111 lines
5.2 KiB
HTML
111 lines
5.2 KiB
HTML
<?xml version="1.0" encoding="utf-8" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" />
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<title>libtorrent python binding</title>
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<meta name="author" content="Arvid Norberg, arvid@rasterbar.com" />
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<link rel="stylesheet" href="style.css" type="text/css" />
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</head>
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<body>
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<div class="document" id="libtorrent-python-binding">
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<h1 class="title">libtorrent python binding</h1>
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<table class="docinfo" frame="void" rules="none">
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<col class="docinfo-name" />
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<col class="docinfo-content" />
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<tbody valign="top">
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<tr><th class="docinfo-name">Author:</th>
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<td>Arvid Norberg, <a class="last reference external" href="mailto:arvid@rasterbar.com">arvid@rasterbar.com</a></td></tr>
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</tbody>
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</table>
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<div class="contents topic" id="table-of-contents">
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<p class="topic-title first">Table of contents</p>
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<ul class="simple">
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<li><a class="reference internal" href="#building" id="id1">building</a></li>
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<li><a class="reference internal" href="#using-libtorrent-in-python" id="id2">using libtorrent in python</a></li>
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</ul>
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</div>
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<div class="section" id="building">
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<h1>building</h1>
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<p>Building the libtorrent python bindings will produce a shared library (DLL)
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which is a python module that can be imported in a python program.</p>
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<p>The only supported build system for the bindings are currently boost build. To
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set up your build environment, you need to add some settings to your
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<tt class="docutils literal"><span class="pre">$BOOST_BUILD_PATH/user-config.jam</span></tt>.</p>
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<p>Make sure your user config contains the following line:</p>
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<pre class="literal-block">
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using python : 2.3 ;
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</pre>
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<p>Set the version to the version of python you have installed or want to use. If
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you've installed python in a non-standard location, you have to add the prefix
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path used when you installed python as a second option. Like this:</p>
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<pre class="literal-block">
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using python : 2.3 : /usr ;
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</pre>
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<p>The bindings require <em>at least</em> python version 2.2.</p>
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<p>For more information on how to install and set up boost-build, see the
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<a class="reference external" href="building.html#step-2-setup-bbv2">building libtorrent</a> section.</p>
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<p>Once you have boost-build set up, you cd to the <tt class="docutils literal"><span class="pre">bindings/python</span></tt>
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directory and invoke <tt class="docutils literal"><span class="pre">bjam</span></tt> with the apropriate settings. For the available
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build variants, see <a class="reference external" href="building.html#step-3-building-libtorrent">libtorrent build options</a>.</p>
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<p>For example:</p>
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<pre class="literal-block">
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$ bjam dht-support=on boost=source release link=static
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</pre>
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<p>On Mac OS X, this will produce the following python module:</p>
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<pre class="literal-block">
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bin/darwin-4.0/release/dht-support-on/link-static/logging-none/threading-multi/libtorrent.so
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</pre>
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</div>
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<div class="section" id="using-libtorrent-in-python">
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<h1>using libtorrent in python</h1>
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<p>The python interface is nearly identical to the C++ interface. Please refer to
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the <a class="reference external" href="manual.html">main library reference</a>. The main differences are:</p>
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<dl class="docutils">
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<dt>asio::tcp::endpoint</dt>
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<dd>The endpoint type is represented as a tuple of a string (as the address) and an int for
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the port number. E.g. <tt class="docutils literal"><span class="pre">('127.0.0.1',</span> <span class="pre">6881)</span></tt> represents the localhost port 6881.</dd>
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<dt>libtorrent::time_duration</dt>
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<dd>The time duration is represented as a number of seconds in a regular integer.</dd>
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</dl>
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<p>The following functions takes a reference to a container that is filled with
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entries by the function. The python equivalent of these functions instead returns
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a list of entries.</p>
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<ul class="simple">
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<li>torrent_handle::get_peer_info</li>
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<li>torrent_handle::file_progress</li>
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<li>torrent_handle::get_download_queue</li>
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<li>torrent_handle::piece_availability</li>
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</ul>
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<p>For an example python program, see <tt class="docutils literal"><span class="pre">client.py</span></tt> in the <tt class="docutils literal"><span class="pre">bindings/python</span></tt>
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directory.</p>
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<p>A very simple example usage of the module would be something like this:</p>
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<pre class="literal-block">
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import libtorrent as lt
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import time
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ses = lt.session()
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ses.listen_on(6881, 6891)
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e = lt.bdecode(open("test.torrent", 'rb').read())
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info = lt.torrent_info(e)
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h = ses.add_torrent(info, "./", storage_mode=storage_mode_sparse)
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while (not h.is_seed()):
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s = h.status()
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state_str = ['queued', 'checking', 'connecting', 'downloading metadata', \
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'downloading', 'finished', 'seeding', 'allocating']
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print '%.2f%% complete (down: %.1f kb/s up: %.1f kB/s peers: %d) %s' % \
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(s.progress * 100, s.download_rate / 1000, s.upload_rate / 1000, \
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s.num_peers, state_str[s.state])
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time.sleep(1)
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</pre>
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</div>
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</div>
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</body>
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</html>
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