sent after a client has been demoted from the session. Not sent to the demoted client.

• Text id: id of the user who left.

Sent when the session ends on the serverside, signaling the user session to end as well.