Merge pull request #268 from synonymdev/local-funded-channels

Locally funded channels

Author: Jasonvdb

.gitignore

@@ -1,3 +1,4 @@
+.vscode/
 .idea/
 **/.DS_Store
 example/.watchman*

README.md

@@ -12,21 +12,21 @@ This library hopes to simplify the process of adding Lightning via LDK to any Re
 yarn add @synonymdev/react-native-ldk
 #or
 npm i -S @synonymdev/react-native-ldk
-````
+```
 
 ### iOS installation
 ```bash
 cd ios && pod install && cd ../
-````
+```
 
 ### Android installation
 1. Add the following line to `dependencies` in `/android/app/build.gradle`
-```
-dependencies {
-  ...
-  implementation files("../../node_modules/@synonymdev/react-native-ldk/android/libs/LDK-release.aar")
-}
-```
+    ```groovy
+    dependencies {
+      //...
+      implementation files("../../node_modules/@synonymdev/react-native-ldk/android/libs/LDK-release.aar") // <- this
+    }
+    ```
 2. Ensure `minSdkVersion` is set to at least `24` in `/android/build.gradle`
 
 ## Development
@@ -40,19 +40,32 @@ dependencies {
   5. In the popup that appears select `JavaDocs` and tap `OK` then `OK` again
 
 ## Running example app
+See also [`./example/README.md`](./example/README.md)
 ```bash
-
-#Build dist files
+# Build dist files
 git clone https://github.com/synonymdev/react-native-ldk.git
 cd react-native-ldk/lib/ && yarn install && yarn build && cd ../
 
 cd example/ && yarn install && yarn rn-setup
 
 yarn ios
-#or
+# or
 yarn android
 ```
 
+### Update config to match your local setup
+In `constants.ts` update `peers.lnd` if you're using Polar locally.
+### Example for Android
+```ts
+//  export const peers = {
+// 	lnd: {
+    pubKey:
+      '_033f4d3032ce7f54224f4bd9747b50b7cd72074a859758e40e1ca46ffa79a34324_',
+    address: '10.0.2.2',
+    port: 9737,
+// },
+```
+
 ## Notes
  - It is important to not mix and match account names and seeds when starting LDK. Doing so can result in a corrupt save.
 

example/Dev.tsx

@@ -25,7 +25,12 @@ import lm, {
 	TChannelUpdate,
 } from '@synonymdev/react-native-ldk';
 import { backupServerDetails, peers } from './utils/constants';
-import { createNewAccount, getAccount, getAddress } from './utils/helpers';
+import {
+	createNewAccount,
+	getAccount,
+	getAddress,
+	getAddressFromScriptPubKey,
+} from './utils/helpers';
 import RNFS from 'react-native-fs';
 
 let logSubscription: EmitterSubscription | undefined;
@@ -41,6 +46,7 @@ const Dev = (): ReactElement => {
 	const [nodeStarted, setNodeStarted] = useState(false);
 	const [showLogs, setShowLogs] = useState(false);
 	const [logContent, setLogContent] = useState('');
+	const [temporaryChannelId, setTemporaryChannelId] = useState(''); //For funding channels locally
 
 	useEffect(() => {
 		//Restarting LDK on each code update causes constant errors.
@@ -231,7 +237,6 @@ const Dev = (): ReactElement => {
 							}
 						}}
 					/>
-
 					<Button
 						title={'Get Node ID'}
 						onPress={async (): Promise<void> => {
@@ -246,7 +251,6 @@ const Dev = (): ReactElement => {
 							setMessage(`Node ID: ${nodeIdRes.value}`);
 						}}
 					/>
-
 					<Button
 						title={'Sync LDK'}
 						onPress={async (): Promise<void> => {
@@ -258,7 +262,6 @@ const Dev = (): ReactElement => {
 							setMessage(syncRes.value);
 						}}
 					/>
-
 					<View style={styles.buttonRow}>
 						<Button
 							title={'Add Peers'}
@@ -299,7 +302,6 @@ const Dev = (): ReactElement => {
 							}}
 						/>
 					</View>
-
 					<View style={styles.buttonRow}>
 						<Button
 							title={'List channels'}
@@ -393,7 +395,6 @@ const Dev = (): ReactElement => {
 							}}
 						/>
 					</View>
-
 					<View style={styles.buttonRow}>
 						<Button
 							title={'List watch transactions'}
@@ -409,7 +410,6 @@ const Dev = (): ReactElement => {
 							}}
 						/>
 					</View>
-
 					<Button
 						title={'🤑Get Address Balance'}
 						onPress={async (): Promise<void> => {
@@ -421,7 +421,6 @@ const Dev = (): ReactElement => {
 							);
 						}}
 					/>
-
 					<Button
 						title={'Recover all outputs attempt'}
 						onPress={async (): Promise<void> => {
@@ -435,7 +434,6 @@ const Dev = (): ReactElement => {
 							setMessage(res.value);
 						}}
 					/>
-
 					<View style={styles.buttonRow}>
 						<Button
 							title={'Get claimed payments'}
@@ -454,7 +452,6 @@ const Dev = (): ReactElement => {
 							}}
 						/>
 					</View>
-
 					<View style={styles.buttonRow}>
 						<Button
 							title={'Create invoice'}
@@ -548,7 +545,6 @@ const Dev = (): ReactElement => {
 							}}
 						/>
 					</View>
-
 					<Button
 						title={'Get network graph nodes'}
 						onPress={async (): Promise<void> => {
@@ -574,7 +570,6 @@ const Dev = (): ReactElement => {
 							setMessage(`${msg}`);
 						}}
 					/>
-
 					<Button
 						title={'Show claimable balances for closed/closing channels'}
 						onPress={async (): Promise<void> => {
@@ -586,7 +581,6 @@ const Dev = (): ReactElement => {
 							setMessage(JSON.stringify(balances.value));
 						}}
 					/>
-
 					<Button
 						title={'List channel monitors'}
 						onPress={async (): Promise<void> => {
@@ -604,6 +598,79 @@ const Dev = (): ReactElement => {
 						}}
 					/>
 
+					<Button
+						title={'Start manual channel open ⛓️'}
+						onPress={async (): Promise<void> => {
+							try {
+								const res = await lm.createChannel({
+									counterPartyNodeId: peers.lnd.pubKey,
+									channelValueSats: 20000,
+									pushSats: 5000,
+								});
+								if (res.isErr()) {
+									setMessage(res.error.message);
+									return;
+								}
+
+								const { value_satoshis, output_script, temp_channel_id } =
+									res.value;
+
+								setTemporaryChannelId(temp_channel_id);
+
+								console.log(res.value);
+
+								const address = getAddressFromScriptPubKey(output_script);
+								const btc = value_satoshis / 100000000;
+
+								console.log('***BITCOIND CLI***');
+								console.log('bitcoin-cli listunspent');
+								console.log(
+									`bitcoin-cli createrawtransaction '[{"txid":"<tx-id>","vout":<index>}]' '{"${address}":${btc}}'`,
+								);
+								console.log(
+									'bitcoin-cli signrawtransactionwithwallet "<raw-transaction-hex>"',
+								);
+								console.log('********');
+
+								setMessage(
+									`Create tx with ${value_satoshis} for address ${address}. See logs for bitcoin-cli commands needed to create funding tx.`,
+								);
+							} catch (e) {
+								setMessage(JSON.stringify(e));
+							}
+						}}
+					/>
+
+					{temporaryChannelId ? (
+						<Button
+							title={'Fund channel (paste psbt)'}
+							onPress={async (): Promise<void> => {
+								try {
+									if (!temporaryChannelId) {
+										return setMessage('Create channel first');
+									}
+
+									const pastedSignedTx = await Clipboard.getString();
+
+									const res = await ldk.fundChannel({
+										temporaryChannelId,
+										counterPartyNodeId: peers.lnd.pubKey,
+										fundingTransaction: pastedSignedTx,
+									});
+									if (res.isErr()) {
+										setMessage(res.error.message);
+										return;
+									}
+
+									setMessage('Channel funded');
+									setTemporaryChannelId('');
+								} catch (e) {
+									setMessage(JSON.stringify(e));
+								}
+							}}
+						/>
+					) : null}
+
 					<Button
 						title={'Show version'}
 						onPress={async (): Promise<void> => {
@@ -615,7 +682,6 @@ const Dev = (): ReactElement => {
 							setMessage(ldkVersion.value.ldk);
 						}}
 					/>
-
 					<Button
 						title={'Show LDK logs'}
 						onPress={async (): Promise<void> => {
@@ -631,7 +697,6 @@ const Dev = (): ReactElement => {
 							}
 						}}
 					/>
-
 					<Button
 						title={'Restore backup from server'}
 						onPress={async (): Promise<void> => {
@@ -658,7 +723,6 @@ const Dev = (): ReactElement => {
 							setMessage('Successfully restored wallet');
 						}}
 					/>
-
 					<Button
 						title={'Backup self check'}
 						onPress={async (): Promise<void> => {
@@ -671,7 +735,6 @@ const Dev = (): ReactElement => {
 							setMessage('Backup server check passed ✅');
 						}}
 					/>
-
 					<Button
 						title={'Restart node'}
 						onPress={async (): Promise<void> => {
@@ -699,7 +762,6 @@ const Dev = (): ReactElement => {
 							setMessage(res.value);
 						}}
 					/>
-
 					<Button
 						title={'Node state'}
 						onPress={async (): Promise<void> => {
@@ -712,7 +774,6 @@ const Dev = (): ReactElement => {
 							setMessage(res.value);
 						}}
 					/>
-
 					<Button
 						title={'List backed up files'}
 						onPress={async (): Promise<void> => {
@@ -726,7 +787,6 @@ const Dev = (): ReactElement => {
 							setMessage(JSON.stringify(res.value));
 						}}
 					/>
-
 					<Button
 						title={'Test file backup'}
 						onPress={async (): Promise<void> => {

example/babel.config.js

@@ -1,3 +1,8 @@
 module.exports = {
 	presets: ['module:metro-react-native-babel-preset'],
+	plugins: [
+		['@babel/plugin-transform-class-properties', { loose: false }],
+		['@babel/plugin-proposal-private-methods', { loose: false }],
+		['@babel/plugin-transform-private-property-in-object', { loose: false }],
+	],
 };

example/ios/Podfile.lock

@@ -316,7 +316,7 @@ PODS:
   - React-jsinspector (0.72.4)
   - React-logger (0.72.4):
     - glog
-  - react-native-ldk (0.0.148):
+  - react-native-ldk (0.0.150):
     - React
   - react-native-randombytes (3.6.1):
     - React-Core
@@ -621,7 +621,7 @@ SPEC CHECKSUMS:
   React-jsiexecutor: c7f826e40fa9cab5d37cab6130b1af237332b594
   React-jsinspector: aaed4cf551c4a1c98092436518c2d267b13a673f
   React-logger: da1ebe05ae06eb6db4b162202faeafac4b435e77
-  react-native-ldk: fda4d4381d40401bdc5c3a9965937d19b232ed08
+  react-native-ldk: 2b19de9eb94dcfd46f3f2a7191502292b75a5d7a
   react-native-randombytes: 421f1c7d48c0af8dbcd471b0324393ebf8fe7846
   react-native-tcp-socket: c1b7297619616b4c9caae6889bcb0aba78086989
   React-NativeModulesApple: edb5ace14f73f4969df6e7b1f3e41bef0012740f

example/metro.config.js

@@ -1,11 +1,26 @@
-const {getDefaultConfig, mergeConfig} = require('@react-native/metro-config');
+const { getDefaultConfig, mergeConfig } = require('@react-native/metro-config');
+const path = require('path');
 
 /**
  * Metro configuration
  * https://facebook.github.io/metro/docs/configuration
  *
  * @type {import('metro-config').MetroConfig}
  */
-const config = {};
+const defaultConfig = getDefaultConfig(__dirname);
 
-module.exports = mergeConfig(getDefaultConfig(__dirname), config);
+const config = {
+	resolver: {
+		extraNodeModules: {
+			stream: path.resolve(__dirname, 'node_modules/stream-browserify'),
+			buffer: path.resolve(__dirname, 'node_modules/buffer/'),
+			assert: path.resolve(__dirname, 'node_modules/assert/'),
+			events: path.resolve(__dirname, 'node_modules/events/'),
+			crypto: path.resolve(__dirname, 'node_modules/crypto-browserify/'),
+			vm: path.resolve(__dirname, 'node_modules/vm-browserify/'),
+			process: path.resolve(__dirname, 'node_modules/process/'),
+		},
+	},
+};
+
+module.exports = mergeConfig(defaultConfig, config);