Bitcoin handshake

A toy project that can connect to a Bitcoin node, send a ping and check for the received pong message.

No bitcoin crate have been used, the main dependencies are:

• tokio - async tcp networking
• nom - binary parsing (encode & decode Bitcoin message)
• bitflags - C bit flags handling

Architecture

• bitcoin_node: bin
  • can connect to a Bitcoin node + ping/pong exchange
• bth_network: lib
  • Implement tokio_codec to send/receive message
  • use bth_message
• bth_message: lib
  • Bitcoin message (and other Bitcoin object) serialization & deserialization

Protocol

Handshake description:

• https://en.bitcoin.it/wiki/Protocol_documentation
• https://en.bitcoin.it/wiki/Version_Handshake

Run

• RUST_LOG=debug cargo run -- --ip 127.0.0.1 --port 8333
• RUST_LOG=debug cargo run -- --ip 188.215.62.122 -p 8333

Find bitcoin node ip address:

• https://bitnodes.io/

Unit tests

• cargo test