mirror of https://gitlab.com/litecord/litecord.git
move from lvsp/00-connecting.md to lvsp.md
add some more stuff like INFO and VST\_REQUEST messages
This commit is contained in:
Luna
parent
7270462325
commit
2711924e03
|
|
@ -0,0 +1,169 @@
|
|||
# Litecord Voice Server Protocol (LVSP)
|
||||
|
||||
LVSP is a protocol for Litecord to communicate with an external component
|
||||
dedicated for voice data. The voice server is responsible for the
|
||||
Voice Websocket Discord and Voice UDP connections.
|
||||
|
||||
LVSP runs over a *long-lived* websocket with TLS. The encoding is JSON.
|
||||
|
||||
**TODO:** common logic scenarios:
|
||||
- initializing a voice channel
|
||||
- updating a voice channel
|
||||
- destroying a voice channel
|
||||
- user joining to a voice channel
|
||||
- user joining to a voice channel (while also initializing it, e.g
|
||||
first member in the channel)
|
||||
- user leaving a voice channel
|
||||
|
||||
## OP code table
|
||||
|
||||
"client" is litecord. "server" is the voice server.
|
||||
|
||||
| opcode | name | sent by |
|
||||
| --: | :-- | :-- |
|
||||
| 0 | HELLO | server |
|
||||
| 1 | IDENTIFY | client |
|
||||
| 2 | RESUME | client |
|
||||
| 3 | READY | server |
|
||||
| 4 | HEARTBEAT | client |
|
||||
| 5 | HEARTBEAT\_ACK | server |
|
||||
| 6 | INFO | client / server |
|
||||
| 7 | VST\_REQUEST | client |
|
||||
|
||||
## Message structure
|
||||
|
||||
Message data is defined by each opcode.
|
||||
|
||||
**Note:** the `snowflake` type follows the same rules as the Discord Gateway's
|
||||
snowflake type: A string encoding a Discord Snowflake.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| op | integer, opcode | operator code |
|
||||
| d | map[string, any] | message data |
|
||||
|
||||
## High level overview
|
||||
|
||||
- connect, receive HELLO
|
||||
- send IDENTIFY or RESUME
|
||||
- if RESUME, process incoming messages as they were post-ready
|
||||
- receive READY
|
||||
- start HEARTBEAT'ing
|
||||
- send INFO / VSU\_REQUEST messages as needed
|
||||
|
||||
## Error codes
|
||||
|
||||
| code | meaning |
|
||||
| --: | :-- |
|
||||
| 4000 | general error. Reconnect |
|
||||
| 4001 | authentication failure |
|
||||
| 4002 | decode error, given message failed to decode as json |
|
||||
|
||||
## HELLO message
|
||||
|
||||
Sent by the server when a connection is established.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| heartbeat\_interval | integer | amount of milliseconds to heartbeat with |
|
||||
|
||||
## IDENTIFY message
|
||||
|
||||
Sent by the client to identify itself.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| token | string | secret value kept between client and server |
|
||||
|
||||
## RESUME message
|
||||
|
||||
Sent by the client to resume itself from a failed websocket connection.
|
||||
|
||||
The server will resend its data, then send a READY message.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| token | string | same value from IDENTIFY.token |
|
||||
| seq | integer | last sequence number to resume from |
|
||||
|
||||
## READY message
|
||||
|
||||
**TODO:** does READY need any information?
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
|
||||
## HEARTBEAT message
|
||||
|
||||
Sent by the client as a keepalive / health monitoring method.
|
||||
|
||||
The server MUST reply with a HEARTBEAT\_ACK message back in a reasonable
|
||||
time period.
|
||||
|
||||
**TODO:** specify sequence numbers in INFO messages
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| s | integer | sequence number |
|
||||
|
||||
## HEARTBEAT\_ACK message
|
||||
|
||||
Sent by the server in reply to a HEARTBEAT message coming from the client.
|
||||
|
||||
**TODO:** add sequence numbers to ACK
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| s | integer | sequence number |
|
||||
|
||||
## INFO message
|
||||
|
||||
Sent by either client or server on creation of update of a given object (
|
||||
such as a channel's bitrate setting or a user joining a channel).
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| type | InfoType | info type |
|
||||
| info | Union[ChannelInfo, VoiceInfo] | info object |
|
||||
|
||||
### IntoType Enum
|
||||
|
||||
| value | name | description |
|
||||
| --: | :-- | :-- |
|
||||
| 0 | CHANNEL | channel information |
|
||||
| 1 | VST | Voice State |
|
||||
|
||||
### ChannelInfo object
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| id | snowflake | channel id |
|
||||
| bitrate | integer | channel bitrate |
|
||||
|
||||
### VoiceInfo object
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| user\_id | snowflake | user id |
|
||||
| channel\_id | snowflake | channel id |
|
||||
| session\_id | string | session id |
|
||||
| deaf | boolean | deaf status |
|
||||
| mute | boolean | mute status |
|
||||
| self\_deaf | boolean | self-deaf status |
|
||||
| self\_mute | boolean | self-mute status |
|
||||
| suppress | boolean | supress status |
|
||||
|
||||
## VST\_REQUEST message
|
||||
|
||||
Sent by the client to request the creation of a voice state in the voice server.
|
||||
|
||||
**TODO:** verify correctness of this behavior.
|
||||
|
||||
**TODO:** add logic on client connection
|
||||
|
||||
The server SHALL send an INFO message containing the respective VoiceInfo data.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| user\_id | snowflake | user id for the voice state |
|
||||
| channel\_id | snowflake | channel id for the voice state |
|
||||
|
|
@ -1,91 +0,0 @@
|
|||
# Litecord Voice Server Protocol (LVSP)
|
||||
|
||||
LVSP is a protocol for Litecord to communicate with an external component
|
||||
dedicated for voice data. The voice server is responsible for the
|
||||
Voice Websocket Discord and Voice UDP connections.
|
||||
|
||||
LVSP runs over a websocket with TLS. The encoding is JSON.
|
||||
|
||||
## High level
|
||||
|
||||
In a high level:
|
||||
- Litecord connects to the Voice Server via a URL already configured
|
||||
beforehand.
|
||||
-
|
||||
|
||||
## OP code table
|
||||
|
||||
"client" is litecord. "server" is the voice server.
|
||||
|
||||
**TODO:** voice state management.
|
||||
|
||||
| opcode | name | sent by |
|
||||
| --: | :-- | :-- |
|
||||
| 0 | HELLO | server |
|
||||
| 1 | IDENTIFY | client |
|
||||
| 2 | RESUME | client |
|
||||
| 3 | READY | server |
|
||||
| 4 | HEARTBEAT | client |
|
||||
| 5 | HEARTBEAT\_ACK | server |
|
||||
|
||||
## high level overview
|
||||
|
||||
- connect, receive HELLO
|
||||
- send IDENTIFY or RESUME
|
||||
- receive READY
|
||||
- start HEARTBEAT'ing
|
||||
|
||||
## HELLO message
|
||||
|
||||
Sent by the server when a connection is established.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| heartbeat\_interval | integer | amount of milliseconds to heartbeat with |
|
||||
|
||||
## IDENTIFY message
|
||||
|
||||
Sent by the client to identify itself.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| token | string | secret value kept between client and server |
|
||||
|
||||
## RESUME message
|
||||
|
||||
Sent by the client to resume itself from a failed websocket connection.
|
||||
|
||||
The server will resend its data, then send a READY message.
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
| token | string | same value from IDENTIFY.token |
|
||||
| seq | integer | last sequence number to resume from |
|
||||
|
||||
## READY message
|
||||
|
||||
**TODO**
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
|
||||
## HEARTBEAT message
|
||||
|
||||
Sent by the client as a keepalive / health monitoring method.
|
||||
|
||||
The server MUST reply with a HEARTBEAT\_ACK message back in a reasonable
|
||||
time period.
|
||||
|
||||
**TODO**
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
|
||||
## HEARTBEAT\_ACK message
|
||||
|
||||
Sent by the server in reply to a HEARTBEAT message coming from the client.
|
||||
|
||||
**TODO**
|
||||
|
||||
| field | type | description |
|
||||
| --: | :-- | :-- |
|
||||
|
|
@ -18,9 +18,9 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|||
"""
|
||||
|
||||
import json
|
||||
from dataclasses import dataclass, asdict, field
|
||||
from dataclasses import dataclass, asdict
|
||||
|
||||
import websockets.errors
|
||||
import websockets.exceptions
|
||||
from logbook import Logger
|
||||
|
||||
from litecord.voice.opcodes import VoiceOP
|
||||
|
|
|
|||
Loading…
Reference in New Issue