RLPx

RLPx is a cryptographic peer-to-peer network and protocol suite which provides a general-purpose transport and interface for applications to communicate via a p2p network. RLPx is designed to meet the requirements of decentralized applications and is used by Ethereum.

The current version of RLPx provides a network layer for Ethereum.

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