History

zah ca3245c4f0 Doppelganger exit code changed from 1031 to 129 (addresses #3973 ) (#3977 )		2022-08-17 08:13:55 +02:00
..
README.md	update CL spec URLs (#3690 )	2022-06-01 15:52:45 +00:00
batch_validation.nim	compatibility with Nim 1.4+ (#3888 )	2022-07-29 10:53:42 +00:00
block_processor.nim	compatibility with Nim 1.4+ (#3888 )	2022-07-29 10:53:42 +00:00
eth2_processor.nim	Doppelganger exit code changed from 1031 to 129 (addresses #3973 ) (#3977 )	2022-08-17 08:13:55 +02:00
gossip_validation.nim	Implement a missing ingnore rule for sync committee contributions (#3941 )	2022-08-09 12:52:11 +03:00
light_client_processor.nim	compatibility with Nim 1.4+ (#3888 )	2022-07-29 10:53:42 +00:00

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: