64 posts tagged with "network"

Overview of sprints 110, 111, 112 and 113.​

Summary​

Leios​

The mux egress prioritisation issue was resolved, delivering static priority-based scheduling for mini-protocols. Work on weighted fair queueing with token bucket support was concluded: it allows bursty protocols to send multiple SDUs back-to-back without starving other mini-protocols. However, right now we don't have evidence that the additional complexity is really needed to achive better performance. A TxSubmission V2 demo is being merged, and an alternative design without a central decision thread is being explored.

Ouroboros-Network​

Tx-submission v2 now returns results from submitTxToMempool, a prerequisite for DMQ-Node integration. The long-standing ChurnMode refactoring was merged, together with a property-based tx integrity test for cardano-diffusion. Nodes now warn about misconfigured local socket permissions (an issue identified by Claude LLM). A fix for initial syncing targets is under review, which will reduce load on bootstrap relays during node startup by setting lower active-peer targets before the first churn cycle.

DMQ-Node​

Versions 0.3.0.0 and 0.4.0.0 were released. The 0.4.0.0 release includes trace-dispatcher integration, Prometheus metrics, and CLI improvements. Work is ongoing on an announciness metric for peer selection — scoring peers by how often they are first to announce a valid signature — and on connecting the DMQ kernel to cardano-node.

Leios​

PR / Issue	Status	Sprint
TxSubmissionV2 demo	in review	112
tx-submission v2: undecision	in progress	112
network-mux: weighted fair queueing and token bucket for burst support	in progress	111
Mux: single peer performance for Leios	in progress	110
Mux egress prioritisation	resolved	110

Ouroboros-Network​

PR / Issue	Status	Sprint	Notes
tx-submission v2: return results in submitTxToMempool	merged	113
drop support for x86_64-darwin	merged	113	contribution by dermetfan
Local socket access right warnings	merged	113
connection-manager: added a comment	merged	113
Clarify LedgerPeersConsensusInterface	in review	113
Fix initial syncing targets	in review	113
Various small changes	in review	113
cardano-diffusion: tx integrity test	merged	112
ChurnMode refactored	merged	112
Code refactoring (burst engine)	merged	112	related to WFQ
Removed AcquireConnectionError	merged	111
Updated documentation	merged	111
new tracing: fixed Stateful.TraceRecvMsg	merged	110
LocalRootPeers - ToJSON instance	merged	110
Fixed peerselection test failure	merged	110
cardano ping implemented with ouroboros-network	blocked	110

DMQ-Node​

PR / Issue	Status	Sprint
announciness metric for peer selection	in progress	113
node kernel cleanup	in progress	113
Prometheus prefix	merged	111
Prometheus counters prefix	merged	111
CLI improvements	merged	111
dmq-node-0.4.0.0	merged	111
trace-dispatcher integration	merged	110
dmq-node-0.3.0.0 release	merged	110

IOSim​

PR / Issue	Status	Sprint
Remove withLiftST	merged	112
io-classes-1.10.1.0	merged	112
Add IOSimPOR QuickCheck monadic combinators	merged	110

Typed Protocols​

PR / Issue	Status	Sprint
support io-classes-1.10	merged	112

Contra Tracer​

PR / Issue	Status	Sprint
Contra.Tracer extra APIs	merged	110

Overview of sprints: 108 and 109.​

Cardano Node 10.7.0​

We relased

• ouroboros-network-1.0.0.0 (later refined with ouroboros-network-1.1.0.0
• cardano-diffusion-1.1.0.0 which are integrated with the ongoing cardano-node-10.7 release.

See release board for all PRs included in these releases.

Leios​

PR / Issue	Status
Mux egress prioritisation	in progress
Performance improvement for tx-submission v2	in progress
TxSubmissionV2 demo	in progress
Expand network section	in review

Ouroboros-Network​

PR / Issue	Status	Notes
tx-submission robustness and testing enhancements	merged
RNG handling in SRV lookups for public root peers	closed	contribution by Saviour Uzoukwu
cardano ping implemented with ouroboros-network	blocked
mux: refactored ReadBuffer & socket API changes	merged
ledger-peers: introduced SignLedgerPeersKind	merged
cardano-ping: output valid JSON when no pongs are received	merged
Add {To,From}JSON instances for TxSubmissionLogicVersion	merged
[Cardano Topology: module exports][pr#5339]	merged
Haddock improvements	merged

DMQ-Node​

PR / Issue	Status	notes
SigSubmission v2	merged
Integration with cardano-tracer	in progress
[Churn test][#5303]	merged
Updated dependencies of dmq-node	merged
Improved documentation	merged
Fixed number of unacknowledged sigIds on the outbound side	merged
[Added pattern synonyms for EraIndex (CardanoEras c)][pr#1919]	merged	ouroboros-consensus change needed for Ledger peers
Ledger peers	merged
[dmq-node-0.3.0.0 pre-release][pr#37]	merged
Haddocks, docs & release scripts	merged

IOSim​

PR / Issue	Status
Added flushEventLog to MonadEventlog	merged
io-sim improvements	merged
PR review comments	merged
ghc-9.14 support	merged
io-sim: io-classes constraint	merged

Overview of sprint 107.​

Cardano Node 10.5.4​

We rolled out cardano-node-10.5.4 release.

Leios​

PR / Issue	Status
Mux Leios Simulation	merged
Mux egress prioritisation	in progress
Mux egress fairness	resolved

Ouroboros-Network​

PR / Issue	Status	Notes
StandardHash with NFData constraint	merged
Tracing Libraries	merged
[tx-submission robustness and testing enhancements][pr#5315]	in review
RNG handling in SRV lookups for public root peers	in review	contribution by Saviour Uzoukwu
cardano ping implemented with ouroboros-network	blocked

Documentation​

• docs: fix typos across documentation by Ronald Eddy Jr

Maintenance​

• release scripts
• [scrive: added patch level fragments][pr#52306]
• Updates index-state, removed srp

DMQ-Node​

PR / Issue	Status
SigSubmission v2	in review
Integration with cardano-tracer	in progress
[Set the correct magic field][pr#30]	merged
[Churn test][#5303]	in review

Overview of sprints: 103, 104, 105, 106.​

The most important changes are patches developed after the November fork incident on Mainnet, which make the diffusion layer more robust. These patches are released in the cardano-node-10.5.4 release. We highly recommend updating to 10.5.4 as these change make the Cardano Network more robust. We'd like to thank Karl Knutsson (CF) who developed these patches.

This report only contains issues/PRs finished/merged in the sprints 103 through 106. Work that has been carried and finished in the current sprint will be reported in the future.

Ouroboros-Network​

Diffusion​

• Optimised connectivity to peers behind firewall
• ChainSync timeouts:
  • no chain-sync StNext StMustReply timeout for trustable local root peers
• More robust diffusion A series of patches after the November incident:
  • enforce max reconnection attempts,
  • use shorter timeout when waiting on chain-sync to exit,
  • block-fetch: exclude peers that are shutting down in active peers calculation,
  • chain-sync: bumped StNext StMustReply timeout from a range of 135-269s to 601-911s.
• WASM support

Cardano-Ping​

• Unknown version received in cardano-cli ping

Leios​

• Network mux demo for analysing Leios/Praos traffic
• mux leios simulation

Technical Debt​

• Small changes
• fixed nightly build
• Removed duplicate trace events
• Fixed a typo

Cardano-Node​

• networking adjustments for the new tracing system

DMQ-Node​

• Signature verification
• Moved dmq-node to its own repo
• Enhance validation logic
• Mempool fixes: various bug fixes and code refactorings for the dmq-node.
• PeerSelectionPoolicy for dmq-node

Overview of spint 102​

Leios​

We completed a basic prototype of a request-respond mini-protocol that supports server-side message reordering while ensuring both deadlock and livelock freedom. The prototype was reviewed by the consensus and formal methods teams. Next development steps involve simplifying the API and evaluating specific modifications tailored for Leios. At this point, we consider the technical risk of this development direction to be addressed and are transitioning to other, higher-priority Leios tasks.

Mithril​

We're moving the development to a new repository: https://github.com/IntersectMBO/dmq-node

Ouroboros Network​

• Optimised connectivity for peers behind firewall: PR#5241 is being reviewed.
• Fixed ToJSON instance for DiffusionMode
• docs: fixed broken link: we'd like to thank Oleksandr88 for his open-source contribution.
• ChainSync Timeouts: work in progress
• Enforce max reconnection attempts: work in progress, Karl Knutsson (Cardano Foundation)
• mux: handling trailing bytes
• PeerSelection: fixed local root test failure

Cardano Node​

• networking improvements to new tracing system:
  • fail in genesis mode if the peer snapshot file is older than UseLedgerPeers in the topology file
  • improved ledger peer snapshot warning
  • mini-protocol tracers using Debug severity, rather than Info (as in the legacy tracing system)
  • code cleanup
• Removed PeerT tracer
• new tracing system: networking adjustments: Made the new tracing system behave more like the old one when tracing events from the following subsystems:
  • block-fetch,
  • connection manager,
  • refactored P2P module.