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| 26 | |
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| 27 | <P> |
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| 28 | This document describes the known bit allocations and message IDs for |
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| 29 | the BitTorrent protocol. To request a bit allocation contact |
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| 30 | editor@bittorrent.org. Contact the same address if you are aware of |
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| 31 | any omissions. |
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| 32 | </P> |
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| 33 | |
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| 34 | <H2> 1. Reserved Bit Allocations </H2> |
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| 35 | |
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| 36 | <pre> |
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| 37 | reserved[0] |
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| 38 | 0x80 Azureus Messaging Protocol |
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| 39 | |
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| 40 | reserved[5] |
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| 41 | 0x10 LTEP (LibTorrent Extension Protocol) |
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| 42 | |
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| 43 | reserved[7] |
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| 44 | 0x01 BitTorrent DHT |
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| 45 | 0x04 suggest, haveall, havenone, reject request, and allow fast extensions |
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| 46 | </pre> |
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| 47 | |
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| 48 | <H2> 2. Reserved Message IDs </H2> |
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| 49 | |
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| 50 | <pre> |
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| 51 | Core Protocol: |
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| 52 | 0x00 choke |
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| 53 | 0x01 unchoke |
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| 54 | 0x02 interested |
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| 55 | 0x03 not interested |
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| 56 | 0x04 have |
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| 57 | 0x05 bitfield |
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| 58 | 0x06 request |
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| 59 | 0x07 piece |
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| 60 | 0x08 cancel |
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| 61 | 0x09 port |
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| 62 | |
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| 63 | </pre> |
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| 64 | |
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| 65 | <H3> 2.1 Fast Extensions </H3> |
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| 66 | |
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| 67 | <pre> |
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| 68 | 0x0D suggest |
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| 69 | 0x0E have all |
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| 70 | 0x0F have none |
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| 71 | 0x10 reject request |
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| 72 | 0x11 allowed fast |
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| 73 | </pre> |
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| 74 | |
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| 75 | <H3> Additional IDs used in deployed clients </H3> |
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| 76 | <pre> |
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| 77 | 0x14 LTEP Handshake (implemented in libtorrent, uTorrent,...) |
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| 78 | </pre> |
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