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Gossipsub fast message id change (#3755)

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For improved consistency, this mixes in the topic into our fast message id for more consistent tracking of messages across topics.
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Age Manning 2022-11-28 07:36:52 +00:00
parent c881b80367
commit 2779017076
1 changed files with 5 additions and 3 deletions
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8
beacon_node/lighthouse_network/src/config.rs
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@ -288,9 +288,11 @@ impl From<u8> for NetworkLoad {
/// Return a Lighthouse specific `GossipsubConfig` where the `message_id_fn` depends on the current fork. /// Return a Lighthouse specific `GossipsubConfig` where the `message_id_fn` depends on the current fork.
pub fn gossipsub_config(network_load: u8, fork_context: Arc<ForkContext>) -> GossipsubConfig { pub fn gossipsub_config(network_load: u8, fork_context: Arc<ForkContext>) -> GossipsubConfig {
// The function used to generate a gossipsub message id // The function used to generate a gossipsub message id
// We use the first 8 bytes of SHA256(data) for content addressing // We use the first 8 bytes of SHA256(topic, data) for content addressing
let fast_gossip_message_id = let fast_gossip_message_id = |message: &RawGossipsubMessage| {
|message: &RawGossipsubMessage| FastMessageId::from(&Sha256::digest(&message.data)[..8]); let data = [message.topic.as_str().as_bytes(), &message.data].concat();
FastMessageId::from(&Sha256::digest(data)[..8])
};
fn prefix( fn prefix(
prefix: [u8; 4], prefix: [u8; 4],
message: &GossipsubMessage, message: &GossipsubMessage,