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standards/core/lightpush.md
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@ -1,7 +1,6 @@
---
title: WAKU2-LIGHTPUSH
name: Waku v2 Light Push
status: draft
name: Waku Light Push
editor: Zoltan Nagy <zoltan@status.im>
contributors:
- Hanno Cornelius <hanno@status.im>
@ -21,7 +20,7 @@ A common use case is to request that service node to publish the message to a `1
Additionally, there is sometimes a need for confirmation that a message has been received "by the network"
(here, at least one node).
`WAKU2-LIGHTPUSH` is a request/response protocol for this.
`WAKU-LIGHTPUSH` is a request/response protocol for this.
## Payloads
@ -29,9 +28,9 @@ Additionally, there is sometimes a need for confirmation that a message has been
syntax = "proto3";
message LightPushRequest {
string request_id = 1;
uin32 request_type = 10; // reserved for future request type selection, currently it is always RELAY (0)
string topic = 20;
string request_id = 1;
uin32 request_type = 10; // 10 Reserved for future `request_type`. Currently RELAY is only available service.
optional string pubsub_topic = 20;
WakuMessage message = 21;
}
@ -45,18 +44,18 @@ message LightPushResponse {
### Message Relaying
Nodes that respond to `LightPushRequest` MUST either relay the encapsulated message via [11/WAKU2-RELAY](https://rfc.vac.dev/waku/standards/core/11/relay) protocol on the specified `pubsub_topic` or `shard` ([WAKU2-RELAY-SHARDING](https://github.com/waku-org/specs/blob/master/standards/core/relay-sharding.md)) depending on the network configuration.
Nodes that respond to `LightPushRequest` MUST either relay the encapsulated message via [11/WAKU2-RELAY](https://rfc.vac.dev/waku/standards/core/11/relay) protocol on the specified `pubsub_topic`. Depending on the network configuration, user may not need to provide `pubsub_topic` ([WAKU2-RELAY-SHARDING](https://github.com/waku-org/specs/blob/master/standards/core/relay-sharding.md)).
If they are unable to do so for some reason, they SHOULD return an error code in `LightPushResponse`.
### Examples of possible error codes
| Result | Code | Note |
|--------|------|------|
| SUCCESS | 0 | Successfull push, response's relay_peer_count holds the number of peers the message is pushed. |
| BAD_REQUEST | 400 | |
| NO_PEERS_TO_RELAY | 404 | Service node has no relay peers |
| SUCCESS | 200 | Successfull push, response's relay_peer_count holds the number of peers the message is pushed. |
| BAD_REQUEST | 400 | Wrong request payload. |
| NO_PEERS_TO_RELAY | 404 | Service node has no relay peers. |
| PAYLOAD_TOO_LARGE | 413 | Message exceeds certain size limit, it can depend on network configuration, see status_desc for details. |
| UNSUPPORTED_TOPIC | 415 | Requested push on pubsub_topic or shard is not possible as the service node is not subscibed to. |
| UNSUPPORTED_TOPIC | 421 | Requested push on pubsub_topic is not possible as the service node does not support it. |
| TOO_MANY_REQUESTS | 429 | DOS protection prevented this request as the current request exceeds the configured request rate. |
| INTERNAL_SERVER_ERROR | 500 | status_desc holds explanation of the error. |
| SERVICE_UNAVAILABLE | 503 | Lightpush service not available |
@ -66,7 +65,7 @@ If they are unable to do so for some reason, they SHOULD return an error code in
## Security Considerations
Since this can introduce an amplification factor, it is RECOMMENDED for the node relaying to the rest of the network to take extra precautions.
Therefore Waku2 applies or will apply:
Therefore Waku applies or will apply:
- DOS protection through request rate limitation on the service itself.
- message rate limiting via [17/WAKU2-RLN-RELAY](https://rfc.vac.dev/waku/standards/core/17/rln-relay), applied via network membership subscription.