Struct breez_sdk_liquid::lightning::offers::refund::Refund

pub struct Refund { /* private fields */ }

Expand description

A Refund is a request to send an Bolt12Invoice without a preceding Offer.

Typically, after an invoice is paid, the recipient may publish a refund allowing the sender to recoup their funds. A refund may be used more generally as an “offer for money”, such as with a bitcoin ATM.

Implementations§

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impl Refund

pub fn description(&self) -> PrintableString<'_>

A complete description of the purpose of the refund. Intended to be displayed to the user but with the caveat that it has not been verified in any way.

pub fn absolute_expiry(&self) -> Option<Duration>

Duration since the Unix epoch when an invoice should no longer be sent.

If None, the refund does not expire.

pub fn is_expired(&self) -> bool

Whether the refund has expired.

pub fn issuer(&self) -> Option<PrintableString<'_>>

The issuer of the refund, possibly beginning with user@domain or domain. Intended to be displayed to the user but with the caveat that it has not been verified in any way.

pub fn paths(&self) -> &[BlindedPath]

Paths to the sender originating from publicly reachable nodes. Blinded paths provide sender privacy by obfuscating its node id.

pub fn payer_metadata(&self) -> &[u8] ⓘ

An unpredictable series of bytes, typically containing information about the derivation of payer_id.

pub fn chain(&self) -> ChainHash

A chain that the refund is valid for.

pub fn amount_msats(&self) -> u64

The amount to refund in msats (i.e., the minimum lightning-payable unit for chain).

pub fn features(&self) -> &Features<InvoiceRequestContext>

Features pertaining to requesting an invoice.

pub fn quantity(&self) -> Option<u64>

The quantity of an item that refund is for.

pub fn payer_id(&self) -> PublicKey

A public node id to send to in the case where there are no paths. Otherwise, a possibly transient pubkey.

pub fn payer_note(&self) -> Option<PrintableString<'_>>

Payer provided note to include in the invoice.

pub fn respond_with( &self, payment_paths: Vec<(BlindedPayInfo, BlindedPath)>, payment_hash: PaymentHash, signing_pubkey: PublicKey, ) -> Result<InvoiceBuilder<'_, ExplicitSigningPubkey>, Bolt12SemanticError>

Creates an InvoiceBuilder for the refund with the given required fields and using the Duration since std::time::SystemTime::UNIX_EPOCH as the creation time.

See Refund::respond_with_no_std for further details where the aforementioned creation time is used for the created_at parameter.

This is not exported to bindings users as builder patterns don’t map outside of move semantics.

pub fn respond_with_no_std( &self, payment_paths: Vec<(BlindedPayInfo, BlindedPath)>, payment_hash: PaymentHash, signing_pubkey: PublicKey, created_at: Duration, ) -> Result<InvoiceBuilder<'_, ExplicitSigningPubkey>, Bolt12SemanticError>

Creates an InvoiceBuilder for the refund with the given required fields.

Unless InvoiceBuilder::relative_expiry is set, the invoice will expire two hours after created_at, which is used to set Bolt12Invoice::created_at. Useful for no-std builds where std::time::SystemTime is not available.

The caller is expected to remember the preimage of payment_hash in order to claim a payment for the invoice.

The signing_pubkey is required to sign the invoice since refunds are not in response to an offer, which does have a signing_pubkey.

The payment_paths parameter is useful for maintaining the payment recipient’s privacy. It must contain one or more elements ordered from most-preferred to least-preferred, if there’s a preference. Note, however, that any privacy is lost if a public node id is used for signing_pubkey.

Errors if the request contains unknown required features.

This is not exported to bindings users as builder patterns don’t map outside of move semantics.