AddHoldInvoice

AddHoldInvoice creates a hold invoice. It ties the invoice to the hash supplied in the request.

Source: invoicesrpc/invoices.proto

gRPC

rpc AddHoldInvoice (AddHoldInvoiceRequest) returns (AddHoldInvoiceResp);

REST

HTTP Method	Path
POST	/v2/invoices/hodl

Code Samples

gRPC

Javascript

const fs = require('fs');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');

const GRPC_HOST = 'localhost:10009'
const MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'
const TLS_PATH = 'LND_DIR/tls.cert'

const loaderOptions = {
  keepCase: true,
  longs: String,
  enums: String,
  defaults: true,
  oneofs: true,
};
const packageDefinition = protoLoader.loadSync(['lightning.proto', 'invoicesrpc/invoices.proto'], loaderOptions);
const invoicesrpc = grpc.loadPackageDefinition(packageDefinition).invoicesrpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
const tlsCert = fs.readFileSync(TLS_PATH);
const sslCreds = grpc.credentials.createSsl(tlsCert);
const macaroon = fs.readFileSync(MACAROON_PATH).toString('hex');
const macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
  let metadata = new grpc.Metadata();
  metadata.add('macaroon', macaroon);
  callback(null, metadata);
});
let creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
let client = new invoicesrpc.Invoices(GRPC_HOST, creds);
let request = {
  memo: <string>,
  hash: <bytes>,
  value: <int64>,
  value_msat: <int64>,
  description_hash: <bytes>,
  expiry: <int64>,
  fallback_addr: <string>,
  cltv_expiry: <uint64>,
  route_hints: <RouteHint>,
  private: <bool>,
};
client.addHoldInvoice(request, function(err, response) {
  console.log(response);
});
// Console output:
//  {
//    "payment_request": <string>,
//    "add_index": <uint64>,
//    "payment_addr": <bytes>,
//  }

Python

import codecs, grpc, os
# Generate the following 2 modules by compiling the invoicesrpc/invoices.proto with the grpcio-tools.
# See https://github.com/lightningnetwork/lnd/blob/master/docs/grpc/python.md for instructions.
import invoices_pb2 as invoicesrpc, invoices_pb2_grpc as invoicesstub

GRPC_HOST = 'localhost:10009'
MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'
TLS_PATH = 'LND_DIR/tls.cert'

# create macaroon credentials
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
def metadata_callback(context, callback):
  callback([('macaroon', macaroon)], None)
auth_creds = grpc.metadata_call_credentials(metadata_callback)
# create SSL credentials
os.environ['GRPC_SSL_CIPHER_SUITES'] = 'HIGH+ECDSA'
cert = open(TLS_PATH, 'rb').read()
ssl_creds = grpc.ssl_channel_credentials(cert)
# combine macaroon and SSL credentials
combined_creds = grpc.composite_channel_credentials(ssl_creds, auth_creds)
# make the request
channel = grpc.secure_channel(GRPC_HOST, combined_creds)
stub = invoicesstub.InvoicesStub(channel)
request = invoicesrpc.AddHoldInvoiceRequest(
  memo=<string>,
  hash=<bytes>,
  value=<int64>,
  value_msat=<int64>,
  description_hash=<bytes>,
  expiry=<int64>,
  fallback_addr=<string>,
  cltv_expiry=<uint64>,
  route_hints=<RouteHint>,
  private=<bool>,
)
response = stub.AddHoldInvoice(request)
print(response)
# {
#    "payment_request": <string>,
#    "add_index": <uint64>,
#    "payment_addr": <bytes>,
# }

REST

Javascript

const fs = require('fs');
const request = require('request');

const REST_HOST = 'localhost:8080'
const MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'

let requestBody = {
  memo: <string>, // <string> 
  hash: <string>, // <bytes> (base64 encoded)
  value: <string>, // <int64> 
  value_msat: <string>, // <int64> 
  description_hash: <string>, // <bytes> (base64 encoded)
  expiry: <string>, // <int64> 
  fallback_addr: <string>, // <string> 
  cltv_expiry: <string>, // <uint64> 
  route_hints: <array>, // <RouteHint> 
  private: <boolean>, // <bool> 
};
let options = {
  url: `https://${REST_HOST}/v2/invoices/hodl`,
  // Work-around for self-signed certificates.
  rejectUnauthorized: false,
  json: true,
  headers: {
    'Grpc-Metadata-macaroon': fs.readFileSync(MACAROON_PATH).toString('hex'),
  },
  form: JSON.stringify(requestBody),
}
request.post(options, function(error, response, body) {
  console.log(body);
});
// Console output:
//  {
//    "payment_request": <string>, // <string> 
//    "add_index": <string>, // <uint64> 
//    "payment_addr": <string>, // <bytes> 
//  }

Python

import base64, codecs, json, requests

REST_HOST = 'localhost:8080'
MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'
TLS_PATH = 'LND_DIR/tls.cert'

url = f'https://{REST_HOST}/v2/invoices/hodl'
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
headers = {'Grpc-Metadata-macaroon': macaroon}
data = {
  'memo': <string>,
  'hash': base64.b64encode(<bytes>),
  'value': <int64>,
  'value_msat': <int64>,
  'description_hash': base64.b64encode(<bytes>),
  'expiry': <int64>,
  'fallback_addr': <string>,
  'cltv_expiry': <uint64>,
  'route_hints': <RouteHint>,
  'private': <bool>,
}
r = requests.post(url, headers=headers, data=json.dumps(data), verify=TLS_PATH)
print(r.json())
# {
#    "payment_request": <string>,
#    "add_index": <uint64>,
#    "payment_addr": <bytes>,
# }

Shell

# There is no CLI command for this RPC

Messages

invoicesrpc.AddHoldInvoiceRequest

Source: invoicesrpc/invoices.proto

Field	gRPC Type	REST Type	REST Placement
memo An optional memo to attach along with the invoice. Used for record keeping purposes for the invoice's creator, and will also be set in the description field of the encoded payment request if the description_hash field is not being used.	string	string	body
hash The hash of the preimage	bytes	string	body
value The value of this invoice in satoshis The fields value and value_msat are mutually exclusive.	int64	string	body
value_msat The value of this invoice in millisatoshis The fields value and value_msat are mutually exclusive.	int64	string	body
description_hash Hash (SHA-256) of a description of the payment. Used if the description of payment (memo) is too long to naturally fit within the description field of an encoded payment request.	bytes	string	body
expiry Payment request expiry time in seconds. Default is 3600 (1 hour).	int64	string	body
fallback_addr Fallback on-chain address.	string	string	body
cltv_expiry Delta to use for the time-lock of the CLTV extended to the final hop.	uint64	string	body
route_hints Route hints that can each be individually used to assist in reaching the invoice's destination.	RouteHint[]	array	body
private Whether this invoice should include routing hints for private channels.	bool	boolean	body

invoicesrpc.AddHoldInvoiceResp

Source: invoicesrpc/invoices.proto

Field	gRPC Type	REST Type
payment_request A bare-bones invoice for a payment within the Lightning Network. With the details of the invoice, the sender has all the data necessary to send a payment to the recipient.	string	string
add_index The "add" index of this invoice. Each newly created invoice will increment this index making it monotonically increasing. Callers to the SubscribeInvoices call can use this to instantly get notified of all added invoices with an add_index greater than this one.	uint64	string
payment_addr The payment address of the generated invoice. This value should be used in all payments for this invoice as we require it for end to end security.	bytes	string

Nested Messages

lnrpc.RouteHint

Field	gRPC Type	REST Type
hop_hints A list of hop hints that when chained together can assist in reaching a specific destination.	HopHint[]	array

lnrpc.HopHint

Field	gRPC Type	REST Type
node_id The public key of the node at the start of the channel.	string	string
chan_id The unique identifier of the channel.	uint64	string
fee_base_msat The base fee of the channel denominated in millisatoshis.	uint32	integer
fee_proportional_millionths The fee rate of the channel for sending one satoshi across it denominated in millionths of a satoshi.	uint32	integer
cltv_expiry_delta The time-lock delta of the channel.	uint32	integer