diff --git a/.gitignore b/.gitignore
index 0e13eeb..294eca1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+.idea
+*.iml
+
target/
pom.xml.tag
pom.xml.releaseBackup
@@ -9,3 +12,5 @@ buildNumber.properties
.mvn/timing.properties
# https://github.com/takari/maven-wrapper#usage-without-binary-jar
.mvn/wrapper/maven-wrapper.jar
+
+data/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..35faa7b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "ldk"]
+ path = ldk
+ url = https://github.com/lightningdevkit/ldk-garbagecollected.git
diff --git a/.mvn/wrapper/MavenWrapperDownloader.java b/.mvn/wrapper/MavenWrapperDownloader.java
new file mode 100644
index 0000000..b901097
--- /dev/null
+++ b/.mvn/wrapper/MavenWrapperDownloader.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+ private static final String WRAPPER_VERSION = "0.5.6";
+ /**
+ * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+ */
+ private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+ + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+ /**
+ * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+ * use instead of the default one.
+ */
+ private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+ ".mvn/wrapper/maven-wrapper.properties";
+
+ /**
+ * Path where the maven-wrapper.jar will be saved to.
+ */
+ private static final String MAVEN_WRAPPER_JAR_PATH =
+ ".mvn/wrapper/maven-wrapper.jar";
+
+ /**
+ * Name of the property which should be used to override the default download url for the wrapper.
+ */
+ private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+ public static void main(String args[]) {
+ System.out.println("- Downloader started");
+ File baseDirectory = new File(args[0]);
+ System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+ // If the maven-wrapper.properties exists, read it and check if it contains a custom
+ // wrapperUrl parameter.
+ File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+ String url = DEFAULT_DOWNLOAD_URL;
+ if(mavenWrapperPropertyFile.exists()) {
+ FileInputStream mavenWrapperPropertyFileInputStream = null;
+ try {
+ mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+ Properties mavenWrapperProperties = new Properties();
+ mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+ url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+ } catch (IOException e) {
+ System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+ } finally {
+ try {
+ if(mavenWrapperPropertyFileInputStream != null) {
+ mavenWrapperPropertyFileInputStream.close();
+ }
+ } catch (IOException e) {
+ // Ignore ...
+ }
+ }
+ }
+ System.out.println("- Downloading from: " + url);
+
+ File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+ if(!outputFile.getParentFile().exists()) {
+ if(!outputFile.getParentFile().mkdirs()) {
+ System.out.println(
+ "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+ }
+ }
+ System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+ try {
+ downloadFileFromURL(url, outputFile);
+ System.out.println("Done");
+ System.exit(0);
+ } catch (Throwable e) {
+ System.out.println("- Error downloading");
+ e.printStackTrace();
+ System.exit(1);
+ }
+ }
+
+ private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+ if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+ String username = System.getenv("MVNW_USERNAME");
+ char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+ Authenticator.setDefault(new Authenticator() {
+ @Override
+ protected PasswordAuthentication getPasswordAuthentication() {
+ return new PasswordAuthentication(username, password);
+ }
+ });
+ }
+ URL website = new URL(urlString);
+ ReadableByteChannel rbc;
+ rbc = Channels.newChannel(website.openStream());
+ FileOutputStream fos = new FileOutputStream(destination);
+ fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+ fos.close();
+ rbc.close();
+ }
+
+}
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..642d572
--- /dev/null
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar
diff --git a/README.md b/README.md
index 787eaaf..36a6d54 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,10 @@
# ldk-sample-java
sample implementation of LDK for Java (https://github.com/lightningdevkit/ldk-garbagecollected)
+
+## Status / Purpose
+
+This repository contains a sample implementation of LDK as the result of following the steps described in [Building a Node with LDK in Java](https://lightningdevkit.org/docs/build_node).
+Its main purpose is providing feedback to the LDK developers.
+Therefore:
+* code quality / maintainability is bad
+* **do NOT use this implementation in production**
diff --git a/ldk b/ldk
new file mode 160000
index 0000000..a2e02c9
--- /dev/null
+++ b/ldk
@@ -0,0 +1 @@
+Subproject commit a2e02c9f5671cd4315863bfab99ead113b5d714b
diff --git a/ldk-sample/pom.xml b/ldk-sample/pom.xml
new file mode 100644
index 0000000..6e67dac
--- /dev/null
+++ b/ldk-sample/pom.xml
@@ -0,0 +1,38 @@
+
+
+
+ ldk-parent
+ com.getlipa
+ 1.0-SNAPSHOT
+
+ 4.0.0
+
+ ldk-sample
+
+
+
+ org.ldk
+ ldk-java
+ 1.0-SNAPSHOT
+
+
+ org.bitcoinj
+ bitcoinj-core
+ 0.15.10
+ compile
+
+
+ com.squareup.okhttp3
+ okhttp
+ 3.14.9
+
+
+ org.json
+ json
+ 20140107
+
+
+
+
diff --git a/ldk-sample/src/main/java/com/getlipa/ldk/sample/BitcoinCoreChainBackend.java b/ldk-sample/src/main/java/com/getlipa/ldk/sample/BitcoinCoreChainBackend.java
new file mode 100644
index 0000000..8c38850
--- /dev/null
+++ b/ldk-sample/src/main/java/com/getlipa/ldk/sample/BitcoinCoreChainBackend.java
@@ -0,0 +1,215 @@
+package com.getlipa.ldk.sample;
+
+import okhttp3.MediaType;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import org.bitcoinj.core.NetworkParameters;
+import org.bitcoinj.core.Transaction;
+import org.bouncycastle.util.encoders.Hex;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+
+public class BitcoinCoreChainBackend implements ChainBackend {
+
+ private final String URL = Env.get("BTC_CORE_URL");
+ private final String AUTH = Env.get("BTC_CORE_AUTH");
+
+ public static final MediaType JSON
+ = MediaType.get("application/json; charset=utf-8");
+
+ private final OkHttpClient client = new OkHttpClient();
+
+ private final NetworkParameters networkParameters;
+
+ public BitcoinCoreChainBackend(final NetworkParameters networkParameters) {
+ this.networkParameters = networkParameters;
+ }
+
+ @Override
+ public boolean isSynced() {
+ return true;
+ }
+
+ @Override
+ public int blockHeight() {
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"getblockcount\", \"params\": []}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, body))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ final String response;
+ try {
+ response = client.newCall(request).execute()
+ .body().string();
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ final var json = new JSONObject(response);
+ return json.getInt("result");
+ }
+
+ @Override
+ public int blockHeight(byte[] blockHash) {
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"getblockheader\", \"params\": [\"%s\", true]}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, String.format(body, Hex.toHexString(blockHash))))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ try {
+ final var response = client.newCall(request).execute()
+ .body().string();
+ final var json = new JSONObject(response);
+ return json.getJSONObject("result").getInt("height");
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public byte[] blockHash(int height) {
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"getblockhash\", \"params\": [%s]}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, String.format(body, height)))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ try {
+ final var response = client.newCall(request).execute()
+ .body().string();
+ final var json = new JSONObject(response);
+ return Hex.decode(json.getString("result"));
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public byte[] blockHeader(final byte[] hash) {
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"getblockheader\", \"params\": [\"%s\"]}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, String.format(body, Hex.toHexString(hash))))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ try {
+ final var response = client.newCall(request).execute()
+ .body()
+ .string();
+ System.out.println(response);
+ final var json = new JSONObject(response).getJSONObject("result");
+ final var buffer = ByteBuffer.wrap(new byte[80]);
+ buffer.order(ByteOrder.LITTLE_ENDIAN);
+ buffer.putInt(json.getInt("version"));
+ buffer.put(reverse(Hex.decode(json.getString("previousblockhash"))), 0, 32);
+ buffer.put(reverse(Hex.decode(json.getString("merkleroot"))), 0, 32);
+ buffer.putInt(json.getInt("time"));
+ buffer.put(reverse(Hex.decode(json.getString("bits"))), 0, 4);
+ buffer.putInt(json.getInt("nonce"));
+ return (buffer.array());
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public void publish(final byte[] transaction) {
+ final var jtx = new Transaction(networkParameters, transaction);
+ final var tx = Hex.toHexString(jtx.bitcoinSerialize());
+ System.out.printf("Broadcasting tx: %s%n", tx);
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"sendrawtransaction\", \"params\": [\"0%s\"]}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, String.format(body, tx)))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ try {
+ final var response = client.newCall(request).execute()
+ .body().string();
+ final var json = new JSONObject(response);
+ System.out.println(json);
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public boolean isConfirmed(final byte[] txid) {
+ return determineBlockInfo(txid) != null;
+ }
+
+ @Override
+ public TxBlockInfo determineBlockInfo(final byte[] txid) {
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"getrawtransaction\", \"params\": [\"%s\", true]}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, String.format(body, Hex.toHexString(reverse(txid)))))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ try {
+ final var response = client.newCall(request).execute()
+ .body()
+ .string();
+ System.out.println(response);
+ if (!new JSONObject(response).has("result")) {
+ return null;
+ }
+ final var json = new JSONObject(response).getJSONObject("result");
+
+ return new TxBlockInfo(
+ Hex.decode(json.getString("blockhash")),
+ 0,
+ 0,
+ Hex.decode(json.getString("hex")),
+ txid);
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public long determineBlockIndex(final byte[] blockHash, final byte[] txid) {
+ final var body = "{\"jsonrpc\": \"1.0\", \"id\": \"curltest\", \"method\": \"getblock\", \"params\": [\"%s\"]}";
+ final var request = new Request.Builder()
+ .url(URL)
+ .post(RequestBody.create(JSON, String.format(
+ body,
+ Hex.toHexString(blockHash)
+ )))
+ .addHeader("Authorization", String.format("Basic %s", AUTH))
+ .build();
+ try {
+ final var response = client.newCall(request).execute()
+ .body()
+ .string();
+ final var json = new JSONObject(response).getJSONObject("result");
+ System.out.println(json);
+ if (!json.has("tx")) {
+ return -1;
+ }
+ final var tx = json.getJSONArray("tx");
+ for (var index = 0; index < tx.length(); index++) {
+ if (Arrays.equals(Hex.decode(tx.getString(index)), reverse(txid))) {
+ return index;
+ }
+ }
+ return -1;
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ static byte[] reverse(final byte[] input) {
+ final var output = new byte[input.length];
+ for (var i = 0; i < input.length; i++) {
+ output[input.length - i -1] = input[i];
+ }
+ return output;
+ }
+}
diff --git a/ldk-sample/src/main/java/com/getlipa/ldk/sample/ChainBackend.java b/ldk-sample/src/main/java/com/getlipa/ldk/sample/ChainBackend.java
new file mode 100644
index 0000000..e0f07ea
--- /dev/null
+++ b/ldk-sample/src/main/java/com/getlipa/ldk/sample/ChainBackend.java
@@ -0,0 +1,75 @@
+package com.getlipa.ldk.sample;
+
+import java.util.Arrays;
+import java.util.Objects;
+
+public interface ChainBackend {
+
+ class BlockHeader {
+ public final int height;
+ public final byte[] data;
+
+ public BlockHeader(final int height, final byte[] data) {
+ this.height = height;
+ this.data = data;
+ }
+ }
+
+ class TxBlockInfo {
+ public final Block block;
+ public final byte[] data;
+ public final byte[] id;
+
+ public TxBlockInfo(final byte[] blockHash, final int blockHeight, final long index, final byte[] data, final byte[] id) {
+ this.id = id;
+ this.block = new Block(blockHash, blockHeight);
+ this.data = data;
+ }
+ }
+
+ class Block {
+ public int height;
+ public final byte[] hash;
+
+ public Block(final byte[] hash, final int height) {
+ this.hash = hash;
+ this.height = height;
+ }
+
+ @Override
+ public boolean equals(final Object other) {
+ if (this == other){
+ return true;
+ }
+ if (other == null || getClass() != other.getClass()){
+ return false;
+ }
+ final Block block = (Block) other;
+ return height == block.height && Arrays.equals(hash, block.hash);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(height, hash);
+ }
+ }
+
+ boolean isSynced();
+
+ int blockHeight();
+
+ int blockHeight(byte[] blockHash);
+
+ byte[] blockHash(int height);
+
+ byte[] blockHeader(byte[] hash);
+
+ void publish(byte[] transaction);
+
+ boolean isConfirmed(byte[] txid);
+
+ TxBlockInfo determineBlockInfo(byte[] txid);
+
+ long determineBlockIndex(byte[] blockHash, byte[] txid);
+
+}
diff --git a/ldk-sample/src/main/java/com/getlipa/ldk/sample/Env.java b/ldk-sample/src/main/java/com/getlipa/ldk/sample/Env.java
new file mode 100644
index 0000000..4617634
--- /dev/null
+++ b/ldk-sample/src/main/java/com/getlipa/ldk/sample/Env.java
@@ -0,0 +1,12 @@
+package com.getlipa.ldk.sample;
+
+public class Env {
+
+ public static String get(String env) {
+ final var value = System.getenv(env);
+ if (value == null) {
+ throw new IllegalStateException(String.format("environment variable %s is not set", env));
+ }
+ return value;
+ }
+}
diff --git a/ldk-sample/src/main/java/com/getlipa/ldk/sample/LDKSample.java b/ldk-sample/src/main/java/com/getlipa/ldk/sample/LDKSample.java
new file mode 100644
index 0000000..ba9ff97
--- /dev/null
+++ b/ldk-sample/src/main/java/com/getlipa/ldk/sample/LDKSample.java
@@ -0,0 +1,360 @@
+package com.getlipa.ldk.sample;
+
+import org.bitcoinj.core.Coin;
+import org.bitcoinj.core.NetworkParameters;
+import org.bitcoinj.core.Transaction;
+import org.bitcoinj.core.TransactionInput;
+import org.bitcoinj.core.TransactionWitness;
+import org.bitcoinj.script.Script;
+import org.bouncycastle.util.encoders.Hex;
+import org.ldk.batteries.ChannelManagerConstructor;
+import org.ldk.batteries.NioPeerHandler;
+import org.ldk.enums.ConfirmationTarget;
+import org.ldk.enums.Currency;
+import org.ldk.enums.Network;
+import org.ldk.structs.BroadcasterInterface;
+import org.ldk.structs.ChainMonitor;
+import org.ldk.structs.ChannelManager;
+import org.ldk.structs.ChannelMonitor;
+import org.ldk.structs.ChannelMonitorUpdate;
+import org.ldk.structs.Event;
+import org.ldk.structs.Filter;
+import org.ldk.structs.Invoice;
+import org.ldk.structs.KeysManager;
+import org.ldk.structs.Option_C2Tuple_usizeTransactionZZ;
+import org.ldk.structs.Option_u64Z;
+import org.ldk.structs.OutPoint;
+import org.ldk.structs.Persist;
+import org.ldk.structs.Result_InvoiceSignOrCreationErrorZ;
+import org.ldk.structs.Result_NoneChannelMonitorUpdateErrZ;
+import org.ldk.structs.Result_TransactionNoneZ;
+import org.ldk.structs.TxOut;
+import org.ldk.structs.UserConfig;
+import org.ldk.structs.UtilMethods;
+import org.ldk.structs.WatchedOutput;
+import org.ldk.util.TwoTuple;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+import static org.bitcoinj.core.NetworkParameters.ID_REGTEST;
+
+public class LDKSample {
+
+ private final String SEED = Env.get("LDK_SEED");
+
+ private final String PEER_PUBKEY = Env.get("LDK_PEER_PUBKEY");
+ private final String PEER_HOST = Env.get("LDK_PEER_HOST");
+ private final int PEER_PORT = Integer.parseInt(Env.get("LDK_PEER_PORT"));
+
+ private final String refundAddress = "";
+
+ private final ChainBackend chainBackend = new BitcoinCoreChainBackend(NetworkParameters.fromID(ID_REGTEST));
+
+ public static void main(String[] args) throws Exception {
+ LDKSample app = new LDKSample();
+ app.start();
+ }
+
+ static class WatchedTransaction {
+ public final byte[] id;
+
+ public final byte[] scriptPubKey;
+
+ public WatchedTransaction(final byte[] id, final byte[] scriptPubKey) {
+ this.id = id;
+ this.scriptPubKey = scriptPubKey;
+ }
+ }
+
+ void start() throws Exception {
+ // Step 1
+ final var feeEstimator = org.ldk.structs.FeeEstimator.new_impl(confirmation_target -> {
+ return 12500; // TODO
+ });
+
+ // Step 2
+ final var logger = org.ldk.structs.Logger.new_impl(System.out::println);
+
+ // Step 3
+ final BroadcasterInterface txBroadcaster = BroadcasterInterface.new_impl(chainBackend::publish);
+
+ // Step 4 - SKIPPED / OPTIONAL
+
+ // Step 5
+ final var persist = Persist.new_impl(new Persist.PersistInterface() {
+
+ @Override
+ public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(final OutPoint id, final ChannelMonitor data) {
+ System.out.printf("Persist new %s / %s%n", Hex.toHexString(id.to_channel_id()), Hex.toHexString(reverse(id.get_txid())));
+ persist(id, data.write());
+ return Result_NoneChannelMonitorUpdateErrZ.ok();
+ }
+
+ @Override
+ public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(final OutPoint id, final ChannelMonitorUpdate update, final ChannelMonitor data) {
+ System.out.printf("Persist existing %s / %s%n", Hex.toHexString(id.to_channel_id()), Hex.toHexString(reverse(id.get_txid())));
+ persist(id, data.write());
+ return Result_NoneChannelMonitorUpdateErrZ.ok();
+ }
+
+ private void persist(OutPoint id, byte[] data) {
+ final var identifier = String.format("channels/%s.dat", Hex.toHexString(id.to_channel_id()));
+ write(identifier, data);
+ }
+ });
+
+ // Step 7
+ final var relevantTxs = new ArrayList();
+ final var relevantOutputs = new ArrayList();
+ final Filter filter = Filter.new_impl(new Filter.FilterInterface() {
+ @Override
+ public void register_tx(byte[] txid, byte[] script_pubkey) {
+ relevantTxs.add(new WatchedTransaction(txid, script_pubkey));
+ }
+
+ @Override
+ public Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output) {
+ relevantOutputs.add(output);
+ return Option_C2Tuple_usizeTransactionZZ.none();
+ }
+ });
+
+ // Step 8
+ final ChainMonitor chainMonitor = ChainMonitor.of(filter, txBroadcaster, logger, feeEstimator, persist);
+
+ // Step 9
+ final var seed = Hex.decode(SEED);
+ final var startupTime = System.currentTimeMillis();
+ final var keyManager = KeysManager.of(
+ seed,
+ startupTime / 1000,
+ (int) (startupTime * 1000)
+ );
+
+ // Step 10
+ final var directory = new File("data/channels");
+ var channelMonitors = new byte[][]{};
+ if (directory.exists() && directory.isDirectory()) {
+ channelMonitors = Arrays.stream(directory.listFiles())
+ .map(File::toPath)
+ .map(path -> {
+ try {
+ return (Files.readAllBytes(path));
+ } catch (IOException e) {
+ return null;
+ }
+ })
+ .filter(Objects::nonNull)
+ .toArray(byte[][]::new);
+ }
+
+ // Step 11
+ final var channelManagerFile = new File("data/channel-manager.dat");
+ byte[] serializedChannelManager = null;
+ if (channelManagerFile.exists() && channelManagerFile.isFile()) {
+ serializedChannelManager = Files.readAllBytes(channelManagerFile.toPath());
+ }
+
+ ChannelManagerConstructor channelManagerConstructor;
+ if (serializedChannelManager == null) {
+ final var currentBlockHeight = chainBackend.blockHeight(); //126;
+ final var latestBlockHash = chainBackend.blockHash(currentBlockHeight);
+ channelManagerConstructor = new ChannelManagerConstructor(
+ Network.LDKNetwork_Regtest,
+ UserConfig.with_default(),
+ latestBlockHash,
+ currentBlockHeight,
+ keyManager.as_KeysInterface(),
+ feeEstimator,
+ chainMonitor,
+ null,
+ txBroadcaster,
+ logger
+ );
+ } else {
+ channelManagerConstructor = new ChannelManagerConstructor(
+ serializedChannelManager,
+ channelMonitors,
+ keyManager.as_KeysInterface(),
+ feeEstimator,
+ chainMonitor,
+ filter,
+ null,
+ txBroadcaster,
+ logger
+ );
+ }
+ final ChannelManager channelManager = channelManagerConstructor.channel_manager;
+
+ // Step 6
+ final var channelManagerPersister = new ChannelManagerConstructor.ChannelManagerPersister() {
+
+ @Override
+ public void handle_event(final Event e) {
+ final var params = NetworkParameters.fromID(ID_REGTEST);
+ if (e instanceof Event.FundingGenerationReady) {
+ var event = (Event.FundingGenerationReady) e;
+ final var transaction = new Transaction(params);
+ final var input = new TransactionInput(params, transaction, new byte[0]);
+ input.setWitness(new TransactionWitness(2));
+ input.getWitness().setPush(0, new byte[]{0x1});
+ transaction.addInput(input);
+ final var script = new Script(event.output_script);
+ final var value = Coin.SATOSHI.multiply(event.channel_value_satoshis);
+ transaction.addOutput(value, script);
+ channelManager.funding_transaction_generated(event.temporary_channel_id, transaction.bitcoinSerialize());
+ } else if (e instanceof Event.PaymentReceived) {
+ var event = (Event.PaymentReceived) e;
+ System.out.printf("Payment of %s SAT received.%n", event.amt);
+ channelManager.claim_funds(event.payment_preimage);
+ } else if (e instanceof Event.PaymentSent) {
+ var event = (Event.PaymentSent) e;
+ System.out.printf("Payment with preimage '%s' sent.%n", Hex.toHexString(event.payment_preimage));
+ } else if (e instanceof Event.PaymentFailed) {
+ var event = (Event.PaymentFailed) e;
+ System.out.printf("Payment with payment hash '%s' failed.%n", Hex.toHexString(event.payment_hash));
+ } else if (e instanceof Event.PendingHTLCsForwardable) {
+ var event = (Event.PendingHTLCsForwardable) e;
+ channelManager.process_pending_htlc_forwards();
+ } else if (e instanceof Event.SpendableOutputs) {
+ var event = (Event.SpendableOutputs) e;
+ final var tx = keyManager.spend_spendable_outputs(
+ event.outputs,
+ new TxOut[]{},
+ Hex.decode(refundAddress),
+ feeEstimator.get_est_sat_per_1000_weight(ConfirmationTarget.LDKConfirmationTarget_HighPriority)
+ );
+ if (tx instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK) {
+ chainBackend.publish(((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx).res);
+ }
+ }
+ }
+
+ @Override
+ public void persist_manager(final byte[] bytes) {
+ write("channel-manager.dat", bytes);
+ }
+ };
+
+ // Step 12 - TODO
+ // Retrieve transaction IDs to check the chain for un-confirmation.
+ byte[][] relevant_txids_1 = channelManager.as_Confirm().get_relevant_txids();
+ byte[][] relevant_txids_2 = chainMonitor.as_Confirm().get_relevant_txids();
+ final var list = new ArrayList<>(List.of(relevant_txids_1));
+ list.addAll(List.of(relevant_txids_2));
+ list.stream()
+ .filter(txid -> !chainBackend.isConfirmed(txid))
+ .forEach(txid -> {
+ channelManager.as_Confirm().transaction_unconfirmed(txid);
+ chainMonitor.as_Confirm().transaction_unconfirmed(txid);
+ });
+
+ checkBlockchain(relevantTxs, channelManager, chainMonitor);
+ channelManagerConstructor.chain_sync_completed(channelManagerPersister);
+
+ // Step 13 - DONE
+ final NioPeerHandler peerHandler = channelManagerConstructor.nio_peer_handler;
+ final int port = 9730;
+ peerHandler.bind_listener(new InetSocketAddress("0.0.0.0", port));
+ System.out.printf("Node started on port %d. PubKey is %s%n", port, Hex.toHexString(channelManager.get_our_node_id()));
+
+ final var peerPubKey = Hex.decode(PEER_PUBKEY);
+
+ System.out.printf("Currently having %d channels, %d of them are ready to use.%n", channelManager.list_channels().length, channelManager.list_usable_channels().length);
+
+ peerHandler.connect(
+ peerPubKey,
+ new InetSocketAddress(PEER_HOST, PEER_PORT),
+ 10000
+ );
+
+
+ createInvoice(channelManager, keyManager);
+
+ while (true) {
+ checkBlockchain(relevantTxs, channelManager, chainMonitor);
+ System.out.printf("Currently having %d channels, %d of them are ready to use.%n", channelManager.list_channels().length, channelManager.list_usable_channels().length);
+ Thread.sleep(10000);
+ }
+ }
+
+ void checkBlockchain(List relevantTxs, ChannelManager channelManager, ChainMonitor chainMonitor) {
+ relevantTxs.stream()
+ .map(watchedTransaction -> chainBackend.determineBlockInfo(watchedTransaction.id))
+ .filter(Objects::nonNull)
+ .collect(Collectors.groupingBy(txBlockInfo -> txBlockInfo.block))
+ .entrySet()
+ .stream()
+ .peek(entry -> {
+ final var block = entry.getKey();
+ block.height = chainBackend.blockHeight(block.hash);
+ })
+ .sorted(Comparator.comparing(entry -> entry.getKey().height))
+ .forEach(entry -> {
+ final var block = entry.getKey();
+ final var txData = new TwoTuple[entry.getValue().size()];
+ var i = 0;
+ for (final var txInfo : entry.getValue()) {
+ txData[i] = new TwoTuple<>(chainBackend.determineBlockIndex(block.hash, txInfo.id), txInfo.data);
+ i++;
+ }
+ final var blockHeader = chainBackend.blockHeader(block.hash);
+ final var blockHeight = block.height;
+ channelManager.as_Confirm().transactions_confirmed(blockHeader, txData, blockHeight);
+ chainMonitor.as_Confirm().transactions_confirmed(blockHeader, txData, blockHeight);
+ });
+
+ final var currentBlockHeight = chainBackend.blockHeight();
+ final var latestBlockHash = chainBackend.blockHash(currentBlockHeight);
+ final var latestBlockHeader = chainBackend.blockHeader(latestBlockHash);
+ channelManager.as_Confirm().best_block_updated(latestBlockHeader, currentBlockHeight);
+ chainMonitor.as_Confirm().best_block_updated(latestBlockHeader, currentBlockHeight);
+ }
+
+ void createInvoice(ChannelManager channelManager, KeysManager keysManager) {
+ final var amountMsat = 10000L;
+ Result_InvoiceSignOrCreationErrorZ result = UtilMethods.create_invoice_from_channelmanager(
+ channelManager,
+ keysManager.as_KeysInterface(),
+ Currency.LDKCurrency_Regtest,
+ Option_u64Z.some(amountMsat),
+ "test invoice"
+ );
+ assert result instanceof Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK;
+ Invoice invoice = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) result).res;
+ System.out.printf("Invoice: %s%n", invoice.to_str());
+ }
+
+ static byte[] reverse(final byte input[]) {
+ final var output = new byte[input.length + 1];
+ for (var i = 0; i < input.length; i++) {
+ output[input.length - i] = input[i];
+ }
+ return output;
+ }
+
+ static void write(final String identifier, final byte[] data) {
+ try {
+ final var fileName = String.format("data/%s", identifier);
+ final var file = new File(fileName);
+ if (file.exists() || file.getParentFile().mkdirs() && file.createNewFile()) {
+ final var out = new FileOutputStream(fileName);
+ out.write(data);
+ out.close();
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+}
diff --git a/mvnw b/mvnw
new file mode 100755
index 0000000..41c0f0c
--- /dev/null
+++ b/mvnw
@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+# JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+# M2_HOME - location of maven2's installed home dir
+# MAVEN_OPTS - parameters passed to the Java VM when running Maven
+# e.g. to debug Maven itself, use
+# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+ if [ -f /etc/mavenrc ] ; then
+ . /etc/mavenrc
+ fi
+
+ if [ -f "$HOME/.mavenrc" ] ; then
+ . "$HOME/.mavenrc"
+ fi
+
+fi
+
+# OS specific support. $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+ CYGWIN*) cygwin=true ;;
+ MINGW*) mingw=true;;
+ Darwin*) darwin=true
+ # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+ # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+ if [ -z "$JAVA_HOME" ]; then
+ if [ -x "/usr/libexec/java_home" ]; then
+ export JAVA_HOME="`/usr/libexec/java_home`"
+ else
+ export JAVA_HOME="/Library/Java/Home"
+ fi
+ fi
+ ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+ if [ -r /etc/gentoo-release ] ; then
+ JAVA_HOME=`java-config --jre-home`
+ fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+ ## resolve links - $0 may be a link to maven's home
+ PRG="$0"
+
+ # need this for relative symlinks
+ while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG="`dirname "$PRG"`/$link"
+ fi
+ done
+
+ saveddir=`pwd`
+
+ M2_HOME=`dirname "$PRG"`/..
+
+ # make it fully qualified
+ M2_HOME=`cd "$M2_HOME" && pwd`
+
+ cd "$saveddir"
+ # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --unix "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME="`(cd "$M2_HOME"; pwd)`"
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+ javaExecutable="`which javac`"
+ if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+ # readlink(1) is not available as standard on Solaris 10.
+ readLink=`which readlink`
+ if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+ if $darwin ; then
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+ else
+ javaExecutable="`readlink -f \"$javaExecutable\"`"
+ fi
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+ JAVA_HOME="$javaHome"
+ export JAVA_HOME
+ fi
+ fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+ if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ else
+ JAVACMD="`which java`"
+ fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+ echo "Error: JAVA_HOME is not defined correctly." >&2
+ echo " We cannot execute $JAVACMD" >&2
+ exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+ echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+ if [ -z "$1" ]
+ then
+ echo "Path not specified to find_maven_basedir"
+ return 1
+ fi
+
+ basedir="$1"
+ wdir="$1"
+ while [ "$wdir" != '/' ] ; do
+ if [ -d "$wdir"/.mvn ] ; then
+ basedir=$wdir
+ break
+ fi
+ # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+ if [ -d "${wdir}" ]; then
+ wdir=`cd "$wdir/.."; pwd`
+ fi
+ # end of workaround
+ done
+ echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+ if [ -f "$1" ]; then
+ echo "$(tr -s '\n' ' ' < "$1")"
+ fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+ exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found .mvn/wrapper/maven-wrapper.jar"
+ fi
+else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+ fi
+ if [ -n "$MVNW_REPOURL" ]; then
+ jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+ else
+ jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+ fi
+ while IFS="=" read key value; do
+ case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+ esac
+ done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Downloading from: $jarUrl"
+ fi
+ wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+ if $cygwin; then
+ wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+ fi
+
+ if command -v wget > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found wget ... using wget"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ wget "$jarUrl" -O "$wrapperJarPath"
+ else
+ wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+ fi
+ elif command -v curl > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found curl ... using curl"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ curl -o "$wrapperJarPath" "$jarUrl" -f
+ else
+ curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+ fi
+
+ else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Falling back to using Java to download"
+ fi
+ javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+ # For Cygwin, switch paths to Windows format before running javac
+ if $cygwin; then
+ javaClass=`cygpath --path --windows "$javaClass"`
+ fi
+ if [ -e "$javaClass" ]; then
+ if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Compiling MavenWrapperDownloader.java ..."
+ fi
+ # Compiling the Java class
+ ("$JAVA_HOME/bin/javac" "$javaClass")
+ fi
+ if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ # Running the downloader
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Running MavenWrapperDownloader.java ..."
+ fi
+ ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+ fi
+ fi
+ fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+ echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --path --windows "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+ [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+ MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+ $MAVEN_OPTS \
+ -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+ "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+ ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/mvnw.cmd b/mvnw.cmd
new file mode 100644
index 0000000..8611571
--- /dev/null
+++ b/mvnw.cmd
@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+ IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Found %WRAPPER_JAR%
+ )
+) else (
+ if not "%MVNW_REPOURL%" == "" (
+ SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+ )
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Couldn't find %WRAPPER_JAR%, downloading it ...
+ echo Downloading from: %DOWNLOAD_URL%
+ )
+
+ powershell -Command "&{"^
+ "$webclient = new-object System.Net.WebClient;"^
+ "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+ "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+ "}"^
+ "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+ "}"
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Finished downloading %WRAPPER_JAR%
+ )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..107f430
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,19 @@
+
+
+ 4.0.0
+
+ com.getlipa
+ ldk-parent
+ pom
+ 1.0-SNAPSHOT
+
+ ldk
+ ldk-sample
+
+
+ 11
+ 11
+
+