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@ -8,122 +8,42 @@ In its purest form:
```json ```json
{ {
"sig": "<signature>",
"pubkey": "<pubkey>",
"id": "<eventid>",
"content": "{}",
"created_at": 1722173222,
"kind": 30166, "kind": 30166,
"created_at": 1722173222,
"content": "{}",
"tags": [ "tags": [
[ [ "d", "wss://somerelay.abc/" ]
"d", ],
"wss://eostagram.com/" "pubkey": "<pubkey>",
] "sig": "<signature>",
] "id": "<eventid>"
} }
``` ```
This event signals that the relay at `wss://eostagram.com/` was reported "online" by `<pubkey>` at timestamp `1722173222`. This event **MAY** be extended upon to include more information. This event signals that the relay at `wss://somerelay.abc/` was reported "online" by `<pubkey>` at timestamp `1722173222`. This event **MAY** be extended upon to include more information.
## Kinds ## Kinds
This NIP defines two (2) event kinds, `10166` and `30166` `NIP-66` defines two (2) event kinds, `30166` and `10166`
| kind | name | description | | kind | name | description |
|-------|----------------------------|-----------------------------------------------------------------------------------------| |-------|----------------------------|-----------------------------------------------------------------------------------------|
| [10166](#k10166) | Relay Monitor Announcement | An RE that stores data to publish intent to monitor and details around their activities |
| [30166](#k30166) | Relay Discovery | A PRE that is published by a monitor when a relay is online | | [30166](#k30166) | Relay Discovery | A PRE that is published by a monitor when a relay is online |
| [10166](#k10166) | Relay Monitor Announcement | An RE that stores data that signals the intent of a pubkey to monitor relays and publish `30166` events at a regular _frequency_ |
## Ontology ## Ontology
- `Relay Operator`: someone who operates a relay - `Relay Operator`: someone who operates a relay
- `Monitor Service`: a group or individual that monitors relays - `Monitor`: A pubkey that monitors relays and publishes `30166` events at the frequency specified in their `10166` event.
- `Monitor`: a piece of software that aggregates relay data and publishes that data at a specified frequency. - `Ad-hoc Monitor`: A pubkey that monitors relays and publishes `30166` events at an irregular frequency.
- `Monitor Service`: A group or individual that monitors relays using one or more `Monitors`.
- `Check`: a specific data point that is tested or aggregated by a monitor. - `Check`: a specific data point that is tested or aggregated by a monitor.
## `10166`: "Relay Monitor Announcement" Events <a id="k10166"></a>
### Summary
`10166` is a replacable event herein referred to as "Relay Monitor Announcement" events. These events contain information about a publisher's intent to monitor and publish data as `NIP-66` events.
### Purpose
To provide a directory of monitors, their intent to publish, their criteria and parameters of monitoring activities. Absence of the `10166` event is not encouraged, but if absent implies the monitor is ad-hoc and does not publish events at a predictable frequency.
### Schema
#### Non-Indexed Tags
- `frequency` The frequency **in seconds** at which the monitor publishes events. A string-integer at index `1` represents the expected frequency the monitor will publish `30166` events. There should only be `1` frequency per monitor. A `-1` frequency means that the monitor does not publish events at a predictable frequency.
```json
[ "frequency", "3600" ]
```
- `timeout` (optional) The timeout values for various checks conducted by a monitor. Index `1` is the monitor's timeout in milliseconds. Index `2` describes what test the timeout is used for, for example `open`, `read`, `write`, `nip11`, etc. If no index `2` is provided, it is inferred that the timeout provided applies to all tests. These values can assist relay operators in understanding data signaled by the monitor in _Relay Discovery Events_.
```json
[ "timeout", "2000", "open" ],
[ "timeout", "2000", "read" ],
[ "timeout", "3000", "write" ],
[ "timeout", "2000", "nip11" ],
[ "timeout", "4000", "ssl" ]
```
#### Indexed Tags
- `c` "Checks" **SHOULD** be a lowercase string describing the check(s) conducted by a monitor. Some examples are: `ws`, `nip11`, `ssl`, `dns`, `geo`, etc. Other checks **MAY** be included. New types of checks **SHOULD** be added to this NIP as they are needed.
```json
[ "c", "ws" ],
[ "c", "nip11" ],
[ "c", "dns" ],
[ "c", "geo" ],
[ "c", "ssl" ],
```
- `g`: `NIP-52` `g` tags (geohash)
```json
[ "g", "9r1652whz" ]
```
- Any other globally defined indexable tags **MAY** be included as found necessary.
### Other Requirements
Monitors **SHOULD** have the following
- A published `0` (NIP-1) event
- A published `10002` (NIP-65) event that defines the relays the monitor publishes to.
### Robust Example of a `10166` Event
```json
{
"id": "<eventid>",
"pubkey": "<monitor's pubkey>",
"created_at": "<created_at [some recent date ...]>",
"signature": "<signature>",
"content": "",
"tags": [
[ "url", "https://a.good.monitor/"],
[ "timeout", "open", "5000" ],
[ "timeout", "read", "3000" ],
[ "timeout", "write", "3000" ],
[ "timeout", "nip11", "3000" ],
[ "frequency", "3600" ],
[ "c", "ws" ],
[ "c", "nip11" ],
[ "c", "ssl" ],
[ "c", "dns" ],
[ "c", "geo" ]
[ "g", "ww8p1r4t8" ]
]
}
```
## `30166`: "Relay Discovery" <a id="k30166"></a> ## `30166`: "Relay Discovery" <a id="k30166"></a>
### Summary ### Summary
`30166` is a `NIP-33` Parameterized-Replaceable Event [PRE], referred to as a "Relay Discovery" event. These events are optimized with a small footprint for protocol-level relay Discovery. `30166` is a `NIP-33` Parameterized-Replaceable Event [PRE], referred to as a "Relay Discovery" event. These events are optimized with a small footprint for protocol-level relay Discovery.
### Purpose ### Purpose
Enables the discovery of relays via nostr protocol. Discovery of relays over nostr.
### Schema ### Schema
@ -143,7 +63,7 @@ The `created_at` field in a NIP-66 event should reflect the time when the relay
_Other `rtt` values **MAY** be present. This NIP should be updated if there is value found in more `rtt` values._ _Other `rtt` values **MAY** be present. This NIP should be updated if there is value found in more `rtt` values._
##### Single Letter Tags (indexed) ##### Single Letter Tags (indexed)
- `d` The relay URL. The `#d` tag **must** be included in the `event.tags[]` array. Index position `1` **must** be the relay websocket URL. The URL **SHOULD** be [normalized](https://datatracker.ietf.org/doc/html/rfc3986#section-6) - `d` The relay URL/URI. The `#d` tag **must** be included in the `event.tags[]` array. Index position `1` **must** be the relay websocket URL/URI. If a URL it **SHOULD** be [normalized](https://datatracker.ietf.org/doc/html/rfc3986#section-6). For relays not accessible via conventional means but rather by an npub/pubkey, an npub/pubkey **MAY** be used in place of a URL.
```json ```json
[ "d", "wss://somerelay.abc/"] [ "d", "wss://somerelay.abc/"]
``` ```
@ -228,20 +148,103 @@ _Relay was online, and you can filter on a number of different tags_
} }
``` ```
#### Methodology ## `10166`: "Relay Monitor Announcement" Events <a id="k10166"></a>
##### Monitors ### Summary
1. A _Relay Monitor_ checks the liveness of a relay at the `frequency` defined in their `10166`. `10166` is a replacable event herein referred to as "Relay Monitor Announcement" events. These events contain information about a publisher's intent to monitor and publish data as `30166` events. This event is optional and is intended for monitors who intend to provide monitoring services at a regular and predictable frequency.
2. _Relay Monitor_ publishes a kind `30166` note when a relay it is monitoring is online. ### Purpose
To provide a directory of monitors, their intent to publish, their criteria and parameters of monitoring activities. Absence of this event implies the monitor is ad-hoc and does not publish events at a predictable frequency, and relies on mechanisms to infer data integrity, such as web-of-trust.
_Relay Monitors that publish `30166` events **SHOULD** at a minimum be checking that the relay is available by websocket and behaves like a relay_ ### Schema
##### Clients #### Standard Tags
1. In most cases, a client **SHOULD** filter on `30166` events using either a staticly or dynamically chosen monitor's `pubkey` and a `created_at` value respective of the monitor's published `frequency`.
- `frequency` The frequency **in seconds** at which the monitor publishes events. A string-integer at index `1` represents the expected frequency the monitor will publish `30166` events. There should only be `1` frequency per monitor.
```json
[ "frequency", "3600" ]
```
- `timeout` (optional) The timeout values for various checks conducted by a monitor. Index `1` is the monitor's timeout in milliseconds. Index `2` describes what test the timeout is used for. If no index `2` is provided, it is inferred that the timeout provided applies to all tests. These values can assist relay operators in understanding data signaled by the monitor in _Relay Discovery Events_.
```json
[ "timeout", "2000", "open" ],
[ "timeout", "2000", "read" ],
[ "timeout", "3000", "write" ],
[ "timeout", "2000", "nip11" ],
[ "timeout", "4000", "ssl" ]
```
#### Indexed Tags
- `c` "Checks" **SHOULD** be a lowercase string describing the check(s) conducted by a monitor. Due to the rapidly evolving nature of relays, enumeration is organic and not strictly defined. But examples of some checks could be websocket `open/read/write/auth`, `nip11` checks, `dns` and `geo` checks, and and any other checks the monitor may deem useful.. Other checks **MAY** be included. New types of checks **SHOULD** be added to this NIP as they are needed.
```json
[ "c", "ws" ],
[ "c", "nip11" ],
[ "c", "dns" ],
[ "c", "geo" ],
[ "c", "ssl" ],
```
- `g`: `NIP-52` `g` tags (geohash)
```json
[ "g", "9r1652whz" ]
```
- Any other globally defined indexable tags **MAY** be included as found necessary.
### Other Requirements
Monitors **SHOULD** have the following
- A published `0` (NIP-1) event
- A published `10002` (NIP-65) event that defines the relays the monitor publishes to.
### Robust Example of a `10166` Event
```json
{
"id": "<eventid>",
"pubkey": "<monitor's pubkey>",
"created_at": "<created_at [some recent date ...]>",
"signature": "<signature>",
"content": "",
"tags": [
[ "timeout", "open", "5000" ],
[ "timeout", "read", "3000" ],
[ "timeout", "write", "3000" ],
[ "timeout", "nip11", "3000" ],
[ "frequency", "3600" ],
[ "c", "ws" ],
[ "c", "nip11" ],
[ "c", "ssl" ],
[ "c", "dns" ],
[ "c", "geo" ]
[ "g", "ww8p1r4t8" ]
]
}
```
## Methodology
### Monitors
1. A _Relay Monitor_ checks the liveness and potentially other attributes of a relay.
2. _Relay Monitor_ publishes a kind `30166` note when a relay it is monitoring is online. If the monitor has a `10166` event, events should be published at the frequency defined in their `10166` note.
_Any pubkey that publishes `30166` events **SHOULD** at a minimum be checking that the relay is available by websocket and behaves like a relay_
### Clients
1. In most cases, a client **SHOULD** filter on `30166` events using either a staticly or dynamically chosen monitor's `pubkey` and a `created_at` value respective of the monitor's published `frequency`. If the monitor has no stated frequency, other mechanisms should be employed to determine data integrity.
2. _Relay Liveness_ is subjectively determined by the client, starting with the `frequency` value of a monitor. 2. _Relay Liveness_ is subjectively determined by the client, starting with the `frequency` value of a monitor.
3. The liveness of a _Relay Monitor_ can be subjectively determined by detecting whether the _Relay Monitor_ has published events with respect to `frequency` value of any particular monitor. 3. The liveness of a _Relay Monitor_ can be subjectively determined by detecting whether the _Relay Monitor_ has published events with respect to `frequency` value of any particular monitor.
4. The reliability and trustworthiness of a _Relay Monitor_ could be established via web-of-trust, reviews or similar mechanisms. 4. The reliability and trustworthiness of a _Relay Monitor_ could be established via web-of-trust, reviews or similar mechanisms.
## Risk Mitigation
- When a client implements `NIP-66` events, the client should have a fallback if `NIP-66` events cannot be located.
- A `Monitor` or `Ad-hoc Monitor` may publish erroneous `30166` events, intentionally or otherwise. Therefor, it's important to program defensively to limit the impact of such events. This can be achieved with web-of-trust, reviews, fallbacks and/or data-aggregation for example.