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Introduces NNS

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Vitor Pamplona 2024-06-26 10:05:28 -04:00
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NIP-97
======
Nostr Name System (NNS)
-----------------------
`draft` `optional`
Event `30053` defines a DNS record for Nostr. `ip4` and `ip6` tags represent DNS's `A` records.
```jsonc
{
"created_at": <Unix timestamp in seconds>,
"kind": 30053,
"tags": [
["d", "<subdomain-like-name or empty for root>"],
// relays used by the community (w/optional marker)
["ip4", "230.22.120.232"],
["ip4", "230.22.120.233"], // mirrored servers / client-based load balancing
["ip4", "230.22.120.234"], // mirrored servers / client-based load balancing
["ip6", "FE80:0000:0000:0000:0202:B3FF:FE1E:8329"] // same content as ipv4
],
...
}
```
Multiple pubkeys can point to the same IP address.
The server must reply with an IP-only request, such as: `wss://230.22.120.232` or `https://230.22.120.232`.
# Addressing
[NIP-19](19.md)'s `naddr1` addresses of kind `30053` replace the domain name on any URL or URI.
Examples
- `http://naddr1...ccpzu/image.jpg` makes an http request for `https://<ip4>/image.jpg`
- `wss://naddr1...ccpzu:443/` makes an websocket request at `wss://<ip4>:443/`
The `naddr1`'s `relay` field SHOULD have the IP-based URI to the relay (e.g.: `wss://<ip4>/`) hosting the NNS record at the time of creating the `naddr1`.
# Resolving
Clients SHOULD intercept the DNS resolution of any `naddr1` domain name and resolve to IP using the latest version of the NNS replaceable event.
If the NNS event cannot be found locally, Clients SHOULD in parallel:
1. Connect to the IP in the `relay` field of the `naddr1` do download a potentially outdated version of the NNS record.
2. Retrieve the latest version of this replaceable from the (NIP-65)[65.md] WRITE relays of the `naddr1`'s pubkey.
# HTTP URLs (Media Servers)
Clients SHOULD use the NNS address (e.g. `http://naddr1...ccpzu/<rest of the url>`), if available, instead of the regular domain name in all URLs, both in tags and in the content of events.
# Relay Hints
Clients SHOULD use the NNS record (e.g. `wss://naddr1...ccpzu`), if available, instead of the regular domain name in all relay hints.
# Relay Lists
Clients SHOULD use the NNS record (e.g. `wss://naddr1...ccpzu`), if available, instead of the DNS in all relay lists.
The NNS events to resolve those addresses MUST be broadcasted to the same relays as their kind `10002`
For example:
```json
{
"kind": 10002,
"tags": [
["r", "wss://naddr1...ccpzu"],
["r", "wss://naddr1...2d90k", "write"],
["r", "wss://naddr1...um5wg", "read"]
],
"content": "",
...other fields
}
```