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| 16 | <h1><a href="../index.html">BitTorrent<span>.org</span></a></h1> |
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| 20 | <li><a href="../index.html">Home</a></li> |
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| 21 | <li><a href="../introduction.html">For Users</a></li> |
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| 22 | <li><span>For Developers</span></li> |
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| 27 | <!-- ### Begin Content ### --> |
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| 28 | <div id="second"> |
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| 29 | |
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| 30 | |
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| 31 | |
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| 32 | <table class="rfc2822 docutils field-list" frame="void" rules="none"> |
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| 33 | <col class="field-name" /> |
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| 34 | <col class="field-body" /> |
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| 35 | <tbody valign="top"> |
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| 36 | <tr class="field"><th class="field-name">BEP:</th><td class="field-body">4</td> |
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| 37 | </tr> |
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| 38 | <tr class="field"><th class="field-name">Title:</th><td class="field-body">Assigned Numbers</td> |
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| 39 | </tr> |
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| 40 | <tr class="field"><th class="field-name">Version:</th><td class="field-body">10561</td> |
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| 41 | </tr> |
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| 42 | <tr class="field"><th class="field-name">Last-Modified:</th><td class="field-body"><a class="reference external" href="https://svn.bittorrent.com/trac.cgi/browser/dotorg/trunk/html/beps/bep_0004.rst">2008-02-06 10:01:00 -0800 (Wed, 06 Feb 2008)</a></td> |
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| 43 | </tr> |
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| 44 | <tr class="field"><th class="field-name">Author:</th><td class="field-body">David Harrison</td> |
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| 45 | </tr> |
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| 46 | <tr class="field"><th class="field-name">Status:</th><td class="field-body">Active</td> |
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| 47 | </tr> |
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| 48 | <tr class="field"><th class="field-name">Type:</th><td class="field-body">Process</td> |
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| 49 | </tr> |
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| 50 | <tr class="field"><th class="field-name">Created:</th><td class="field-body">10-Jan-2008</td> |
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| 51 | </tr> |
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| 52 | <tr class="field"><th class="field-name">Post-History:</th><td class="field-body"></td> |
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| 53 | </tr> |
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| 54 | </tbody> |
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| 55 | </table> |
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| 56 | <hr /> |
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| 57 | <div class="contents topic" id="contents"> |
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| 58 | <p class="topic-title first">Contents</p> |
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| 59 | <ul class="simple"> |
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| 60 | <li><a class="reference internal" href="#reserved-bit-allocations" id="id2">Reserved Bit Allocations</a></li> |
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| 61 | <li><a class="reference internal" href="#reserved-message-ids" id="id3">Reserved Message IDs</a></li> |
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| 62 | </ul> |
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| 63 | </div> |
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| 64 | <p>This document describes the known bit allocations and message IDs for |
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| 65 | the BitTorrent protocol. To request a bit allocation contact |
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| 66 | <a class="reference external" href="mailto:editor%40bittorrent.org">editor<span>@</span>bittorrent<span>.</span>org</a>. Contact the same address if you are aware of |
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| 67 | any omissions.</p> |
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| 68 | <div class="section" id="reserved-bit-allocations"> |
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| 69 | <h1>Reserved Bit Allocations</h1> |
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| 70 | <pre class="literal-block"> |
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| 71 | reserved[0] |
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| 72 | 0x80 Azureus Messaging Protocol |
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| 73 | |
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| 74 | reserved[5] |
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| 75 | 0x10 LTEP (Libtorrent Extension Protocol) |
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| 76 | |
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| 77 | reserved[7] |
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| 78 | 0x01 BitTorrent DHT |
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| 79 | 0x04 suggest, haveall, havenone, reject request, and allow fast extensions |
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| 80 | </pre> |
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| 81 | </div> |
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| 82 | <div class="section" id="reserved-message-ids"> |
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| 83 | <h1>Reserved Message IDs</h1> |
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| 84 | <pre class="literal-block"> |
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| 85 | Core Protocol: |
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| 86 | 0x00 choke |
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| 87 | 0x01 unchoke |
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| 88 | 0x02 interested |
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| 89 | 0x03 not interested |
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| 90 | 0x04 have |
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| 91 | 0x05 bitfield |
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| 92 | 0x06 request |
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| 93 | 0x07 piece |
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| 94 | 0x08 cancel |
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| 95 | |
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| 96 | DHT Extension: |
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| 97 | 0x09 port |
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| 98 | |
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| 99 | Fast Extensions: |
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| 100 | 0x0D suggest |
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| 101 | 0x0E have all |
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| 102 | 0x0F have none |
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| 103 | 0x10 reject request |
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| 104 | 0x11 allowed fast |
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| 105 | |
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| 106 | Additional IDs used in deployed clients: |
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| 107 | 0x14 LTEP Handshake (implemented in libtorrent, uTorrent,...) |
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| 108 | </pre> |
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