An implementation of a blockchain in Rust demonstrating the use of libp2p

TO DO:

• add persistence when finished

• add error handling if block fails to add to node

• consensus between nodes to prevent simultaneous node creation aka no two nodes #4 pointing to #3 for example, create "retry mechanism"

  • rudimentary consensus determines longest "most up to date chain from either local and remote and uses that"

• security layer between connecting nodes, currently client request and node response are broadcast through the entire network

  • update with libp2p point-to-point request/response model to improve performance...see libp2p docs request_response
  • refactor with gossipsub for more efficiency

Install locally

To run:

install rust and cargo

install nightly cargo for up to date dependencies

cd directory blocky-rust

~$: RUST_LOG=info cargo +nightly run

commands:

• ls p - list peer address
• ls c - list local chain
• create b $data - mines a block with data $data and adds it to chain

• Simple test:

open multiple terminal windows/tabs and switch between them updating and creating blocks and checking the persistence across each 'peer'