Module dlc_manager::channel_updater

This module contains static functions to update the state of a DLC channel.

Functions

accept_channel_offer

Move the given OfferedChannel and OfferedContract to an AcceptedChannel and AcceptedContract, returning them as well as the AcceptChannel message to be sent to the counter party.

accept_channel_renewal

Creates a RenewAccept message from the given SignedChannel and other parameters, updating the state of the channel and the associated contract the same time. Expects the channel to be in SignedChannelState::RenewOffered state.

accept_collaborative_close_offer

Accept an offer to collaboratively close the channel, signing the closing transaction and returning it.

close_settled_channel

Sign the settlement transaction and update the state of the channel.

initiate_unilateral_close_established_channel

Sign the buffer transaction and closing CET and update the state of the channel.

offer_channel

Creates an OfferedChannel and an associated OfferedContract using the given parameter.

offer_collaborative_close

Creates a CollaborativeCloseOffer message and update the state of the given SignedChannel.

on_collaborative_close_offer

Validates the given CollaborativeCloseOffer and updates the state of the channel.

on_reject

Update the state of the channel if currently in a state that can be rejected.

on_renew_offer

Update the state of the given SignedChannel from the given RenewOffer. Expects the channel to be in one of SignedChannelState::Settled or SignedChannelState::Established state.

on_settle_offer

Updates the state of the given SignedChannel using the given SettleOffer message.

reject_renew_offer

Creates a Reject message and rolls back the state of the channel. Expects the channel to be in SignedChannelState::RenewOffered state and the local party not to be the offer party.

reject_settle_offer

Creates a Reject message and rolls back the state of the channel. Expects the channel to be in SignedChannelState::SettledOffered state.

renew_channel_on_finalize

Verify the given RenewFinalize and update the state of the channel.

renew_offer

Creates a RenewOffer message and OfferedContract for the given channel using the provided parameters.

settle_channel_accept

Creates a SettleAccept message from the given SignedChannel and other parameters, updating the state of the channel at the same time. Expects the channel to be in SignedChannelState::SettledReceived state.

settle_channel_confirm

Creates a SettleConfirm message from the given SignedChannel and SettleAccept message, verifying the content of the message and updating the state of the channel at the same time. Expects the channel to be in SignedChannelState::SettledOffered state.

settle_channel_finalize

Creates a SettleFinalize message from the given SignedChannel and SettleConfirm message, validating the message and updating the state of the channel at the same time. Expects the channel to be in SignedChannelState::SettledAccepted state.

settle_channel_offer

Creates a SettleOffer message from the given SignedChannel and parameters, updating the state of the channel at the same time. Expects the channel to be in SignedChannelState::Established state.

settle_channel_on_finalize

Checks that the SettleFinalize message is valid with respect to the given channel and updates the state of the channel. Expects the channel to be in SignedChannelState::SettledConfirmed state.

verify_and_sign_accepted_channel

Verify that the AcceptChannel message is valid with respect to the given OfferedChannel and OfferedContract, transforming them to a SignedChannel and SignedContract, returning them as well as the SignChannel to be sent to the counter party.

verify_renew_accept_and_confirm

Creates a RenewConfirm message from the given SignedChannel and RenewAccept message, verifying the message and updating the state of the channel and associated contract the same time. Expects the channel to be in SignedChannelState::RenewOffered state.

verify_renew_confirm_and_finalize

Creates a RenewFinalize message from the given SignedChannel and RenewAccept message, verifying the message and updating the state of the channel and associated contract the same time. Expects the channel to be in SignedChannelState::RenewAccepted state.

verify_signed_channel

Verify that the given SignChannel message is valid with respect to the given AcceptedChannel and AcceptedContract, transforming them to a SignedChannel and SignedContract, and returning them.