ddk-messages

Data structures and serialization for peer-to-peer communication in the Discreet Log Contract (DLC) protocol.

This crate implements the DLC specification message formats with Lightning-compatible serialization and automatic message segmentation for large messages.

Contract Messages

Message	Description
`OfferDlc`	Initial contract offer with funding details and payouts
`AcceptDlc`	Contract acceptance with adaptor signatures
`SignDlc`	Final contract signatures
`CloseDlc`	Contract close message

Oracle Messages

Type	Description
`OracleAnnouncement`	Signed announcement of an oracle event
`OracleAttestation`	Oracle's signed attestation to an outcome
`OracleEvent`	Event details (nonces, maturity, descriptor)

Channel Messages

Message	Description
`OfferChannel` / `AcceptChannel` / `SignChannel`	Channel setup
`SettleOffer` / `SettleAccept` / `SettleConfirm`	Settlement flow
`RenewOffer` / `RenewAccept` / `RenewConfirm`	Contract renewal
`CollaborativeCloseOffer`	Collaborative close
`Reject`	Reject a received offer

Message Handler

The MessageHandler implements LDK's CustomMessageHandler for integration with Lightning peer messaging:

use ddk_messages::message_handler::MessageHandler;

let handler = MessageHandler::new();

// Send a message
handler.send_message(counterparty_pubkey, Message::Offer(offer));

// Get received messages
let messages = handler.get_and_clear_received_messages();

Features

Feature	Description
`std`	Standard library support (default)
`no-std`	No standard library support
`use-serde`	Serde serialization for all message types

License

This project is licensed under the MIT License.