Directory Client Protocol
Core protocol is used as usual. Dirserv specific c2s/s2c protocol.
Continuum sends a sync request and SubSpace doesn't. The list request is sent as reliable. On the traditional directory servers (not catid's), traffic is always encrypted, even if you send a null encryption key.
Directory servers listen on port 4990 for client connections.
c2s 0x01 list request offset size comment 0 1 type 0x01 1 4 minimum players s2c 0x01 list data offset size comment 0 1 type 0x01 1 4 ip 5 2 port 7 2 player count 9 2 billing (on 0x01 0x00) 11 4 version (0x86 0x00 0x00 0x00) 15 64 name 79 ? description (should not be longer than around 480-490 in length) packet repeats from offset 1 until end