Network Team Update

High-level overview of sprint 54

In this sprint, we merged the bootstrap peers (aka weak genesis) changes to the ouroboros-network repository (ouroboros-network#4615). We continued working on integration & testing it using an early development version of cardano-node (cardano-node#5485).

Andrew Westberg (DripDropz) noticed and fixed a mistake in the cddl spec which resulted in misleading documentation; ouroboros-network#4790. The Handshake protocol flag should be called initiatorOnlyDiffusionMode. Library authors providing connectivity with other nodes via the node-to-node protocol are advised to review their implementation.

We continued working on the tx-submission decision logic; ouroboros-network#3311.

Karl Knutsson (CF) implemented:

• a debugging feature which dumps outbound governor state on the SIGUSR1 event (supported on POSIX compatible OSes); ouroboros-network#4730, ouroboros-network#4789.
• limited the rate at which one can discover nodes through peer sharing; ouroboros-network#4778.

Open Source Contributions

IOSim

We released a new version of io-sim to Hackage:

• Sebastian Nagel (IOG) fixed a bug in the flushTQueue implementation; io-sim#135
• We fixed the underflow error in threadDelay in the si-timers library (io-sim#129) reported by Nick Frisby (Tweag)

NoThunks

We released a new version of nothunks to Hackage:

• wherefrom support; nothunks#46
• added Solo instance; nothunks#45
• added instances for Monoid and Semigroup newtype wrappers; nothunks#43

Low-level summary

• We started using the ImportQualifiedPost extension, hence a large (autogenerated) syntax change; ouroboros-network#4715.
• Code cleanup; ouroboros-network#4792