mirror of
https://github.com/minetest/minetest.git
synced 2024-08-19 04:54:18 +02:00
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
Minetest-c55 protocol (incomplete, early draft):
|
|
Updated 2011-06-18
|
|
|
|
A custom protocol over UDP.
|
|
Integers are big endian.
|
|
Refer to connection.{h,cpp} for further reference.
|
|
|
|
Initialization:
|
|
- A dummy reliable packet with peer_id=PEER_ID_INEXISTENT=0 is sent to the server:
|
|
- Actually this can be sent without the reliable packet header, too, i guess,
|
|
but the sequence number in the header allows the sender to re-send the
|
|
packet without accidentally getting a double initialization.
|
|
- Packet content:
|
|
# Basic header
|
|
u32 protocol_id = PROTOCOL_ID = 0x4f457403
|
|
u16 sender_peer_id = PEER_ID_INEXISTENT = 0
|
|
u8 channel = 0
|
|
# Reliable packet header
|
|
u8 type = TYPE_RELIABLE = 3
|
|
u16 seqnum = SEQNUM_INITIAL = 65500
|
|
# Original packet header
|
|
u8 type = TYPE_ORIGINAL = 1
|
|
# And no actual payload.
|
|
- Server responds with something like this:
|
|
- Packet content:
|
|
# Basic header
|
|
u32 protocol_id = PROTOCOL_ID = 0x4f457403
|
|
u16 sender_peer_id = PEER_ID_INEXISTENT = 0
|
|
u8 channel = 0
|
|
# Reliable packet header
|
|
u8 type = TYPE_RELIABLE = 3
|
|
u16 seqnum = SEQNUM_INITIAL = 65500
|
|
# Control packet header
|
|
u8 type = TYPE_CONTROL = 0
|
|
u8 controltype = CONTROLTYPE_SET_PEER_ID = 1
|
|
u16 peer_id_new = assigned peer id to client (other than 0 or 1)
|
|
- Then the connection can be disconnected by sending:
|
|
- Packet content:
|
|
# Basic header
|
|
u32 protocol_id = PROTOCOL_ID = 0x4f457403
|
|
u16 sender_peer_id = whatever was gotten in CONTROLTYPE_SET_PEER_ID
|
|
u8 channel = 0
|
|
# Control packet header
|
|
u8 type = TYPE_CONTROL = 0
|
|
u8 controltype = CONTROLTYPE_DISCO = 2
|
|
|