RemoveTower

RemoveTower removes a watchtower from being considered for future session negotiations and from being used for any subsequent backups until it's added again. If an address is provided, then this RPC only serves as a way of removing the address from the watchtower instead.

Source: wtclientrpc/wtclient.proto

gRPC

rpc RemoveTower (RemoveTowerRequest) returns (RemoveTowerResponse);

REST

HTTP Method	Path
DELETE	/v2/watchtower/client/{pubkey}

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', 'wtclientrpc/wtclient.proto'], loaderOptions);
const wtclientrpc = grpc.loadPackageDefinition(packageDefinition).wtclientrpc;
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 wtclientrpc.WatchtowerClient(GRPC_HOST, creds);
let request = {
  pubkey: <bytes>,
  address: <string>,
};
client.removeTower(request, function(err, response) {
  console.log(response);
});
// Console output:
//  {
//  }

Python

import codecs, grpc, os
# Generate the following 2 modules by compiling the wtclientrpc/wtclient.proto with the grpcio-tools.
# See https://github.com/lightningnetwork/lnd/blob/master/docs/grpc/python.md for instructions.
import wtclient_pb2 as wtclientrpc, wtclient_pb2_grpc as wtclientstub

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 = wtclientstub.WatchtowerClientStub(channel)
request = wtclientrpc.RemoveTowerRequest(
  pubkey=<bytes>,
  address=<string>,
)
response = stub.RemoveTower(request)
print(response)
# {
# }

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 options = {
  url: `https://${REST_HOST}/v2/watchtower/client/{pubkey}`,
  // Work-around for self-signed certificates.
  rejectUnauthorized: false,
  json: true,
  headers: {
    'Grpc-Metadata-macaroon': fs.readFileSync(MACAROON_PATH).toString('hex'),
  },
}
request.delete(options, function(error, response, body) {
  console.log(body);
});
// Console output:
//  {
//  }

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/watchtower/client/{pubkey}'
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
headers = {'Grpc-Metadata-macaroon': macaroon}
r = requests.delete(url, headers=headers, verify=TLS_PATH)
print(r.json())
# {
# }

Shell

$ lncli wtclient remove --help

NAME:
   lncli wtclient remove - Remove a watchtower to prevent its use for future sessions/backups.

USAGE:
   lncli wtclient remove pubkey | pubkey@address

DESCRIPTION:
   An optional address can be provided to remove, indicating that the watchtower is no longer reachable at this address. If an address isn't provided, then the watchtower will no longer be used for future sessions/backups.

Messages

wtclientrpc.RemoveTowerRequest

Source: wtclientrpc/wtclient.proto

Field	gRPC Type	REST Type	REST Placement
pubkey The identifying public key of the watchtower to remove.	bytes	string	path
address If set, then the record for this address will be removed, indicating that is is stale. Otherwise, the watchtower will no longer be used for future session negotiations and backups.	string	string	query

wtclientrpc.RemoveTowerResponse

Source: wtclientrpc/wtclient.proto

note

This response has no parameters.