Client-to-dbserver

The game client connects to port 7000 to find dbserver, and uses the common Network protocol.

When a QueueServer is in use, then it listens on port 7000 and clients will connect there. Otherwise, dbserver listens on port 7000 and accepts client connections.

dbserver game client interface

When a game client disconnects from dbserver, then:

• if the client is not logged in, dbserver sends AS_QUIT_GAME to authserver with reason 1
• if the client is logged in but does not have an entity loaded, dbserver sends AS_QUIT_GAME to authserver with reason 2
• if the client is loaded onto a MapServer, then the MapServer is sent DBSERVER_FORCE_LOGOUT with reason -1
• if the client is loaded but not connected to a MapServer, then an ACCOUNT_CLIENT_LOGOUT_ACCOUNT is sent to AccountServer and AS_QUIT_GAME is sent to authserver with reason 3

When dbserver receives a command on a link from a client, it first checks if the server is shutting down, and if it is then sends the client DBGAMESERVER_MSG with "ServerShutdown", and quits the client.

When quitting a client:

• If QueueServer is not used, dbserver closes the link
• If QueueServer is used, dbserver sends QUEUESERVER_SVR_REMOVECLIENT to QueueServer for this client

If the client is not logged in, then receiving any message other than DBGAMECLIENT_LOGIN will result in DBGAMESERVER_MSG with "NotLogged", and quits the client.

When QueueServer is used, the protocol is modified by prefixing headers onto packets so that QueueServer can proxy them. See Dbserver-protocols#queue for details.