Ethereum consensus client in Rust
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Paul Hauner 3fdad38eba Remove penality for duplicate attestation from same validator (#2540)
## Issue Addressed

NA

## Proposed Changes

A Discord user presented logs which indicated a drop in their peer count caused by a variety of peers sending attestations where we'd already seen an attestation for that validator. It's presently unclear how this case came about, but during our investigation I noticed that we are down-voting peers for sending such attestations.

There are three scenarios where we may receive duplicate unagg. attestations from the same validator:

1. The validator is committing a slashable offense.
2. The gossipsub message-deduping functionality is not working as expected.
3. We received the message via the HTTP prior to seeing it via gossip.

Scenario (1) would be so costly for an attacker that I don't think we need to add DoS protection for it.

Scenario (2) seems feasible. Our "seen message" caches in gossipsub might fill up/expire and let through these duplicates. There are also cases involving message ID mismatches with the other peers. In both these cases, I don't think we should be doing 1 attestation == -1 point down-voting.

Scenario (3) is not necessarily a fault of the peer and we shouldn't down-score them for it.

## Additional Info

NA
2021-08-26 08:00:50 +00:00
.github Windows binaries (#2492) 2021-08-24 01:36:26 +00:00
account_manager Upgrade dependencies (#2513) 2021-08-17 01:00:24 +00:00
beacon_node Remove penality for duplicate attestation from same validator (#2540) 2021-08-26 08:00:50 +00:00
book Windows binaries (#2492) 2021-08-24 01:36:26 +00:00
boot_node Packet filter cli option (#2523) 2021-08-26 00:29:39 +00:00
common v1.5.0 (#2535) 2021-08-23 04:27:36 +00:00
consensus Fork schedule api (#2525) 2021-08-24 01:36:27 +00:00
crypto Upgrade dependencies (#2513) 2021-08-17 01:00:24 +00:00
lcli v1.5.0 (#2535) 2021-08-23 04:27:36 +00:00
lighthouse v1.5.0 (#2535) 2021-08-23 04:27:36 +00:00
remote_signer Rust 1.54.0 lints (#2483) 2021-07-30 01:11:47 +00:00
scripts Packet filter cli option (#2523) 2021-08-26 00:29:39 +00:00
slasher Upgrade dependencies (#2513) 2021-08-17 01:00:24 +00:00
testing Upgrade dependencies (#2513) 2021-08-17 01:00:24 +00:00
validator_client Always require auth header in VC (#2517) 2021-08-18 01:31:28 +00:00
.dockerignore Use OS file locks in validator client (#1958) 2020-11-26 11:25:46 +00:00
.editorconfig Add editorconfig template 2019-03-11 15:09:57 +11:00
.gitignore Delete uncompressed genesis states (#2092) 2020-12-16 03:44:05 +00:00
.gitmodules Replace EF tests submodule with a makefile 2019-09-08 04:19:54 +10:00
bors.toml Add Windows to Bors config (#2358) 2021-05-20 00:23:08 +00:00
Cargo.lock Security update for openssl (#2539) 2021-08-25 03:13:41 +00:00
Cargo.toml Improve compilation error on 32-bit (#2424) 2021-06-30 04:56:22 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md (#751) 2020-01-03 10:45:53 +11:00
Cross.toml Ensure RUSTFLAGS is passed through on cross compile (#1529) 2020-08-17 10:06:06 +00:00
Dockerfile Update outdated dependencies (#2425) 2021-07-05 00:54:17 +00:00
Dockerfile.cross Multiarch docker GitHub actions (#2065) 2020-12-09 06:06:37 +00:00
LICENSE Update License to Apache 2.0 2019-04-15 16:47:35 +10:00
Makefile Bump libp2p to address inconsistency in mesh peer tracking (#2493) 2021-08-12 01:59:20 +00:00
README.md Fix readme typo (#2312) 2021-04-14 02:30:54 +00:00

Lighthouse: Ethereum 2.0

An open-source Ethereum 2.0 client, written in Rust and maintained by Sigma Prime.

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Overview

Lighthouse is:

  • Ready for use on Eth2 mainnet.
  • Fully open-source, licensed under Apache 2.0.
  • Security-focused. Fuzzing techniques have been continuously applied and several external security reviews have been performed.
  • Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
  • Funded by various organisations, including Sigma Prime, the Ethereum Foundation, ConsenSys, the Decentralization Foundation and private individuals.
  • Actively involved in the specification and security analysis of the Ethereum 2.0 specification.

Eth2 Deposit Contract

The Lighthouse team acknowledges 0x00000000219ab540356cBB839Cbe05303d7705Fa as the canonical Eth2 deposit contract address.

Documentation

The Lighthouse Book contains information for users and developers.

The Lighthouse team maintains a blog at lighthouse.sigmaprime.io which contains periodical progress updates, roadmap insights and interesting findings.

Branches

Lighthouse maintains two permanent branches:

  • stable: Always points to the latest stable release.
    • This is ideal for most users.
  • unstable: Used for development, contains the latest PRs.
    • Developers should base their PRs on this branch.

Contributing

Lighthouse welcomes contributors.

If you are looking to contribute, please head to the Contributing section of the Lighthouse book.

Contact

The best place for discussion is the Lighthouse Discord server. Alternatively, you may use the sigp/lighthouse gitter.

Sign up to the Lighthouse Development Updates mailing list for email notifications about releases, network status and other important information.

Encrypt sensitive messages using our PGP key.

Donations

Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:

  • Gitcoin Grants.
  • Ethereum address: 0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b (donation.sigmaprime.eth).