nwaku/CHANGELOG.md

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# Changelog
## Next
This release contains the following:
### Features
### Changes
- Enables db migration for the message store.
- The `resume` Nim API eliminates duplicates messages before storing them.
- Updates the `resume` Nim API to fetch historical messages in sequence of pages.
- Support for stable version of `relay` protocol, with protocol ID `/vac/waku/relay/2.0.0`
- Support for multiple protocol IDs - now matches any protocol that adds postfix to stable ID.
#### General refactoring
#### Docs
- Adds the database migration tutorial.
#### Schema
- Updates the `Message` table of the persistent message store:
- Adds `senderTimestamp` column.
- Renames the `timestamp` column to `receiverTimestamp` and changes its type to `REAL`.
#### API
### Fixes
## 2021-06-03 v0.4
This release contains the following:
### Features
- Initial [`toy-chat` implementation](https://rfc.vac.dev/spec/22/)
### Changes
- The [toy-chat application](https://github.com/status-im/nim-waku/blob/master/docs/tutorial/chat2.md) can now perform `lightpush` and request content-filtered messages from remote peers.
- The [toy-chat application](https://github.com/status-im/nim-waku/blob/master/docs/tutorial/chat2.md) now uses default content topic `/toy-chat/2/huilong/proto`
- Improve `toy-chat` [briding to matterbridge]((https://github.com/status-im/nim-waku/blob/master/docs/tutorial/chat2.md#bridge-messages-between-chat2-and-matterbridge))
- Improve [`swap`](https://rfc.vac.dev/spec/18/) logging and enable soft mode by default
- Content topics are no longer in a redundant nested structure
- Improve error handling
#### API
- [JSON-RPC Store API](https://rfc.vac.dev/spec/16): Added an optional time-based query to filter historical messages.
- [Nim API](https://github.com/status-im/nim-waku/blob/master/docs/api/v2/node.md): Added `resume` method.
### Fixes
- Connections between nodes no longer become unstable due to keep-alive errors if mesh grows large
- Re-enable `lightpush` tests and fix Windows CI failure
The [Waku v2 suite of protocols](https://rfc.vac.dev/) are still in a raw/draft state.
This release supports the following [libp2p protocols](https://docs.libp2p.io/concepts/protocols/):
| Protocol | Spec status | Protocol id |
| ---: | :---: | :--- |
| [`17/WAKU-RLN`](https://rfc.vac.dev/spec/17/) | `raw` | `/vac/waku/waku-rln-relay/2.0.0-alpha1` |
| [`11/WAKU2-RELAY`](https://rfc.vac.dev/spec/11/) | `draft` | `/vac/waku/relay/2.0.0-beta2` |
| [`12/WAKU2-FILTER`](https://rfc.vac.dev/spec/12/) | `draft` | `/vac/waku/filter/2.0.0-beta1` |
| [`13/WAKU2-STORE`](https://rfc.vac.dev/spec/13/) | `draft` | `/vac/waku/store/2.0.0-beta3` |
| [`18/WAKU2-SWAP`](https://rfc.vac.dev/spec/18/) | `draft` | `/vac/waku/swap/2.0.0-beta1` |
| [`19/WAKU2-LIGHTPUSH`](https://rfc.vac.dev/spec/19/) | `draft` | `/vac/waku/lightpush/2.0.0-beta1` |
The Waku v1 implementation is stable but not under active development.
## 2021-05-11 v0.3
This release contains the following:
### Features
- Start of [`RLN relay` implementation](https://rfc.vac.dev/spec/17/)
- Start of [`swap` implementation](https://rfc.vac.dev/spec/18/)
- Start of [fault-tolerant `store` implementation](https://rfc.vac.dev/spec/21/)
- Initial [`bridge` implementation](https://rfc.vac.dev/spec/15/) between Waku v1 and v2 protocols
- Initial [`lightpush` implementation](https://rfc.vac.dev/spec/19/)
- A peer manager for `relay`, `filter`, `store` and `swap` peers
- Persistent storage for peers: A node with this feature enabled will now attempt to reconnect to `relay` peers after a restart. It will respect the gossipsub [PRUNE backoff](https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md#prune-backoff-and-peer-exchange) period before attempting to do so.
- `--persist-peers` CLI option to persist peers in local storage
- `--persist-messages` CLI option to store historical messages locally
- `--keep-alive` CLI option to maintain a stable connection to `relay` peers on idle topics
- A CLI chat application ([`chat2`](https://github.com/status-im/nim-waku/blob/master/docs/tutorial/chat2.md)) over Waku v2 with [bridging to matterbridge](https://github.com/status-im/nim-waku/blob/master/docs/tutorial/chat2.md#bridge-messages-between-chat2-and-matterbridge)
### Changes
- Enable `swap` protocol by default and improve logging
#### General refactoring
- Split out `waku_types` types into the right place; create `utils` folder.
- Change type of `contentTopic` in [`ContentFilter`](https://rfc.vac.dev/spec/12/#protobuf) to `string`.
- Replace sequence of `contentTopics` in [`ContentFilter`](https://rfc.vac.dev/spec/12/#protobuf) with a single `contentTopic`.
- Add `timestamp` field to [`WakuMessage`](https://rfc.vac.dev/spec/14/#payloads).
- Ensure CLI config parameters use a consistent naming scheme. Summary of changes [here](https://github.com/status-im/nim-waku/pull/543).
#### Docs
Several clarifications and additions aimed at contributors, including
- information on [how to query Status test fleet](https://github.com/status-im/nim-waku/blob/master/docs/faq.md) for node addresses,
- [how to view logs](https://github.com/status-im/nim-waku/blob/master/docs/contributors/cluster-logs.md), and
- [how to update submodules](https://github.com/status-im/nim-waku/blob/master/docs/contributors/git-submodules.md).
#### Schema
- Add `Message` table to the persistent message store. This table replaces the old `messages` table. It has two additional columns, namely
- `pubsubTopic`, and
- `version`.
- Add `Peer` table for persistent peer storage.
#### API
- [JSON-RPC Admin API](https://rfc.vac.dev/spec/16): Added a [`post` method](https://rfc.vac.dev/spec/16/#post_waku_v2_admin_v1_peers) to connect to peers on an ad-hoc basis.
- [Nim API](https://github.com/status-im/nim-waku/blob/master/docs/api/v2/node.md): PubSub topic `subscribe` and `unsubscribe` no longer returns a future (removed `async` designation).
- [`HistoryQuery`](https://rfc.vac.dev/spec/13/#historyquery): Added `pubsubTopic` field. Message history can now be filtered and queried based on the `pubsubTopic`.
- [`HistoryQuery`](https://rfc.vac.dev/spec/13/#historyquery): Added support for querying a time window by specifying start and end times.
### Fixes
- Running nodes can now be shut down gracefully
- Content filtering now works on any PubSub topic and not just the `waku` default.
- Nodes can now mount protocols without supporting `relay` as a capability
The [Waku v2 suite of protocols](https://rfc.vac.dev/) are still in a raw/draft state.
This release supports the following [libp2p protocols](https://docs.libp2p.io/concepts/protocols/):
| Protocol | Spec status | Protocol id |
| ---: | :---: | :--- |
| [`17/WAKU-RLN`](https://rfc.vac.dev/spec/17/) | `raw` | `/vac/waku/waku-rln-relay/2.0.0-alpha1` |
| [`18/WAKU2-SWAP`](https://rfc.vac.dev/spec/18/) | `raw` | `/vac/waku/swap/2.0.0-alpha1` |
| [`19/WAKU2-LIGHTPUSH`](https://rfc.vac.dev/spec/19/) | `raw` | `/vac/waku/lightpush/2.0.0-alpha1` |
| [`11/WAKU2-RELAY`](https://rfc.vac.dev/spec/11/) | `draft` | `/vac/waku/relay/2.0.0-beta2` |
| [`12/WAKU2-FILTER`](https://rfc.vac.dev/spec/12/) | `draft` | `/vac/waku/filter/2.0.0-beta1` |
| [`13/WAKU2-STORE`](https://rfc.vac.dev/spec/13/) | `draft` | `/vac/waku/store/2.0.0-beta3` |
The Waku v1 implementation is stable but not under active development.
## 2021-01-05 v0.2
This release contains the following changes:
- Calls to `publish` a message on `wakunode2` now `await` instead of `discard` dispatched [`WakuRelay`](https://github.com/vacp2p/specs/blob/master/specs/waku/v2/waku-relay.md) procedures.
- [`StrictNoSign`](https://github.com/libp2p/specs/tree/master/pubsub#message-signing) enabled.
- Add JSON-RPC API for external access to `wakunode2` functionality:
- Admin API retrieves information about peers registered on the `wakunode2`.
- Debug API exposes debug information about a `wakunode2`.
- Filter API saves bandwidth by allowing light nodes to filter for specific content.
- Private API enables symmetric or asymmetric cryptography to encrypt/decrypt message payloads.
- Relay API allows basic pub/sub functionality.
- Store API retrieves historical messages.
- Add tutorial on how to use JSON-RPC API.
- Refactor: Move `waku_filter` protocol into its own module.
The Waku v2 implementation, and [most protocols it consist of](https://specs.vac.dev/specs/waku/),
are still in a draft/beta state. The Waku v1 implementation is stable but not under active development.
## 2020-11-30 v0.1
Initial beta release.
This release contains:
- A Nim implementation of the [Waku v1 protocol](https://specs.vac.dev/waku/waku.html).
- A Nim implementation of the [Waku v2 protocol](https://specs.vac.dev/specs/waku/v2/waku-v2.html).
- CLI applications `wakunode` and `wakunode2` that allows you to run a Waku v1 or v2 node.
- Examples of Waku v1 and v2 usage.
- Various tests of above.
Currenty the Waku v2 implementation, and [most protocols it consist of](https://specs.vac.dev/specs/waku/),
are in a draft/beta state. The Waku v1 implementation is stable but not under active development.
Feedback welcome!