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negentropy docs

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Doug Hoyte
2023-12-05 18:52:41 -05:00
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@ -16,7 +16,7 @@ We're going to call the two sides engaged in the sync the client and the relay (
* (4) Relay calls `reconcile()` on its `Negentropy` object, and returns the results as a `NEG-MSG` answer to the client.
* (5) Client calls `reconcile()` on its `Negentropy` object using the value sent by the relay.
* If the empty string is returned, the sync is complete.
* This call will return `have` and `need` arrays, which correspond to nostr IDs (or ID prefixes, if `idSize < 32`) that should be uploaded and downloaded, respectively.
* This call will return `have` and `need` arrays, which correspond to nostr IDs that should be uploaded and downloaded, respectively.
* Otherwise, the result is sent back to the relay in another `NEG-MSG`. Goto step 4.
## Nostr Messages
@ -28,14 +28,12 @@ We're going to call the two sides engaged in the sync the client and the relay (
"NEG-OPEN",
<subscription ID string>,
<nostr filter or event ID>,
<idSize>,
<initialMessage, lowercase hex-encoded>
]
```
* The subscription ID is used by each side to identify which query a message refers to. It only needs to be long enough to distinguish it from any other concurrent NEG requests on this websocket connection (an integer that increments once per `NEG-OPEN` is fine). If a `NEG-OPEN` is issued for a currently open subscription ID, the existing subscription is first closed.
* The nostr filter is as described in [NIP-01](https://github.com/nostr-protocol/nips/blob/master/01.md), or is an event ID whose `content` contains the JSON-encoded filter/array of filters.
* `idSize` indicates the truncation byte size for IDs. It should be an integer between 8 and 32, inclusive. Smaller values will reduce the amount of bandwidth used, but increase the chance of a collision. 16 is a good default.
* `initialMessage` is the string returned by `initiate()`, hex-encoded.
### Error message (relay to client):