pydevp2p¶

Python implementation of the Ethereum P2P stack

Free software: BSD license
Documentation: https://pydevp2p.readthedocs.org.

Introduction¶

pydevp2p is the Python implementation of the RLPx network layer. RLPx provides a general-purpose transport and interface for applications to communicate via a p2p network. The first version is geared towards building a robust transport, well-formed network, and software interface in order to provide infrastructure which meets the requirements of distributed or decentralized applications such as Ethereum. Encryption is employed to provide better privacy and integrity than would be provided by a cleartext implementation.

RLPx underpins the DEVp2p interface:

https://github.com/ethereum/wiki/wiki/ÐΞVp2p-Wire-Protocol
https://github.com/ethereum/wiki/wiki/libp2p-Whitepaper

Full spec:

https://github.com/ethereum/devp2p/blob/master/rlpx.md

Features¶

Node Discovery and Network Formation
Peer Preference Strategies
Peer Reputation
Multiple protocols
Encrypted handshake
Encrypted transport
Dynamically framed transport
Fair queuing

Security Overview¶

nodes have access to a uniform network topology
peers can uniformly connect to network
network robustness >= kademlia
protocols sharing a connection are provided uniform bandwidth
authenticated connectivity
authenticated discovery protocol
encrypted transport (TCP now; UDP in future)
robust node discovery