This bug was first found and partially fixed by @VolodymyrBg in #7317 - this PR applies the same fix everywhere else.
The old logic updated the waker when it already matched the context, and did nothing when it was stale:
```rust
if waker.will_wake(cx.waker()) {
self.waker = Some(cx.waker().clone());
}
```
This is the wrong way around. We only want to update the waker if it doesn't match the current context:
```rust
if !waker.will_wake(cx.waker()) {
self.waker = Some(cx.waker().clone());
}
```
I don't think we've ever noticed any issues, but it’s a subtle bug that could lead to missed wakeups.
* Attestation superstruct changes for EIP 7549 (#5644)
* update
* experiment
* superstruct changes
* revert
* superstruct changes
* fix tests
* indexed attestation
* indexed attestation superstruct
* updated TODOs
* `superstruct` the `AttesterSlashing` (#5636)
* `superstruct` Attester Fork Variants
* Push a little further
* Deal with Encode / Decode of AttesterSlashing
* not so sure about this..
* Stop Encode/Decode Bounds from Propagating Out
* Tons of Changes..
* More Conversions to AttestationRef
* Add AsReference trait (#15)
* Add AsReference trait
* Fix some snafus
* Got it Compiling! :D
* Got Tests Building
* Get beacon chain tests compiling
---------
Co-authored-by: Michael Sproul <micsproul@gmail.com>
* Merge remote-tracking branch 'upstream/unstable' into electra_attestation_changes
* Make EF Tests Fork-Agnostic (#5713)
* Finish EF Test Fork Agnostic (#5714)
* Superstruct `AggregateAndProof` (#5715)
* Upgrade `superstruct` to `0.8.0`
* superstruct `AggregateAndProof`
* Merge remote-tracking branch 'sigp/unstable' into electra_attestation_changes
* cargo fmt
* Merge pull request #5726 from realbigsean/electra_attestation_changes
Merge unstable into Electra attestation changes
* EIP7549 `get_attestation_indices` (#5657)
* get attesting indices electra impl
* fmt
* get tests to pass
* fmt
* fix some beacon chain tests
* fmt
* fix slasher test
* fmt got me again
* fix more tests
* fix tests
* Some small changes (#5739)
* cargo fmt (#5740)
* Sketch op pool changes
* fix get attesting indices (#5742)
* fix get attesting indices
* better errors
* fix compile
* only get committee index once
* Ef test fixes (#5753)
* attestation related ef test fixes
* delete commented out stuff
* Fix Aggregation Pool for Electra (#5754)
* Fix Aggregation Pool for Electra
* Remove Outdated Interface
* fix ssz (#5755)
* Get `electra_op_pool` up to date (#5756)
* fix get attesting indices (#5742)
* fix get attesting indices
* better errors
* fix compile
* only get committee index once
* Ef test fixes (#5753)
* attestation related ef test fixes
* delete commented out stuff
* Fix Aggregation Pool for Electra (#5754)
* Fix Aggregation Pool for Electra
* Remove Outdated Interface
* fix ssz (#5755)
---------
Co-authored-by: realbigsean <sean@sigmaprime.io>
* Revert "Get `electra_op_pool` up to date (#5756)" (#5757)
This reverts commit ab9e58aa3d.
* Merge branch 'electra_attestation_changes' of https://github.com/sigp/lighthouse into electra_op_pool
* Compute on chain aggregate impl (#5752)
* add compute_on_chain_agg impl to op pool changes
* fmt
* get op pool tests to pass
* update the naive agg pool interface (#5760)
* Fix bugs in cross-committee aggregation
* Add comment to max cover optimisation
* Fix assert
* Merge pull request #5749 from sigp/electra_op_pool
Optimise Electra op pool aggregation
* update committee offset
* Fix Electra Fork Choice Tests (#5764)
* Subscribe to the correct subnets for electra attestations (#5782)
* subscribe to the correct att subnets for electra
* subscribe to the correct att subnets for electra
* cargo fmt
* fix slashing handling
* Merge remote-tracking branch 'upstream/unstable'
* Send unagg attestation based on fork
* Publish all aggregates
* just one more check bro plz..
* Merge pull request #5832 from ethDreamer/electra_attestation_changes_merge_unstable
Merge `unstable` into `electra_attestation_changes`
* Merge pull request #5835 from realbigsean/fix-validator-logic
Fix validator logic
* Merge pull request #5816 from realbigsean/electra-attestation-slashing-handling
Electra slashing handling
* Electra attestation changes rm decode impl (#5856)
* Remove Crappy Decode impl for Attestation
* Remove Inefficient Attestation Decode impl
* Implement Schema Upgrade / Downgrade
* Update beacon_node/beacon_chain/src/schema_change/migration_schema_v20.rs
Co-authored-by: Michael Sproul <micsproul@gmail.com>
---------
Co-authored-by: Michael Sproul <micsproul@gmail.com>
* Fix failing attestation tests and misc electra attestation cleanup (#5810)
* - get attestation related beacon chain tests to pass
- observed attestations are now keyed off of data + committee index
- rename op pool attestationref to compactattestationref
- remove unwraps in agg pool and use options instead
- cherry pick some changes from ef-tests-electra
* cargo fmt
* fix failing test
* Revert dockerfile changes
* make committee_index return option
* function args shouldnt be a ref to attestation ref
* fmt
* fix dup imports
---------
Co-authored-by: realbigsean <seananderson33@GMAIL.com>
* fix some todos (#5817)
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into electra_attestation_changes
* add consolidations to merkle calc for inclusion proof
* Remove Duplicate KZG Commitment Merkle Proof Code (#5874)
* Remove Duplicate KZG Commitment Merkle Proof Code
* s/tree_lists/fields/
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into electra_attestation_changes
* fix compile
* Fix slasher tests (#5906)
* Fix electra tests
* Add electra attestations to double vote tests
* Update superstruct to 0.8
* Merge remote-tracking branch 'origin/unstable' into electra_attestation_changes
* Small cleanup in slasher tests
* Clean up Electra observed aggregates (#5929)
* Use consistent key in observed_attestations
* Remove unwraps from observed aggregates
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into electra_attestation_changes
* De-dup attestation constructor logic
* Remove unwraps in Attestation construction
* Dedup match_attestation_data
* Remove outdated TODO
* Use ForkName Ord in fork-choice tests
* Use ForkName Ord in BeaconBlockBody
* Make to_electra not fallible
* Remove TestRandom impl for IndexedAttestation
* Remove IndexedAttestation faulty Decode impl
* Drop TestRandom impl
* Add PendingAttestationInElectra
* Indexed att on disk (#35)
* indexed att on disk
* fix lints
* Update slasher/src/migrate.rs
Co-authored-by: ethDreamer <37123614+ethDreamer@users.noreply.github.com>
---------
Co-authored-by: Lion - dapplion <35266934+dapplion@users.noreply.github.com>
Co-authored-by: ethDreamer <37123614+ethDreamer@users.noreply.github.com>
* add electra fork enabled fn to ForkName impl (#36)
* add electra fork enabled fn to ForkName impl
* remove inadvertent file
* Update common/eth2/src/types.rs
Co-authored-by: ethDreamer <37123614+ethDreamer@users.noreply.github.com>
* Dedup attestation constructor logic in attester cache
* Use if let Ok for committee_bits
* Dedup Attestation constructor code
* Diff reduction in tests
* Fix beacon_chain tests
* Diff reduction
* Use Ord for ForkName in pubsub
* Resolve into_attestation_and_indices todo
* Remove stale TODO
* Fix beacon_chain tests
* Test spec invariant
* Use electra_enabled in pubsub
* Remove get_indexed_attestation_from_signed_aggregate
* Use ok_or instead of if let else
* committees are sorted
* remove dup method `get_indexed_attestation_from_committees`
* Merge pull request #5940 from dapplion/electra_attestation_changes_lionreview
Electra attestations #5712 review
* update default persisted op pool deserialization
* ensure aggregate and proof uses serde untagged on ref
* Fork aware ssz static attestation tests
* Electra attestation changes from Lions review (#5971)
* dedup/cleanup and remove unneeded hashset use
* remove irrelevant TODOs
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into electra_attestation_changes
* Electra attestation changes sean review (#5972)
* instantiate empty bitlist in unreachable code
* clean up error conversion
* fork enabled bool cleanup
* remove a couple todos
* return bools instead of options in `aggregate` and use the result
* delete commented out code
* use map macros in simple transformations
* remove signers_disjoint_from
* get ef tests compiling
* get ef tests compiling
* update intentionally excluded files
* Avoid changing slasher schema for Electra
* Delete slasher schema v4
* Fix clippy
* Fix compilation of beacon_chain tests
* Update database.rs
* Add electra lightclient types
* Update slasher/src/database.rs
* fix imports
* Merge pull request #5980 from dapplion/electra-lightclient
Add electra lightclient types
* Merge pull request #5975 from michaelsproul/electra-slasher-no-migration
Avoid changing slasher schema for Electra
* Update beacon_node/beacon_chain/src/attestation_verification.rs
* Update beacon_node/beacon_chain/src/attestation_verification.rs
## Issue Addressed
#4654
## Proposed Changes
Only log error if we're unable to read slot clock after genesis.
I thought about simply down grading the `error` to a `warn`, but feel like it's still unnecessary noise before genesis, and it would be good to retain error log if we're pass genesis. But I'd be ok with just downgrading the log level, too.
This PR address the following spec change: https://github.com/ethereum/consensus-specs/pull/3312
Instead of subscribing to a long-lived subnet for every attached validator to a beacon node, all beacon nodes will subscribe to `SUBNETS_PER_NODE` long-lived subnets. This is currently set to 2 for mainnet.
This PR does not include any scoring or advanced discovery mechanisms. A future PR will improve discovery and we can implement scoring after the next hard fork when we expect all client teams and all implementations to respect this spec change.
This will be a significant change in the subnet network structure for consensus clients and we will likely have to monitor and tweak our peer management logic.
It is a well-known fact that IP addresses for beacon nodes used by specific validators can be de-anonymized. There is an assumed risk that a malicious user may attempt to DOS validators when producing blocks to prevent chain growth/liveness.
Although there are a number of ideas put forward to address this, there a few simple approaches we can take to mitigate this risk.
Currently, a Lighthouse user is able to set a number of beacon-nodes that their validator client can connect to. If one beacon node is taken offline, it can fallback to another. Different beacon nodes can use VPNs or rotate IPs in order to mask their IPs.
This PR provides an additional setup option which further mitigates attacks of this kind.
This PR introduces a CLI flag --proposer-only to the beacon node. Setting this flag will configure the beacon node to run with minimal peers and crucially will not subscribe to subnets or sync committees. Therefore nodes of this kind should not be identified as nodes connected to validators of any kind.
It also introduces a CLI flag --proposer-nodes to the validator client. Users can then provide a number of beacon nodes (which may or may not run the --proposer-only flag) that the Validator client will use for block production and propagation only. If these nodes fail, the validator client will fallback to the default list of beacon nodes.
Users are then able to set up a number of beacon nodes dedicated to block proposals (which are unlikely to be identified as validator nodes) and point their validator clients to produce blocks on these nodes and attest on other beacon nodes. An attack attempting to prevent liveness on the eth2 network would then need to preemptively find and attack the proposer nodes which is significantly more difficult than the default setup.
This is a follow on from: #3328
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
## Issue Addressed
#2847
## Proposed Changes
Add under a feature flag the required changes to subscribe to long lived subnets in a deterministic way
## Additional Info
There is an additional required change that is actually searching for peers using the prefix, but I find that it's best to make this change in the future
## Issue Addressed
🐞 in which we don't actually unsubscribe from a random long lived subnet when it expires
## Proposed Changes
Remove code addressing a specific case in which we are subscribed to all subnets and handle the removal of the long lived subnet. I don't think the special case code is particularly important as, if someone is running with that many validators to be subscribed to all subnets, it should use `--subscribe-all-subnets` instead
## Additional Info
Noticed on some test nodes climbing bandwidth usage periodically (around 27hours, the time of subnet expirations) I'm running this code to test this does not happen anymore, but I think it should be good now
## Issue Addressed
We currently subscribe to attestation subnets as soon as the subscription arrives (one epoch in advance), this makes it so that subscriptions for future slots are scheduled instead of done immediately.
## Proposed Changes
- Schedule subscriptions to subnets for future slots.
- Finish removing hashmap_delay, in favor of [delay_map](https://github.com/AgeManning/delay_map). This was the only remaining service to do this.
- Subscriptions for past slots are rejected, before we would subscribe for one slot.
- Add a new test for subscriptions that are not consecutive.
## Additional Info
This is also an effort in making the code easier to understand
## Issue Addressed
I noticed in some logs some excess and unecessary discovery queries. What was happening was we were pruning our peers down to our outbound target and having some disconnect. When we are below this threshold we try to find more peers (even if we are at our peer limit). The request becomes futile because we have no more peer slots.
This PR corrects this issue and advances the pruning mechanism to favour subnet peers.
An overview the new logic added is:
- We prune peers down to a target outbound peer count which is higher than the minimum outbound peer count.
- We only search for more peers if there is room to do so, and we are below the minimum outbound peer count not the target. So this gives us some buffer for peers to disconnect. The buffer is currently 10%
The modified pruning logic is documented in the code but for reference it should do the following:
- Prune peers with bad scores first
- If we need to prune more peers, then prune peers that are subscribed to a long-lived subnet
- If we still need to prune peers, the prune peers that we have a higher density of on any given subnet which should drive for uniform peers across all subnets.
This will need a bit of testing as it modifies some significant peer management behaviours in lighthouse.
## Description
The `eth2_libp2p` crate was originally named and designed to incorporate a simple libp2p integration into lighthouse. Since its origins the crates purpose has expanded dramatically. It now houses a lot more sophistication that is specific to lighthouse and no longer just a libp2p integration.
As of this writing it currently houses the following high-level lighthouse-specific logic:
- Lighthouse's implementation of the eth2 RPC protocol and specific encodings/decodings
- Integration and handling of ENRs with respect to libp2p and eth2
- Lighthouse's discovery logic, its integration with discv5 and logic about searching and handling peers.
- Lighthouse's peer manager - This is a large module handling various aspects of Lighthouse's network, such as peer scoring, handling pings and metadata, connection maintenance and recording, etc.
- Lighthouse's peer database - This is a collection of information stored for each individual peer which is specific to lighthouse. We store connection state, sync state, last seen ips and scores etc. The data stored for each peer is designed for various elements of the lighthouse code base such as syncing and the http api.
- Gossipsub scoring - This stores a collection of gossipsub 1.1 scoring mechanisms that are continuously analyssed and updated based on the ethereum 2 networks and how Lighthouse performs on these networks.
- Lighthouse specific types for managing gossipsub topics, sync status and ENR fields
- Lighthouse's network HTTP API metrics - A collection of metrics for lighthouse network monitoring
- Lighthouse's custom configuration of all networking protocols, RPC, gossipsub, discovery, identify and libp2p.
Therefore it makes sense to rename the crate to be more akin to its current purposes, simply that it manages the majority of Lighthouse's network stack. This PR renames this crate to `lighthouse_network`
Co-authored-by: Paul Hauner <paul@paulhauner.com>
