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cb9e0268a7
As requested by @shesek: it's weird to fail if they ask for the exact same thing (which is quite possible, since offers don't expire by default). And add a new "created" field so they can tell if they have an old one. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
119 lines
3.9 KiB
Groff
Generated
119 lines
3.9 KiB
Groff
Generated
.TH "LIGHTNING-OFFEROUT" "7" "" "" "lightning-offerout"
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.SH NAME
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lightning-offerout - Command for offering payments
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.SH SYNOPSIS
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\fB(WARNING: experimental-offers only)\fR
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\fBofferout\fR \fIamount\fR \fIdescription\fR [\fIvendor\fR] [\fIlabel\fR] [\fIabsolute_expiry\fR] [\fIrefund_for\fR]
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.SH DESCRIPTION
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The \fBofferout\fR RPC command creates an offer, which is a request to
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send an invoice for us to pay (technically, this is referred to as a
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\fBsend_invoice\fR offer to distinguish a normal \fBlightningd-offer\fR(7)
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offer)\. It automatically enables the accepting and payment of
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corresponding invoice message (we will only pay once, however!)\.
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Note that it creates two variants of the offer: a signed and an
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unsigned one (which is smaller)\. Wallets should accept both: the
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current specification allows either\.
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The \fIamount\fR parameter can be the string "any", which creates an offer
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that can be paid with any amount (e\.g\. a donation)\. Otherwise it can
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be a positive value in millisatoshi precision; it can be a whole
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number, or a whole number ending in \fImsat\fR or \fIsat\fR, or a number with
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three decimal places ending in \fIsat\fR, or a number with 1 to 11 decimal
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places ending in \fIbtc\fR\.
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The \fIdescription\fR is a short description of purpose of the offer,
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e\.g\. \fIwithdrawl from ATM\fR\. This value is encoded into the resulting offer and is
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viewable by anyone you expose this offer to\. It must be UTF-8, and
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cannot use \fI\u\fR JSON escape codes\.
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The \fIvendor\fR is another (optional) field exposed in the offer, and
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reflects who is issuing this offer (i\.e\. you) if appropriate\.
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The \fIlabel\fR field is an internal-use name for the offer, which can
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be any UTF-8 string\.
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The \fIabsolute_expiry\fR is optionally the time the offer is valid until,
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in seconds since the first day of 1970 UTC\. If not set, the offer
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remains valid (though it can be deactivated by the issuer of course)\.
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This is encoded in the offer\.
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\fIrefund_for\fR is a previous (paid) invoice of ours\. The
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payment_preimage of this is encoded in the offer, and redemption
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requires that the invoice we receive contains a valid signature using
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that previous \fBpayer_key\fR\.
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.SH RETURN VALUE
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On success, an object is returned, containing:
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.RS
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.IP \[bu]
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\fBoffer_id\fR (hex): the id of this offer (merkle hash of non-signature fields) (always 64 characters)
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.IP \[bu]
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\fBactive\fR (boolean): whether this will pay a matching incoming invoice (always \fItrue\fR)
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.IP \[bu]
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\fBsingle_use\fR (boolean): whether this expires as soon as it's paid out (always \fItrue\fR)
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.IP \[bu]
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\fBbolt12\fR (string): the bolt12 encoding of the offer
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.IP \[bu]
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\fBbolt12_unsigned\fR (string): the bolt12 encoding of the offer, without a signature
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.IP \[bu]
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\fBused\fR (boolean): True if an incoming invoice has been paid (always \fIfalse\fR)
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.IP \[bu]
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\fBcreated\fR (boolean): false if the offer already existed
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.IP \[bu]
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\fBlabel\fR (string, optional): the (optional) user-specified label
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.RE
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On failure, an error is returned and no offer is created\. If the
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lightning process fails before responding, the caller should use
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\fBlightning-listoffers\fR(7) to query whether this offer was created or
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not\.
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The following error codes may occur:
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.RS
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.IP \[bu]
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-1: Catchall nonspecific error\.
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.IP \[bu]
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1000: Offer with this offer_id already exists\.
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.RE
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.SH NOTES
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The specification allows quantity, recurrence and alternate currencies on
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offers which contain \fBsend_invoice\fR, but these are not implemented here\.
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We could also allow multi-use offers, but usually you're only offering to
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send money once\.
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.SH AUTHOR
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Rusty Russell \fI<rusty@rustcorp.com.au\fR> is mainly responsible\.
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.SH SEE ALSO
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\fBlightning-sendinvoice\fR(7), \fBlightning-offer\fR(7), \fBlightning-listoffers\fR(7), \fBlightning-disableoffer\fR(7)\.
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.SH RESOURCES
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Main web site: \fIhttps://github.com/ElementsProject/lightning\fR
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\" SHA256STAMP:4998ef3e06f37823c969a524fc3deb96b58eb2babee560df27e3f006fc535186
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