History

tersec 45b4b46041 use "reason" instead of "error"/"validatorError" to log gossip ignore/reject reasons (#5839 )		2024-01-31 03:18:20 +00:00
..
README.md	consensus spec v1.4.0-beta.5 URL updates (#5672 )	2023-12-16 03:27:06 +01:00
batch_validation.nim	raises for gossip (#5808 )	2024-01-22 17:34:54 +01:00
block_processor.nim	unrevert more of https://github.com/status-im/nimbus-eth2/pull/5765 (#5834 )	2024-01-29 08:35:16 +01:00
eth2_processor.nim	use "reason" instead of "error"/"validatorError" to log gossip ignore/reject reasons (#5839 )	2024-01-31 03:18:20 +00:00
gossip_validation.nim	raises for gossip (#5808 )	2024-01-22 17:34:54 +01:00
light_client_processor.nim	raises for gossip (#5808 )	2024-01-22 17:34:54 +01:00
optimistic_processor.nim	raises for gossip (#5808 )	2024-01-22 17:34:54 +01:00

Gossip Processing

This folder holds a collection of modules to:

validate raw gossip data before
- rebroadcasting it (potentially aggregated)
- sending it to one of the consensus object pools

Validation

Gossip validation is different from consensus verification in particular for blocks.

There are multiple consumers of validated consensus objects:

a ValidationResult.Accept output triggers rebroadcasting in libp2p
- We jump into method validate(PubSub, Message) in libp2p/protocols/pubsub/pubsub.nim
- which was called by rpcHandler(GossipSub, PubSubPeer, RPCMsg)
a blockValidator message enqueues the validated object to the processing queue in block_processor
- blockQueue: AsyncQueue[BlockEntry] (shared with request_manager and sync_manager)
- This queue is then regularly processed to be made available to the consensus object pools.
a xyzValidator message adds the validated object to a pool in eth2_processor
- Attestations (unaggregated and aggregated) get collected into batches.
- Once a threshold is exceeded or after a timeout, they get validated together using BatchCrypto.

As the first line of defense in Nimbus, modules must be able to handle bursts of data that may come: