Doomsday Manual

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This article describes the network packets used by [[libdeng2]], [[dengsv]], and [[dengcl]].


====== CommandPackets ======

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


===== status =====

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.


===== session.new =====

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.


===== session.delete =====

Client sends this to destroy an existing session on the server.
  *  Text **id**: session id.


===== session.join =====

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.


===== session.leave =====

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

No reply.


====== RecordPackets ======



===== user.welcome (Update) =====

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**.


===== user.joined (Update) =====

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.


===== user.left (Update) =====

Sent after a client has been demoted from the session. Not sent to the demoted client.
  *  Text **id**: id of the user who left.


===== session.ended (Update) =====

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