Module p2p_framing 

Bitcoin P2P framing constants: magic bytes, max message size, and common count limits.

Constants

BITCOIN_MAGIC_MAINNET

Mainnet P2P magic (first four bytes of each message on the wire).

BITCOIN_MAGIC_REGTEST

Regtest magic.

BITCOIN_MAGIC_TESTNET

Testnet magic.

BITCOIN_P2P_MAGIC_MAINNET_LE

Mainnet magic as u32 (little-endian), for comparison with u32::from_le_bytes on the header.

MAX_ADDR_TO_SEND

Maximum addresses in an addr message (MAX_ADDR_TO_SEND).

MAX_HEADERS_RESULTS

Maximum headers in a headers message (MAX_HEADERS_RESULTS).

MAX_INV_SZ

Maximum inventory entries in inv / getdata (MAX_INV_SZ).

MAX_PROTOCOL_MESSAGE_LENGTH

Maximum P2P message size including 24-byte header (32 MiB payload cap in practice).