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Bitcoin Cash Specification
Request: Send Compact Blocks (“sendcmpct”)
This message notifies the peer that this node support Compact Block Relay.
Node should only send this message after protocol version >= 70014.
This message can indicate the High Bandwidth Relaying mode or Low Bandwidth Relaying mode by setting the Mode field.
Upon receipt of this message from the peer, node should announce new block via cmpctblock message if Mode = 1, or node should announce new block via inv or header message as defined in BIP-0130.
Format
| Field | Length | Format | Description |
|---|---|---|---|
| Mode | 1 byte | Integer | 1: High Bandwidth Relaying mode; 0: Low Bandwidth Relaying mode; Other: Invalid |
| Version | 8 bytes | Integer (LE) | Must set to 1, otherwise invalid. |