mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-12-27 05:49:21 +00:00
719 lines
21 KiB
Dart
719 lines
21 KiB
Dart
import 'dart:convert';
|
||
import 'dart:io';
|
||
|
||
import 'package:connectivity_plus/connectivity_plus.dart';
|
||
import 'package:decimal/decimal.dart';
|
||
import 'package:stackwallet/electrumx_rpc/rpc.dart';
|
||
import 'package:stackwallet/utilities/logger.dart';
|
||
import 'package:stackwallet/utilities/prefs.dart';
|
||
import 'package:uuid/uuid.dart';
|
||
|
||
class WifiOnlyException implements Exception {}
|
||
|
||
class ElectrumXNode {
|
||
ElectrumXNode({
|
||
required this.address,
|
||
required this.port,
|
||
required this.name,
|
||
required this.id,
|
||
required this.useSSL,
|
||
});
|
||
final String address;
|
||
final int port;
|
||
final String name;
|
||
final String id;
|
||
final bool useSSL;
|
||
|
||
factory ElectrumXNode.from(ElectrumXNode node) {
|
||
return ElectrumXNode(
|
||
address: node.address,
|
||
port: node.port,
|
||
name: node.name,
|
||
id: node.id,
|
||
useSSL: node.useSSL,
|
||
);
|
||
}
|
||
|
||
@override
|
||
String toString() {
|
||
return "ElectrumXNode: {address: $address, port: $port, name: $name, useSSL: $useSSL}";
|
||
}
|
||
}
|
||
|
||
class ElectrumX {
|
||
String get host => _host;
|
||
late String _host;
|
||
|
||
int get port => _port;
|
||
late int _port;
|
||
|
||
bool get useSSL => _useSSL;
|
||
late bool _useSSL;
|
||
|
||
JsonRPC? get rpcClient => _rpcClient;
|
||
JsonRPC? _rpcClient;
|
||
|
||
late Prefs _prefs;
|
||
|
||
List<ElectrumXNode>? failovers;
|
||
int currentFailoverIndex = -1;
|
||
|
||
ElectrumX(
|
||
{required String host,
|
||
required int port,
|
||
required bool useSSL,
|
||
required Prefs prefs,
|
||
required List<ElectrumXNode> failovers,
|
||
JsonRPC? client}) {
|
||
_prefs = prefs;
|
||
_host = host;
|
||
_port = port;
|
||
_useSSL = useSSL;
|
||
_rpcClient = client;
|
||
}
|
||
|
||
factory ElectrumX.from({
|
||
required ElectrumXNode node,
|
||
required Prefs prefs,
|
||
required List<ElectrumXNode> failovers,
|
||
}) =>
|
||
ElectrumX(
|
||
host: node.address,
|
||
port: node.port,
|
||
useSSL: node.useSSL,
|
||
prefs: prefs,
|
||
failovers: failovers,
|
||
);
|
||
|
||
Future<bool> _allow() async {
|
||
if (_prefs.wifiOnly) {
|
||
return (await Connectivity().checkConnectivity()) ==
|
||
ConnectivityResult.wifi;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/// Send raw rpc command
|
||
Future<dynamic> request({
|
||
required String command,
|
||
List<dynamic> args = const [],
|
||
Duration connectionTimeout = const Duration(seconds: 60),
|
||
String? requestID,
|
||
int retries = 2,
|
||
}) async {
|
||
if (!(await _allow())) {
|
||
throw WifiOnlyException();
|
||
}
|
||
|
||
if (currentFailoverIndex == -1) {
|
||
_rpcClient ??= JsonRPC(
|
||
host: host,
|
||
port: port,
|
||
useSSL: useSSL,
|
||
connectionTimeout: connectionTimeout,
|
||
);
|
||
} else {
|
||
_rpcClient = JsonRPC(
|
||
host: failovers![currentFailoverIndex].address,
|
||
port: failovers![currentFailoverIndex].port,
|
||
useSSL: failovers![currentFailoverIndex].useSSL,
|
||
connectionTimeout: connectionTimeout,
|
||
);
|
||
}
|
||
|
||
try {
|
||
final requestId = requestID ?? const Uuid().v1();
|
||
final jsonArgs = json.encode(args);
|
||
final jsonRequestString =
|
||
'{"jsonrpc": "2.0", "id": "$requestId","method": "$command","params": $jsonArgs}';
|
||
|
||
// Logging.instance.log("ElectrumX jsonRequestString: $jsonRequestString");
|
||
|
||
final response = await _rpcClient!.request(jsonRequestString);
|
||
|
||
if (response["error"] != null) {
|
||
throw Exception("JSONRPC response error: $response");
|
||
}
|
||
|
||
currentFailoverIndex = -1;
|
||
return response;
|
||
} on WifiOnlyException {
|
||
rethrow;
|
||
} on SocketException {
|
||
// likely timed out so then retry
|
||
if (retries > 0) {
|
||
return request(
|
||
command: command,
|
||
args: args,
|
||
connectionTimeout: connectionTimeout,
|
||
requestID: requestID,
|
||
retries: retries - 1,
|
||
);
|
||
} else {
|
||
rethrow;
|
||
}
|
||
} catch (e) {
|
||
if (failovers != null && currentFailoverIndex < failovers!.length - 1) {
|
||
currentFailoverIndex++;
|
||
return request(
|
||
command: command,
|
||
args: args,
|
||
connectionTimeout: connectionTimeout,
|
||
requestID: requestID,
|
||
);
|
||
} else {
|
||
currentFailoverIndex = -1;
|
||
rethrow;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// send a batch request with [command] where [args] is a
|
||
/// map of <request id string : arguments list>
|
||
///
|
||
/// returns a list of json response objects if no errors were found
|
||
Future<List<Map<String, dynamic>>> batchRequest({
|
||
required String command,
|
||
required Map<String, List<dynamic>> args,
|
||
Duration connectionTimeout = const Duration(seconds: 60),
|
||
int retries = 2,
|
||
}) async {
|
||
if (!(await _allow())) {
|
||
throw WifiOnlyException();
|
||
}
|
||
|
||
if (currentFailoverIndex == -1) {
|
||
_rpcClient ??= JsonRPC(
|
||
host: host,
|
||
port: port,
|
||
useSSL: useSSL,
|
||
connectionTimeout: connectionTimeout,
|
||
);
|
||
} else {
|
||
_rpcClient = JsonRPC(
|
||
host: failovers![currentFailoverIndex].address,
|
||
port: failovers![currentFailoverIndex].port,
|
||
useSSL: failovers![currentFailoverIndex].useSSL,
|
||
connectionTimeout: connectionTimeout,
|
||
);
|
||
}
|
||
|
||
try {
|
||
final List<String> requestStrings = [];
|
||
|
||
for (final entry in args.entries) {
|
||
final jsonArgs = json.encode(entry.value);
|
||
requestStrings.add(
|
||
'{"jsonrpc": "2.0", "id": "${entry.key}","method": "$command","params": $jsonArgs}');
|
||
}
|
||
|
||
// combine request strings into json array
|
||
String request = "[";
|
||
for (int i = 0; i < requestStrings.length - 1; i++) {
|
||
request += "${requestStrings[i]},";
|
||
}
|
||
request += "${requestStrings.last}]";
|
||
|
||
// Logging.instance.log("batch request: $request");
|
||
|
||
// send batch request
|
||
final response = (await _rpcClient!.request(request)) as List<dynamic>;
|
||
|
||
// check for errors, format and throw if there are any
|
||
final List<String> errors = [];
|
||
for (int i = 0; i < response.length; i++) {
|
||
final result = response[i];
|
||
if (result["error"] != null || result["result"] == null) {
|
||
errors.add(result.toString());
|
||
}
|
||
}
|
||
if (errors.isNotEmpty) {
|
||
String error = "[\n";
|
||
for (int i = 0; i < errors.length; i++) {
|
||
error += "${errors[i]}\n";
|
||
}
|
||
error += "]";
|
||
throw Exception("JSONRPC response error: $error");
|
||
}
|
||
|
||
currentFailoverIndex = -1;
|
||
return List<Map<String, dynamic>>.from(response, growable: false);
|
||
} on WifiOnlyException {
|
||
rethrow;
|
||
} on SocketException {
|
||
// likely timed out so then retry
|
||
if (retries > 0) {
|
||
return batchRequest(
|
||
command: command,
|
||
args: args,
|
||
connectionTimeout: connectionTimeout,
|
||
retries: retries - 1,
|
||
);
|
||
} else {
|
||
rethrow;
|
||
}
|
||
} catch (e) {
|
||
if (failovers != null && currentFailoverIndex < failovers!.length - 1) {
|
||
currentFailoverIndex++;
|
||
return batchRequest(
|
||
command: command,
|
||
args: args,
|
||
connectionTimeout: connectionTimeout,
|
||
);
|
||
} else {
|
||
currentFailoverIndex = -1;
|
||
rethrow;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Ping the server to ensure it is responding
|
||
///
|
||
/// Returns true if ping succeeded
|
||
Future<bool> ping({String? requestID, int retryCount = 1}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'server.ping',
|
||
connectionTimeout: const Duration(seconds: 2),
|
||
retries: retryCount,
|
||
).timeout(const Duration(seconds: 2)) as Map<String, dynamic>;
|
||
return response.keys.contains("result") && response["result"] == null;
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Get most recent block header.
|
||
///
|
||
/// Returns a map with keys 'height' and 'hex' corresponding to the block height
|
||
/// and the binary header as a hexadecimal string.
|
||
/// Ex:
|
||
/// {
|
||
// "height": 520481,
|
||
// "hex": "00000020890208a0ae3a3892aa047c5468725846577cfcd9b512b50000000000000000005dc2b02f2d297a9064ee103036c14d678f9afc7e3d9409cf53fd58b82e938e8ecbeca05a2d2103188ce804c4"
|
||
// }
|
||
Future<Map<String, dynamic>> getBlockHeadTip({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.headers.subscribe',
|
||
);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Get server info
|
||
///
|
||
/// Returns a map with server information
|
||
/// Ex:
|
||
// {
|
||
// "genesis_hash": "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943",
|
||
// "hosts": {"14.3.140.101": {"tcp_port": 51001, "ssl_port": 51002}},
|
||
// "protocol_max": "1.0",
|
||
// "protocol_min": "1.0",
|
||
// "pruning": null,
|
||
// "server_version": "ElectrumX 1.0.17",
|
||
// "hash_function": "sha256"
|
||
// }
|
||
Future<Map<String, dynamic>> getServerFeatures({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'server.features',
|
||
);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Broadcast a transaction to the network.
|
||
///
|
||
/// The transaction hash as a hexadecimal string.
|
||
Future<String> broadcastTransaction({
|
||
required String rawTx,
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.transaction.broadcast',
|
||
args: [
|
||
rawTx,
|
||
],
|
||
);
|
||
return response["result"] as String;
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return the confirmed and unconfirmed balances for the scripthash of a given scripthash
|
||
///
|
||
/// Returns a map with keys confirmed and unconfirmed. The value of each is
|
||
/// the appropriate balance in minimum coin units (satoshis).
|
||
/// Ex:
|
||
/// {
|
||
/// "confirmed": 103873966,
|
||
/// "unconfirmed": 23684400
|
||
/// }
|
||
Future<Map<String, dynamic>> getBalance({
|
||
required String scripthash,
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.scripthash.get_balance',
|
||
args: [
|
||
scripthash,
|
||
],
|
||
);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return the confirmed and unconfirmed history for the given scripthash.
|
||
///
|
||
/// Returns a list of maps that contain the tx_hash and height of the tx.
|
||
/// Ex:
|
||
/// [
|
||
// {
|
||
// "height": 200004,
|
||
// "tx_hash": "acc3758bd2a26f869fcc67d48ff30b96464d476bca82c1cd6656e7d506816412"
|
||
// },
|
||
// {
|
||
// "height": 215008,
|
||
// "tx_hash": "f3e1bf48975b8d6060a9de8884296abb80be618dc00ae3cb2f6cee3085e09403"
|
||
// }
|
||
// ]
|
||
Future<List<Map<String, dynamic>>> getHistory({
|
||
required String scripthash,
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.scripthash.get_history',
|
||
connectionTimeout: const Duration(minutes: 5),
|
||
args: [
|
||
scripthash,
|
||
],
|
||
);
|
||
return List<Map<String, dynamic>>.from(response["result"] as List);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
Future<Map<String, List<Map<String, dynamic>>>> getBatchHistory(
|
||
{required Map<String, List<dynamic>> args}) async {
|
||
try {
|
||
final response = await batchRequest(
|
||
command: 'blockchain.scripthash.get_history',
|
||
args: args,
|
||
);
|
||
final Map<String, List<Map<String, dynamic>>> result = {};
|
||
for (int i = 0; i < response.length; i++) {
|
||
result[response[i]["id"] as String] =
|
||
List<Map<String, dynamic>>.from(response[i]["result"] as List);
|
||
}
|
||
return result;
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return an ordered list of UTXOs sent to a script hash of the given scripthash.
|
||
///
|
||
/// Returns a list of maps.
|
||
/// Ex:
|
||
/// [
|
||
// {
|
||
// "tx_pos": 0,
|
||
// "value": 45318048,
|
||
// "tx_hash": "9f2c45a12db0144909b5db269415f7319179105982ac70ed80d76ea79d923ebf",
|
||
// "height": 437146
|
||
// },
|
||
// {
|
||
// "tx_pos": 0,
|
||
// "value": 919195,
|
||
// "tx_hash": "3d2290c93436a3e964cfc2f0950174d8847b1fbe3946432c4784e168da0f019f",
|
||
// "height": 441696
|
||
// }
|
||
// ]
|
||
Future<List<Map<String, dynamic>>> getUTXOs({
|
||
required String scripthash,
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.scripthash.listunspent',
|
||
args: [
|
||
scripthash,
|
||
],
|
||
);
|
||
return List<Map<String, dynamic>>.from(response["result"] as List);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
Future<Map<String, List<Map<String, dynamic>>>> getBatchUTXOs(
|
||
{required Map<String, List<dynamic>> args}) async {
|
||
try {
|
||
final response = await batchRequest(
|
||
command: 'blockchain.scripthash.listunspent',
|
||
args: args,
|
||
);
|
||
final Map<String, List<Map<String, dynamic>>> result = {};
|
||
for (int i = 0; i < response.length; i++) {
|
||
result[response[i]["id"] as String] =
|
||
List<Map<String, dynamic>>.from(response[i]["result"] as List);
|
||
}
|
||
return result;
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Returns a raw transaction given the tx_hash.
|
||
///
|
||
/// Returns a list of maps.
|
||
/// Ex when verbose=false:
|
||
/// "01000000015bb9142c960a838329694d3fe9ba08c2a6421c5158d8f7044cb7c48006c1b48"
|
||
/// "4000000006a4730440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a824"
|
||
/// "6a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee76921"
|
||
/// "3ca8b8b412103bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1"
|
||
/// "f6a4feffffff02c6b68200000000001976a9141041fb024bd7a1338ef1959026bbba86006"
|
||
/// "4fe5f88ac50a8cf00000000001976a91445dac110239a7a3814535c15858b939211f85298"
|
||
/// "88ac61ee0700"
|
||
///
|
||
///
|
||
/// Ex when verbose=true:
|
||
/// {
|
||
/// "blockhash": "0000000000000000015a4f37ece911e5e3549f988e855548ce7494a0a08b2ad6",
|
||
/// "blocktime": 1520074861,
|
||
/// "confirmations": 679,
|
||
/// "hash": "36a3692a41a8ac60b73f7f41ee23f5c917413e5b2fad9e44b34865bd0d601a3d",
|
||
/// "hex": "01000000015bb9142c960a838329694d3fe9ba08c2a6421c5158d8f7044cb7c48006c1b484000000006a4730440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a8246a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee769213ca8b8b412103bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1f6a4feffffff02c6b68200000000001976a9141041fb024bd7a1338ef1959026bbba860064fe5f88ac50a8cf00000000001976a91445dac110239a7a3814535c15858b939211f8529888ac61ee0700",
|
||
/// "locktime": 519777,
|
||
/// "size": 225,
|
||
/// "time": 1520074861,
|
||
/// "txid": "36a3692a41a8ac60b73f7f41ee23f5c917413e5b2fad9e44b34865bd0d601a3d",
|
||
/// "version": 1,
|
||
/// "vin": [ {
|
||
/// "scriptSig": {
|
||
/// "asm": "30440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a8246a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee769213ca8b8b[ALL|FORKID] 03bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1f6a4",
|
||
/// "hex": "4730440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a8246a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee769213ca8b8b412103bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1f6a4"
|
||
/// },
|
||
/// "sequence": 4294967294,
|
||
/// "txid": "84b4c10680c4b74c04f7d858511c42a6c208bae93f4d692983830a962c14b95b",
|
||
/// "vout": 0}],
|
||
/// "vout": [ { "n": 0,
|
||
/// "scriptPubKey": { "addresses": [ "12UxrUZ6tyTLoR1rT1N4nuCgS9DDURTJgP"],
|
||
/// "asm": "OP_DUP OP_HASH160 1041fb024bd7a1338ef1959026bbba860064fe5f OP_EQUALVERIFY OP_CHECKSIG",
|
||
/// "hex": "76a9141041fb024bd7a1338ef1959026bbba860064fe5f88ac",
|
||
/// "reqSigs": 1,
|
||
/// "type": "pubkeyhash"},
|
||
/// "value": 0.0856647},
|
||
/// { "n": 1,
|
||
/// "scriptPubKey": { "addresses": [ "17NMgYPrguizvpJmB1Sz62ZHeeFydBYbZJ"],
|
||
/// "asm": "OP_DUP OP_HASH160 45dac110239a7a3814535c15858b939211f85298 OP_EQUALVERIFY OP_CHECKSIG",
|
||
/// "hex": "76a91445dac110239a7a3814535c15858b939211f8529888ac",
|
||
/// "reqSigs": 1,
|
||
/// "type": "pubkeyhash"},
|
||
/// "value": 0.1360904}]}
|
||
Future<Map<String, dynamic>> getTransaction({
|
||
required String txHash,
|
||
bool verbose = true,
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.transaction.get',
|
||
args: [
|
||
txHash,
|
||
verbose,
|
||
],
|
||
);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Returns the whole anonymity set for denomination in the groupId.
|
||
///
|
||
/// ex:
|
||
/// {
|
||
/// "blockHash": "37effb57352693f4efcb1710bf68e3a0d79ff6b8f1605529de3e0706d9ca21da",
|
||
/// "setHash": "aae1a64f19f5ccce1c242dfe331d8db2883a9508d998efa3def8a64844170fe4",
|
||
/// "coins": [
|
||
/// [dynamic list of length 4],
|
||
/// [dynamic list of length 4],
|
||
/// ....
|
||
/// [dynamic list of length 4],
|
||
/// [dynamic list of length 4],
|
||
/// ]
|
||
/// }
|
||
Future<Map<String, dynamic>> getAnonymitySet({
|
||
String groupId = "1",
|
||
String blockhash = "",
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
Logging.instance.log("attempting to fetch lelantus.getanonymityset...",
|
||
level: LogLevel.Info);
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getanonymityset',
|
||
args: [
|
||
groupId,
|
||
blockhash,
|
||
],
|
||
);
|
||
Logging.instance.log("Fetching lelantus.getanonymityset finished",
|
||
level: LogLevel.Info);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
//TODO add example to docs
|
||
///
|
||
///
|
||
/// Returns the block height and groupId of pubcoin.
|
||
Future<dynamic> getMintData({dynamic mints, String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getmintmetadata',
|
||
args: [
|
||
mints,
|
||
],
|
||
);
|
||
return response["result"];
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
//TODO add example to docs
|
||
/// Returns the whole set of the used coin serials.
|
||
Future<Map<String, dynamic>> getUsedCoinSerials({
|
||
String? requestID,
|
||
required int startNumber,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getusedcoinserials',
|
||
args: [
|
||
"$startNumber",
|
||
]);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
Logging.instance.log(e, level: LogLevel.Error);
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Returns the latest set id
|
||
///
|
||
/// ex: 1
|
||
Future<int> getLatestCoinId({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getlatestcoinid',
|
||
);
|
||
return response["result"] as int;
|
||
} catch (e) {
|
||
Logging.instance.log(e, level: LogLevel.Error);
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
// /// Returns about 13 megabytes of json data as of march 2, 2022
|
||
// Future<Map<String, dynamic>> getCoinsForRecovery(
|
||
// {dynamic setId, String requestID}) async {
|
||
// try {
|
||
// final response = await request(
|
||
// requestID: requestID,
|
||
// command: 'lelantus.getcoinsforrecovery',
|
||
// args: [
|
||
// setId ?? 1,
|
||
// ],
|
||
// );
|
||
// return response["result"];
|
||
// } catch (e) {
|
||
// Logging.instance.log(e);
|
||
// throw e;
|
||
// }
|
||
// }
|
||
|
||
/// Get the current fee rate.
|
||
///
|
||
/// Returns a map with the kay "rate" that corresponds to the free rate in satoshis
|
||
/// Ex:
|
||
/// {
|
||
// "rate": 1000,
|
||
// }
|
||
Future<Map<String, dynamic>> getFeeRate({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.getfeerate',
|
||
);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return the estimated transaction fee per kilobyte for a transaction to be confirmed within a certain number of [blocks].
|
||
///
|
||
/// Returns a Decimal fee rate
|
||
/// Ex:
|
||
/// 0.00001000
|
||
Future<Decimal> estimateFee({String? requestID, required int blocks}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.estimatefee',
|
||
args: [
|
||
blocks,
|
||
],
|
||
);
|
||
return Decimal.parse(response["result"].toString());
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return the minimum fee a low-priority transaction must pay in order to be accepted to the daemon’s memory pool.
|
||
///
|
||
/// Returns a Decimal fee rate
|
||
/// Ex:
|
||
/// 0.00001000
|
||
Future<Decimal> relayFee({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.relayfee',
|
||
);
|
||
return Decimal.parse(response["result"].toString());
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
}
|