* client/beefy: create communication module and move gossip there * client/beefy: move beefy_protocol_name module to communication * client/beefy: move notification module under communication * client/beefy: add incoming request_response protocol handler * client/beefy: keep track of connected peers and their progress * client/beefy: add logic for generating Justif requests * client/beefy: cancel outdated on-demand justification requests * try Andre's suggestion for JustificationEngine * justif engine add justifs validation * client/beefy: impl OnDemandJustificationsEngine async next() * move beefy proto name test * client/beefy: initialize OnDemandJustificationsEngine * client/tests: allow for custom req-resp protocols * client/beefy: on-demand-justif: implement simple peer selection strategy * client/beefy: fix voter initialization Fix corner case where voter gets a single burst of finality notifications just when it starts. The notification stream was consumed by "wait_for_pallet" logic, then main loop would subscribe to finality notifications, but by that time some notifications might've been lost. Fix this by subscribing the main loop to notifications before waiting for pallet to become available. Share the same stream with the main loop so that notifications for blocks before pallet available are ignored, while _all_ notifications after pallet available are processed. Add regression test for this. Signed-off-by: acatangiu <adrian@parity.io> * client/beefy: make sure justif requests are always out for mandatory blocks * client/beefy: add test for on-demand justifications sync * client/beefy: tweak main loop event processing order * client/beefy: run on-demand-justif-handler under same async task as voter * client/beefy: add test for known-peers * client/beefy: reorg request-response module * client/beefy: add issue references for future work todos * client/beefy: consolidate on-demand-justifications engine state machine Signed-off-by: acatangiu <adrian@parity.io> * client/beefy: fix for polkadot companion * client/beefy: implement review suggestions * cargo fmt and clippy * fix merge damage * fix rust-doc * fix merge damage * fix merge damage * client/beefy: add test for justif proto name Signed-off-by: acatangiu <adrian@parity.io>
Substrate ·

Substrate is a next-generation framework for blockchain innovation 🚀.
Getting Started
Head to docs.substrate.io and follow the installation instructions. Then try out one of the tutorials.
Community & Support
Join the highly active and supportive community on the Susbstrate Stack Exchange to ask questions about use and problems you run into using this software. Please do report bugs and isssues here for anything you suspect requires action in the source.
Contributions & Code of Conduct
Please follow the contributions guidelines as outlined in docs/CONTRIBUTING.adoc.
In all communications and contributions, this project follows the Contributor Covenant Code of Conduct.
Security
The security policy and procedures can be found in docs/SECURITY.md.
License
- Substrate Primitives (
sp-*), Frame (frame-*) and the pallets (pallets-*), binaries (/bin) and all other utilities are licensed under Apache 2.0. - Substrate Client (
/client/*/sc-*) is licensed under GPL v3.0 with a classpath linking exception.
The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.
In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.
