dcrd v2.0.3 Release Notes

This is a patch release of dcrd which includes the following changes:

• Improved sender privacy for transactions and mix messages via randomized announcements
• Nodes now prefer to maintain at least three mixing-capable outbound connections
• Recent transactions and mix messages will now be available to serve for longer
• Reduced memory usage during periods of lower activity
• Mixing-related performance enhancements

Changelog

This patch release consists of 26 commits from 2 contributors which total to 37 files changed, 4527 additional lines of code, and 499 deleted lines of code.

All commits since the last release may be viewed on GitHub here.

Protocol and network:

• [release-v2.0] peer: Randomize inv batching delays (decred/dcrd#3390)
• [release-v2.0] server: Cache advertised txns (decred/dcrd#3392)
• [release-v2.0] server: Prefer 3 min mix capable outbound peers (decred/dcrd#3392)

Mixing message relay (mix pool):

• [release-v2.0] mixpool: Cache recently removed msgs (decred/dcrd#3391)
• [release-v2.0] mixclient: Introduce random message jitter (decred/dcrd#3391)
• [release-v2.0] netsync: Remove spent PRs from tip block txns (decred/dcrd#3392)

Documentation:

• [release-v2.0] docs: Update for container/lru module (decred/dcrd#3390)
• [release-v2.0] rand: Add README.md (decred/dcrd#3390)

Developer-related package and module changes:

• [release-v2.0] container/lru: Implement type safe generic LRUs (decred/dcrd#3390)
• [release-v2.0] peer: Use container/lru module (decred/dcrd#3390)
• [release-v2.0] crypto/rand: Implement module (decred/dcrd#3390)
• [release-v2.0] rand: Add BigInt (decred/dcrd#3390)
• [release-v2.0] rand: Uppercase N in half-open-range funcs (decred/dcrd#3390)
• [release-v2.0] rand: Add rand.N generic func (decred/dcrd#3390)
• [release-v2.0] rand: Add ShuffleSlice (decred/dcrd#3390)
• [release-v2.0] rand: Add benchmarks (decred/dcrd#3390)
• [release-v2.0] peer: Use new crypto/rand module (decred/dcrd#3390)
• [release-v2.0] mixing: Prealloc buffers (decred/dcrd#3391)
• [release-v2.0] mixpool: Remove Receive expectedMessages argument (decred/dcrd#3391)
• [release-v2.0] mixing: Use new crypto/rand module (decred/dcrd#3391)
• [release-v2.0] mixpool: Remove run from conflicting msg err (decred/dcrd#3391)
• [release-v2.0] mixpool: Remove more references to runs (decred/dcrd#3391)
• [release-v2.0] mixing: Reduce slot reservation mix pads allocs (decred/dcrd#3391)

Developer-related module management:

• [release-v2.0] main: Use backported peer updates (decred/dcrd#3390)
• [release-v2.0] main: Use backported mixing updates (decred/dcrd#3391)

Misc:

• [release-v2.0] release: Bump for 2.0.3 (decred/dcrd#3393)

Code Contributors (alphabetical order):

• Dave Collins
• Josh Rickmar