Permit listening to version messages

.github/CONTRIBUTING.md

@@ -0,0 +1,7 @@
+# Contributing Guidelines
+
+We love pull requests from everyone! Bug reports are also welcome.
+
+However if you've got a question or would like to start a discussion, please post to the
+[bitcoinj google group](https://groups.google.com/forum/#!forum/bitcoinj) or the
+[Bitcoin stack exchange](https://bitcoin.stackexchange.com/questions/tagged/bitcoinj).

.gitignore

@@ -1,8 +1,15 @@
 target
+build
+.gradle
+gradlew
+gradlew.bat
+gradle/wrapper
 .project
 .classpath
 .settings
+bin/
 .idea
 *.iml
+out/
 *.chain
 *.spvchain

.travis.yml

@@ -1,19 +1,15 @@
 # configuration for https://travis-ci.org/bitcoinj/bitcoinj
 sudo: false
+dist: xenial
 language: java
-jdk: oraclejdk8
-install: true # remove default
+jdk:
+  - openjdk8
+  - openjdk11
+install: true
+before_script:
+  - gradle wrapper --gradle-version=4.10.3
 script:
-  - mvn -q clean install -Pno-network
-  - jdk_switcher use openjdk6
-  - cd orchid
-  - mvn -q clean package
-  - cd ../core
-  - mvn -q clean package -Pno-network
-
-after_success:
-  - cd ../core
-  - mvn jacoco:report coveralls:report
+  - ./gradlew clean build
 
 notifications:
   irc:

AUTHORS

@@ -4,36 +4,55 @@ Aaron Voisine
 Adam Mackler
 Alexander Lolis
 Alex Taylor
+Alex Voloshko
+Alok Menghrajani
 Alon Muroch
 Amichai Rothman
 Andreas Schildbach
 andrewtoth
+Bas van Schaik
 Bennett Hoffman
+BigAdam2005
+Bo-Ye
 Carlos Lopez-Camey
 Carsten Otto
+Chang Ming
 Chris
 cyberzac
+Daniel James
 Dave Collins
+David Kingsbury
+David Wilson (dcw312)
 dexX7
 Diego Basch
 elbandi
 eleetas
 En-Ran Zhou
+Eric Winer
 Erik Tierney
 Fireduck
 freak
 Gary Rowe
 Giannis Dzegoutanis
+Gitju
+Giuseppe Raveduto
 Glenn Marien
 GreenAddress
+Greg Laun
 gubatron
 Harald Hoyer
 Jakob Stuber
 Jameson Lopp
+Jan Vornberger
 Jarl Fransson
+Jean-Pierre Rupp
 Jim Burton
 Jiri Peinlich
 Johnathan
+John L. Jegutanis
+Johny George
+Jonathan Cross
+Jon Griffiths
 Jonny Heggheim
 Justas Dobiliauskas
 Kalpesh Parmar
@@ -50,6 +69,8 @@ Martin Zachrison
 matija.mazi@gmail.com
 Matt Bogosian
 Matt Corallo
+Matthew Leon
+Matthew Shaylor
 Michael Bell
 Michael Bumann
 Mike Hearn
@@ -58,26 +79,35 @@ Miron Cuperman
 monk
 Mora Zyx
 mruddy
+Nelson Melina
+Nicola Atzei
 ollekullberg
 Oscar Guindzberg
 Pavol Rusnak
 peacekeeper
 Peter Dettman
 Peter Stockli
 Peter Todd
+Philip Whitehouse
 Piotr Włodarek
-Richard Green
+Richard Green (ragmondo)
 Robin Owens
+Ronald Hoffman (ScripterRon)
 Ross Nicoll
+Saulius Beinorius
 Sean Gilligan
 Sebastian Ortega
 Simon de la Rouviere
 Simon Vermeersch
+Stephan Oeste
 Stephen Reed
+Thomas König
+Tomasz Ludek
 troggy
 Tyler Houlihan
 Willem Noort
 Will Shackleton
 Wojciech Langiewicz
 Xiaofeng Guo
 Ximo Guanter
+zkejid

README.md

@@ -8,51 +8,49 @@ The bitcoinj library is a Java implementation of the Bitcoin protocol, which all
 
 ### Technologies
 
-* Java 6 for the core modules, Java 8 for everything else
-* [Maven 3+](http://maven.apache.org) - for building the project
-* [Orchid](https://github.com/subgraph/Orchid) - for secure communications over [TOR](https://www.torproject.org)
-* [Google Protocol Buffers](https://code.google.com/p/protobuf/) - for use with serialization and hardware communications
+* Java 7+ and Gradle 3.4+ for the `core` module
+* Java 8+ and Gradle 3.4+ for `tools` and `examples`
+* Java 11+ and Gradle 4.10+ for the JavaFX-based `wallettemplate`
+* [Gradle](https://gradle.org/) - for building the project
+* [Google Protocol Buffers](https://github.com/google/protobuf) - for use with serialization and hardware communications
 
 ### Getting started
 
-To get started, it is best to have the latest JDK and Maven installed. The HEAD of the `master` branch contains the latest development code and various production releases are provided on feature branches.
+To get started, it is best to have the latest JDK and Gradle installed. The HEAD of the `master` branch contains the latest development code and various production releases are provided on feature branches.
 
 #### Building from the command line
 
-To perform a full build use
+Official builds are currently using with JDK 8, even though the `core` module is compatible with JDK 7 and later.
+
+To perform a full build (*including* JavaDocs and unit/integration *tests*) use JDK 8+
 ```
-mvn clean package
+gradle clean build
 ```
-You can also run
+If you are running JDK 11 or later and Gradle 4.10 or later, the build will automatically include the JavaFX-based `wallettemplate` module. The outputs are under the `build` directory.
+
+To perform a full build *without* unit/integration *tests* use:
 ```
-mvn site:site
+gradle clean assemble
 ```
-to generate a website with useful information like JavaDocs.
-
-The outputs are under the `target` directory.
 
 #### Building from an IDE
 
-Alternatively, just import the project using your IDE. [IntelliJ](http://www.jetbrains.com/idea/download/) has Maven integration built-in and has a free Community Edition. Simply use `File | Import Project` and locate the `pom.xml` in the root of the cloned project source tree.
+Alternatively, just import the project using your IDE. [IntelliJ](http://www.jetbrains.com/idea/download/) has Gradle integration built-in and has a free Community Edition. Simply use `File | New | Project from Existing Sources` and locate the `build.gradle` in the root of the cloned project source tree.
 
 ### Example applications
 
 These are found in the `examples` module.
 
-#### Forwarding service
+### Where next?
 
-This will download the block chain and eventually print a Bitcoin address that it has generated.
+Now you are ready to [follow the tutorial](https://bitcoinj.github.io/getting-started).
 
-If you send coins to that address, it will forward them on to the address you specified.
+### Testing a SNAPSHOT build
 
-```
-  cd examples
-  mvn exec:java -Dexec.mainClass=org.bitcoinj.examples.ForwardingService -Dexec.args="<insert a bitcoin address here>"
-```
+Building apps with official releases of **bitcoinj** is covered in the [tutorial](https://bitcoinj.github.io/getting-started).
 
-Note that this example app *does not use checkpointing*, so the initial chain sync will be pretty slow. You can make an app that starts up and does the initial sync much faster by including a checkpoints file; see the documentation for
-more info on this technique.
+If you want to develop or test your app with a [Jitpack](https://jitpack.io)-powered build of the latest `master` or `release-0.15` branch of **bitcoinj** follow the dynamically-generated instructions for that branch by following the correct link.
 
-### Where next?
 
-Now you are ready to [follow the tutorial](https://bitcoinj.github.io/getting-started).
+* [master](https://jitpack.io/#bitcoinj/bitcoinj/master-SNAPSHOT) branch
+* [release-0.15](https://jitpack.io/#bitcoinj/bitcoinj/release-0.15-SNAPSHOT) branch

build.gradle

@@ -0,0 +1,17 @@
+buildscript {
+    repositories {
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.10'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+
+    group = 'org.bitcoinj'
+}

core/build.gradle

@@ -0,0 +1,62 @@
+apply plugin: 'java'
+apply plugin: 'com.google.protobuf'
+apply plugin: 'maven'
+apply plugin: 'eclipse'
+
+version = '0.15.8.bisq.14'
+archivesBaseName = 'bitcoinj-core'
+eclipse.project.name = 'bitcoinj-core'
+
+dependencies {
+    compile 'org.bouncycastle:bcprov-jdk15to18:1.63'
+    implementation 'com.google.guava:guava:28.2-android'
+    compile 'com.google.protobuf:protobuf-java:3.6.1'
+    implementation 'com.squareup.okhttp3:okhttp:3.12.8'
+    implementation 'org.slf4j:slf4j-api:1.7.30'
+    implementation 'net.jcip:jcip-annotations:1.0'
+    compileOnly 'org.fusesource.leveldbjni:leveldbjni-all:1.8'
+    testImplementation 'junit:junit:4.13'
+    testImplementation 'org.easymock:easymock:3.2'
+    testImplementation 'com.fasterxml.jackson.core:jackson-databind:2.5.2'
+    testImplementation 'org.slf4j:slf4j-jdk14:1.7.30'
+    testImplementation 'com.h2database:h2:1.3.167'
+    testImplementation 'org.fusesource.leveldbjni:leveldbjni-all:1.8'
+}
+
+sourceCompatibility = 1.7
+compileJava.options.encoding = 'UTF-8'
+compileTestJava.options.encoding = 'UTF-8'
+javadoc.options.encoding = 'UTF-8'
+
+protobuf {
+    protoc {
+        artifact = 'com.google.protobuf:protoc:3.6.1'
+    }
+    generatedFilesBaseDir = new File(projectDir, '/src') // workaround for '$projectDir/src'
+}
+
+test {
+    exclude 'org/bitcoinj/core/PeerTest*'
+    exclude 'org/bitcoinj/core/TransactionBroadcastTest*'
+    exclude 'org/bitcoinj/net/NetworkAbstractionTests*'
+    exclude 'org/bitcoinj/protocols/channels/ChannelConnectionTest*'
+    testLogging {
+        events "failed"
+        exceptionFormat "full"
+    }
+}
+
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    classifier = 'javadoc'
+    from javadoc.destinationDir
+}
+
+task sourcesJar(type: Jar, dependsOn: classes) {
+    classifier = 'sources'
+    from sourceSets.main.allSource
+}
+
+artifacts {
+    archives sourcesJar
+    archives javadocJar
+}