Issue

Key points and detail design of next Darwinia Ethereum-chains message protocol · Issue #753 · darwinia-network/darwinia

Design

parity-bridges-common/README.md at main · darwinia-network/parity-bridges-common

Modification: pallet → smart contract (DVM)

Relevant code

darwinia-bridge-sol/contracts/bridge/contracts/common at message-protocol-v2 · darwinia-network/darwinia-bridge-sol

Notes

• Message lane is an unidirectional channel
• a single instance of messages module supports both outbound lanes and inbound lanes
• Messages module supports multiple message lanes

Summary

Specification of Message Protocol

Accommodate substrate-to-substrate message pallet to address the following three problems

• MMR proof is needed
• Confirmation is not supported
• Message model is specific

Components and Interaction with other Actors

• A set of smart contracts, the functionality of each one
• A sequence diagrams or a flow chart to describe the delivery process of messages
• Interface with apps and relayer

Engineering trade-off