frostwire-jlibtorrent

A swig Java interface for libtorrent by the makers of FrostWire.

Develop libtorrent based apps with the joy of coding in Java.

Using

Download the latest JAR or get the dependency via Maven:

<dependency>
  <groupId>com.frostwire</groupId>
  <artifactId>jlibtorrent</artifactId>
  <version>1.1.0.9</version>
</dependency>

or Gradle:

compile 'com.frostwire:jlibtorrent:1.1.0.9'

Note that there are multiple version of jlibtorrent for different platforms: jlibtorrent, jlibtorrent-windows, jlibtorrent-linux, jlibtorrent-macosx and jlibtorrent-android. These are all different artifacts.

Here's a simple example of how to create a .torrent downloader using frostwire-jlibtorrent.

public final class DownloadTorrent {

    public static void main(String[] args) throws Throwable {

        // comment this line for a real application
        args = new String[]{"/Users/aldenml/Downloads/Kellee_Maize_The_5th_Element_FrostClick_FrostWire_MP3_April_14_2014.torrent"};

        File torrentFile = new File(args[0]);

        System.out.println("Using libtorrent version: " + LibTorrent.version());

        final Session s = new Session();

        final TorrentHandle th = s.addTorrent(torrentFile, torrentFile.getParentFile());

        final CountDownLatch signal = new CountDownLatch(1);

        s.addListener(new TorrentAlertAdapter(th) {
            @Override
            public void onBlockFinished(BlockFinishedAlert alert) {
                int p = (int) (th.getStatus().getProgress() * 100);
                System.out.println("Progress: " + p);
            }

            @Override
            public void onTorrentFinished(TorrentFinishedAlert alert) {
                System.out.print("Torrent finished");
                signal.countDown();
            }
        });

        signal.await();
    }
}

======= frostwire-jlibtorrent is currently compatible with libtorrent-rasterbar-1.0.2

Building

Requirements

export BOOST_ROOT=//boost_1_58_0 export LIBTORRENT_ROOT=//libtorrent export JDK_ROOT= export NDK_ROOT= Only for Windows and Android export OPENSSL_ROOT=/openssl-1.0.2c

OpenSSL

For android, read this page https://wiki.openssl.org/index.php/Android and install it for arm, arm64, x86, x86_64 but make this changes:

The setup in this project is to compile in Mac OS X. Use the file openssl-android-env.sh in this repo instead and source it (no execute it). Define an env variable OPENSSL_ROOT pointing to the extracted sources and create the folders android-arm, android-x86. Use this folders (absolute path) in each --openssldir= during config.

perl -pi -e 's/install: all install_docs install_sw/install: install_docs install_sw/g' Makefile.org

./config no-ssl2 no-ssl3 no-comp no-hw no-engine no-shared no-psk no-srp no-err --openssldir=pwd/android-arm or ./config -m32 no-ssl2 no-ssl3 no-comp no-hw no-engine no-shared no-psk no-srp no-err --openssldir=pwd/android-x86

make depend $ make all

make install CC=$ANDROID_TOOLCHAIN/arm-linux-androideabi-gcc RANLIB=$ANDROID_TOOLCHAIN/arm-linux-androideabi-ranlib make install CC=$ANDROID_TOOLCHAIN/i686-linux-android-gcc RANLIB=$ANDROID_TOOLCHAIN/i686-linux-android-ranlib

You will have to build libtorrent first on your system, we've included build scripts in the build folder.

If you have not built libtorrent yet, you can get libtorrent sources from sourceforge.

If you are building for Windows, we suggest you use boost 1.55, boost 1.56 introduced severe bugs in Windows networking.

Building the shared library

make libtorrent, and then, go to the build/ folder of our project and execute the run_swig.sh script and then the build_xxx.sh script corresponding to the OS you want to build for.

The result will be a libjlibtorrent.dylib, or libjlibtorrent.so or jlibtorrent.dll which you can then use on your Java project along with the Java sources of the frostwire-jlibtorrent api. Make sure the .dylib, .so or .dll is on your project's java lib path.

You can always clone the project to your development environment and add it to the build path of your project as a dependency (which would help us in the event you find a bug and you submit a pull request), or copy the sources directly in your project source folder, however you can always just create the frostwire-jlibtorrent.jar and add it to your buildpath and classpath by using the gradle script in the scripts folder.

Building the frostwire-jlibtorrent.jar

inside the build/ folder just invoke gradle build

you will find the resulting frostwire-jlibtorrent.jar at build/build/libs/frostwire-jlibtorrent.jar.

Strip shared libraries

Mac OS X strip -S -x file.dylib

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License

This software is offered under the MIT License, available here.