Module p2p_frame 

Bitcoin P2P message framing: magic, 12-byte command, LE length, 4-byte checksum, payload.

Shared between crates so crate::p2p_framing::MAX_PROTOCOL_MESSAGE_LENGTH and checksum rules stay single-sourced.

Functions

bitcoin_p2p_payload_checksum

First four bytes of double-SHA256(payload), Bitcoin P2P checksum.

build_p2p_frame

Build a full P2P frame: magic + command (null-padded) + length + checksum + payload.

parse_p2p_frame

Parse the 24-byte header and verify checksum; returns command name and payload slice.