[erlang-questions] [ANN] Release of etorrent v1.2.0

Alain O'Dea <>
Sun Dec 12 00:37:07 CET 2010


Cool!  I've been following your work on etorrent since sometime in
2008.  It is a really cool project and you've derived some great
wisdom from it on your blog :)

On Saturday, December 11, 2010, Jesper Louis Andersen
<> wrote:
> Hi all,
>
> I am happy to announce the release of Etorrent version 1.2.0 to the
> world. For those who do not know the project, here is an erlang term
> describing it:
>
> [{name, "Etorrent"},
>  {version, "v1.2.0"},
>  {maintainer, "Jesper Louis Andersen <>"},
>  {synopsis,
>   "Etorrent is a bittorrent client implementation in Erlang"
>   "focusing on fault-tolerance"},
>  {homepage, "http://github.com/jlouis/etorrent"},
>  {build_system, rebar},
>  {license, bsd2, "COPYING"},
>  {stability, stable},
>  {tested, [otp_r14b, otp_r14b01, otp_r13b04]},
>  {repository,
>    [{release,
>      {etorrent, ".*", {git, "git://github.com/jlouis/etorrent.git", "v1.2.0"}}},
>     {development,
>      {etorrent, ".*", {git, "git://github.com/jlouis/etorrent.git",
> "master"}}}]}
> ].
>
> For INSTALLATION instructions, read the README.md file provided with
> the repository (it is also on the homepage mentioned in the Erlang
> term above).
>
> This release welcomes an additional developer, Magnus Klaar, who has
> written a new IO backend and has provided Etorrent with a working
> Distributed Hash Table implementation. In addition, Magnus has sparked
> testing in Etorrent. We now test many more functions than we did
> earlier. We do this by a combination of EUnit and Erlang Quickcheck
> mini (thanks, Quviq).
>
> In addition to Magnus work, we now support more BitTorrent Protocol
> Extensions (BEPs) and our UI code has been improved so we are better
> at serving information to the user. Finally, we have replaced SASL
> with riak_err (from Basho tech.) to battle problems with SASL eating
> up all memory on errors. Also from Basho, we have adapted rebar as a
> build system. As a result, we now have even better configuration file
> support.
>
> NEWS follows:
>
> Version 1.2.0:
>
> This version sees a number of new highlights:
>
>  Highlights:
>    * (Magnus Klaar) A complete DHT implementation. This is outstanding
>      work. Note that it should be disabled if you use private
>      trackers. We don't heed the private-flag yet (BEP-27)
>    * (Magnus Klaar) A completely new disk IO layer which is more parallel
>      than the old one. Needless to say, it is much faster.
>    * Further work via rebars release handler now lets us build proper releases,
>      for production and/or development (See the README.md file for
>      instructions).
>    * Support for BEP-15: Udp tracker protocol
>    * Support for BEP-12: Multitracker protocol
>    * Numerous improvement to the webUI.
>    * Etorrent now persists the amount of upload and download over sessions.
>      This fixes correct ratios even across stops/starts of etorrent.
>    * Use the riak_err error handler. This plugs a bug where death of many
>      processes would make SASL use too much memory.
>
>  Fixes:
>    * Remove mnesia from the code base. The new system is running entirely on
>      ETS.
>    * Performance improvements in hot parts of the code.
>    * Begin adding tests to the code, EUnit and Erlang QuickCheck mini.
>    * Add profiling via eprof as a tunable knob.
>    * Fix an outstanding bug in the choker code. Etorrent is now much better
>      at giving back.
>    * Fix a race condition on the gproc table.
>    * Improve supervisor tree shutdown
>    * Change the bcoding module to be less defensive and more erlang-like
>    * Change from uwiger/gproc to esl/gproc.
>    * Numerous fixes to robustness regarding slow disks.
>
>
> Version 1.1.2:
>
> Build system restructuring,
>
>   * This version adds support for a new build system. The README has
>     been updated with the information about how to build the software
>     now. Compared to earlier, we can now build a release which is a
>     stand-alone version of Erlang/OTP and etorrent bundled up nicely.
>   * Locations of log files has been vastly improved.
>   * Magnus Klaars work on DHT has been included. It is not prime-time
>     ready yet, but it is a start.
>
> Version 1.1.1:
>
> Small quick bugfix release,
>
>   * Include etorrent.erl, which was not tracked by the repository.
>
>
> Enjoy!
>
> --
> J.
>
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