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10/WAKU2: Specify length prefix (#349)

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Oskar Thorén 2021-04-20 16:51:51 +08:00 committed by GitHub
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@ -61,6 +61,13 @@ These protocols and their semantics are elaborated on in their own specs.
For the actual content being passed around, see the [7/WAKU-DATA](/spec/7) spec. For the actual content being passed around, see the [7/WAKU-DATA](/spec/7) spec.
## Use of libp2p and protobuf
Unless otherwise specified, all protocols are implemented over libp2p and use Protobuf by default.
Since messages are exchanged over a [bi-directional binary stream](https://docs.libp2p.io/concepts/protocols/),
as a convention, libp2p protocols prefix binary message payloads with the length of the message in bytes.
This length integer is encoded as a [protobuf varint](https://developers.google.com/protocol-buffers/docs/encoding#varints).
## Gossip domain ## Gossip domain
**Protocol identifier**: `/vac/waku/relay/2.0.0-beta2` **Protocol identifier**: `/vac/waku/relay/2.0.0-beta2`
@ -293,22 +300,24 @@ Copyright and related rights waived via [CC0](https://creativecommons.org/public
4. [Protocol Identifiers](https://docs.libp2p.io/concepts/protocols/) 4. [Protocol Identifiers](https://docs.libp2p.io/concepts/protocols/)
5. [7/WAKU-DATA spec](/spec/7) 5. [Protobuf varint encoding](https://developers.google.com/protocol-buffers/docs/encoding#varints)
6. [11/WAKU2-RELAY spec](/spec/11) 6. [7/WAKU-DATA spec](/spec/7)
7. [13/WAKU2-STORE spec](/spec/13) 7. [11/WAKU2-RELAY spec](/spec/11)
8. [12/WAKU2-FILTER spec](/spec/12) 8. [13/WAKU2-STORE spec](/spec/13)
9. [15/WAKU2-BRIDGE spec](/spec/15) 9. [12/WAKU2-FILTER spec](/spec/12)
10. [k-anonymity](https://www.privitar.com/blog/k-anonymity-an-introduction/) 10. [15/WAKU2-BRIDGE spec](/spec/15)
11. [GossipSub v1.1](https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md) 11. [k-anonymity](https://www.privitar.com/blog/k-anonymity-an-introduction/)
14. [14/WAKU2-MESSAGE spec](/spec/14) 12. [GossipSub v1.1](https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md)
17. [14/WAKU2-RLNRELAY spec](/spec/17) 13. [14/WAKU2-MESSAGE spec](/spec/14)
18. [18/WAKU2-SWAP spec](/spec/18) 14. [14/WAKU2-RLNRELAY spec](/spec/17)
15. [18/WAKU2-SWAP spec](/spec/18)