Overview of sprint 114.
Summary
Leios
The TxSubmission v2 demo was merged, providing an end-to-end
demonstration of TxSubmission V2. A benchmark study of incremental
vs. non-incremental CBOR block decoding shows that decoding blocks
incrementally yields modest improvements for standard Praos blocks, and larger
gains for multi-megabyte blocks — directly relevant to Leios where block sizes
may grow substantially. Cardano-base was bumped to include support
for Leios voting. A simple TCP congestion-window model was
added to the Leios Rust simulator (sim-rs), porting the model from the
Haskell simulator; mini-protocol multiplexing remains a gap to be addressed.
An alternative TxSubmission V2 design without a central decision thread
is under review, superseding the earlier exploration.
Ouroboros-Network
bracketFetchClient and bracketKeepAlive were decoupled by
splitting FetchClientRegistry into KeepAliveRegistry and
FetchClientRegistry — a prerequisite for DMQ-Node integration.
Contra-tracer was upgraded to 0.2.1, unblocking the removal of
iohk-monitoring-framework from cardano-node 11.1. The peer-selection
governance target was renamed from selectEnvTargets to
selectGovTargets. Various tracing and API improvements
were merged as part of ongoing DMQ-Node integration work. A new protocol
version NodeToClientV_24 for the ValidateTx local-state-query
is under review.
DMQ-Node
Version 0.5.0.0 was released. The announcyness metric for peer
selection was merged: it scores peers by how often they are first to
announce a valid signature, with scores kept for one hour matching the churn
rate. SigId validation was improved: CBOR encoding was corrected to
use Hash Blake2b_256 for the sigId field, and SigExpired failures are now
restricted to the ZeroSetSnapshot case. An ouroboros-network integration
update is in review. Work on connecting the DMQ kernel to
cardano-node continues, blocked on pr#58.
IO-Sim and TypedProtocols
io-sim and typed-protocols repositories were moved to IntersectMBO
organisation on GitHub.
Leios
Ouroboros-Network
DMQ-Node
IOSim
Typed Protocols
