243 lines
No EOL
6.5 KiB
Markdown
243 lines
No EOL
6.5 KiB
Markdown
# Waffle API docs
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# Gateway
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Waffle uses a WebSocket gateway to transmit various updates from the server to the client and vice-versa (new message, user disconnecting, connect to voice, etc.)
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# Gateway Payload format
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All payloads sent through the gateway are *string payloads*. They all start with a number represeting the "instruction", followed by a "@" character (to delimit the instruction number from the rest of the payload), after which comes the data for the specific instruction.
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Example packet:
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```json
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23@this is my payload data
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```
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Note for the example above: The "this is my payload data" text should not be user controlled. If user controlled input is required, it must be sanitized and/or passed as a JSON field.
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Packets can also have JSON as a payload:
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```json
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32@{"name":"Alice"}
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```
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## Instructions
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## 0:HELLO
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*Part of handshake, Server to client*
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Sent by the server to the client as soon as possible after they connect to the gateway.
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JSON data format:
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| Field | Description |
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| - | - |
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| pingInterval | Every *pingInterval*, the client must send a packet simply containing `7@1`. This is the ACTION_PING payload. If the client does not send this payload at the right time, it is disconnected. |
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| supportedAttributes | An array of attributes supported by the server. If a client requests an unsupported attribute, it is disconnected from the server. |
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Example:
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```json
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0@{"pingInterval":14750,"supportedAttributes":["PRESENCE_UPDATES"]}
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```
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## 1:YOO
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*Part of handshake, Client to server*
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Sent by the client as soon as possible after receiving the HELLO instruction.
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JSON data format:
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| Field | Description |
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| - | - |
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| token | The authentication token |
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| attributes | An array of attributes the client wants the server to enable. The current possible values are: `PRESENCE_UPDATES` (required for presence updates to be sent to the client) |
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Example:
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```json
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1@{"token":"my totally real token","attributes":["PRESENCE_UPDATES"]}
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```
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If the token is invalid, or the connection is otherwise rejected, the client should be disconnected as soon as possible, and no YOO\_ACK should be sent.
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## 2:YOO\_ACK
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*Part of handshake, Server to client*
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Sent by the server as soon as possible after processing the YOO payload from the client.
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JSON data format:
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| Field | Description |
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| - | - |
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| user | A [message author object](#message-author-object) |
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| session_id | A UUIDv4 |
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| channels | An array of [channels](#channel-object) |
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Example:
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```json
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2@{}
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```
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## 3:ACTION\_CREATE\_MESSAGE
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*Auth required, Client to server*
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Sent by the client when sending a message.
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JSON data format:
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| Field | Description |
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| - | - |
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| content | The text content of the message |
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| channel | An object that contains "_id", the id of the channel to send the message to |
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Example:
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```json
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3@{"content":"i hate you","channel":{"_id":"totally real channel id"}}
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```
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## 4:EVENT\_NEW\_MESSAGE
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*Auth required, Server to client*
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Sent by the server when a new message is created in a channel the client is subscribed to.
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JSON data format:
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[Message object](#message-object)
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## 5:ACTION\_UPDATE\_STATUS
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*Auth required, Client to server*
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Sent by the client when updating status. Usually, this packet is sent as soon as possible after getting YOO\_ACK to indicate the client is online.
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**This packet is deprecated and reserved for future use**
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JSON data format:
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| Field | Description |
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| - | - |
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| status | Can be 0(STATUS\_OFFLINE) or 1(STATUS\_ONLINE) |
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| status_text | Custom status text, max 50 characters, min 1 non-whitespace character, trimmed |
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Example:
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```json
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5@{"status":1,"status_text":"hello"}
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```
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## 6:EVENT\_CHANNEL\_MEMBERS
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*Auth required, Server to client*
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An object containing a list of user presences which were updated, where the keys are the user ids and the values are [user presence objects](#user-presence-object).
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**This packet is only sent if the user has `PRESENCE_UPDATES` in their `attributes`, specified in YOO.**
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Example:
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```json
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6@{"userid":{_id:"userid",username:"username123",status:1,status_text:"hello"}}
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```
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## 7:ACTION_PING
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*Auth required, Client to server*
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Sent by the client every `pingInterval`. The payload of this packet must always be `1`.
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Example:
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```json
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7@1
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```
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## 21:ACTION_VOICE_REQUEST_SESSION
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*Auth required, Client to server*
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Sent by the client whenever it wants to initiate a voice session in a specific channel.
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JSON data format:
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| Field | Description |
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| - | - |
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| channel | An object that contains "_id", the id of the channel to connect to |
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## 22:EVENT_VOICE_ASSIGN_SERVER
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*Auth required, Server to client*
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Sent by the server when a voice server has been assigned to a channel session.
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JSON data format:
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| Field | Description |
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| - | - |
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| reportTo | The IP and port of the voice server to connect to |
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| channel | An object that contains "_id", the id of the channel |
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# Voice server gateway
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Voice server signaling is done through a websocket gateway. This gateway is specified by the `reportTo` property in EVENT_VOICE_ASSIGN_SERVER.
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## 23:ACTION_VOICE_CONNECTION_REQUEST
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*Client to server*
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| Field | Description |
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| - | - |
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| token | The authentication token |
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| channel | An object that contains "_id", the id of the channel to connect to |
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| offer | An SDP payload; the webrtc offer from the client |
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## 24:EVENT_VOICE_CONNECTION_ANSWER
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*Auth required, Server to client*
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| Field | Description |
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| session_id | A UUIDv4 |
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| answer | An SDP payload; the webrtc answer from the server |
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# Objects and data types
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## Message object
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| Field | Description |
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| - | - |
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| content | The text content of the message (max 2000 characters, min 1 character, trimmed) |
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| channel | A [message channel object](#message-channel-object) |
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| author | A [message author object](#message-author-object) |
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| _id | An ObjectId |
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## Message channel object
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Used mostly for messages.
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| Field | Description |
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| _id | The id of the channel |
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| name | The name of the channel |
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## Channel object
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| Field | Description |
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| _id | The id of the channel |
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| name | The name of the channel |
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| creator | A [user object](#user-object) |
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## User object
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| Field | Description |
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| _id | The id of the user |
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| name | The name of the user |
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## Message author object
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Used mostly for messages.
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| Field | Description |
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| _id | The id of the user |
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| name | The name of the user |
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## User presence object
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| Field | Description |
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| _id | The id of the user |
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| name | The name of the user |
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| status | The status of the user (see ACTION_UPDATE_STATUS) |
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| status_text | The text status of the user (see ACTION_UPDATE_STATUS) | |