nips/100.md
2023-03-14 15:14:22 -04:00

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# NIP-100 WebRTC
`draft` `optional` `author:jacany`
This NIP defines how to do WebRTC communication over nostr.
## Defining Rooms
Rooms are essentially the space that you will be connected to. This must be defined by a `r` tag following the pubkey of the person you are connected to or some other identifier (maybe a lobby id for a joinable voice channel, etc.)
## Peers
Who the client connects to can be chosen by the client. Ex: you can connect to everyone peer-to-peer or a WebRTC media server that is listening on nostr relays.
## Encryption
The `content` field and `r` tag of types `offer`, `answer`, and `candidate` should be encrypted, similarly to `NIP-04`.
Clients MUST listen for the `p` tag containing their pubkey so they know that event is intended for them
⚠️ `content` FIELDS SHOULD BE JSON STRINGIFIED, AND THEN ENCRYPTED. ⚠️
### Broadcasting that you are present
Announces that the client is ready to connect to others.
The connection ID is inferred from the provided pubkey.
```json
{
"kind": 25050,
"pubkey": "<sender pubkey>",
"tags": [
["type", "connect"],
["r", "<plaintext room id>"]
]
}
```
### Closing
This is used when disconnecting from everybody else. Ex: when browser tab is closed.
```json
{
"kind": 25050,
"pubkey": "<sender pubkey>",
"tags": [
["type", "disconnect"],
["r", "<plaintext room id>"]
]
}
```
### Offering to connect
Used when responding to a `type:connect`. Offering to connect to that peer.
```json
{
"kind": 25050,
"pubkey": "<sender pubkey>",
"tags": [
["type", "offer"],
["p", "<reciever>"],
["r", "<encrypted room id>"]
],
"content": {
"offer": "<offer>",
"type": "offer"
}
}
```
### Answering an Offer
```json
{
"kind": 25050,
"pubkey": "<sender pubkey>",
"tags": [
["type", "answer"],
["p", "<reciever>"],
["r", "<encrypted room id>"]
],
"content": {
"sdp": "<sdp>",
"type": "answer"
}
}
```
### Broadcasting ICE Candidate
```json
{
"kind": 25050,
"pubkey": "<sender pubkey>",
"tags": [
["type", "candidate"],
["p", "<reciever>"],
["r", "<encrypted room id>"]
],
"content": {
"candidate": "<sdp>",
<misc>
}
}
```