| 1 | 1. Introduction |
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| 2 | |
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| 3 | This document describes a protocol for interacting with Transmission |
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| 4 | sessions remotely. |
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| 5 | |
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| 6 | 1.1 Terminology |
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| 7 | |
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| 8 | The JSON terminology in RFC 4627 is used. |
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| 9 | |
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| 10 | In benc terms, a JSON "array" is equivalent to a benc list, |
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| 11 | a JSON "object" is equivalent to a benc dictionary, |
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| 12 | and a JSON object's "keys" are the dictionary's string keys. |
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| 13 | |
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| 14 | 2. Message Format |
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| 15 | |
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| 16 | Messages are formatted in a subset of JSON easily represented |
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| 17 | as bencoded data. Arrays, objects, strings, and whole numbers |
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| 18 | all have one-to-one mappings between JSON and benc. |
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| 19 | |
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| 20 | Booleans and floating-point numbers are also used in the JSON messages. |
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| 21 | Those two types aren't native to benc, so they're encoded this way: |
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| 22 | Booleans are encoded as numbers where 0 is false and 1 is true. |
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| 23 | Floating-point numbers are represented as strings. |
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| 24 | |
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| 25 | Messages are formatted as objects. There are two types: |
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| 26 | requests (described in 2.1) and responses (described in 2.2). |
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| 27 | |
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| 28 | All text MUST be UTF-8 encoded. |
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| 29 | |
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| 30 | 2.1. Requests |
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| 31 | |
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| 32 | Requests support three keys: |
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| 33 | |
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| 34 | (1) A required "method" string telling the name of the method to invoke |
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| 35 | (2) An optional "arguments" object of key/value pairs |
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| 36 | (3) An optional "tag" number used by clients to track responses. |
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| 37 | If provided by a request, the response MUST include the same tag. |
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| 38 | |
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| 39 | 2.2. Responses |
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| 40 | |
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| 41 | Reponses support three keys: |
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| 42 | |
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| 43 | (1) A required "result" string whose value MUST be "success" on success, |
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| 44 | or an error string on failure. |
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| 45 | (2) An optional "arguments" object of key/value pairs |
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| 46 | (3) An optional "tag" number as described in 2.1. |
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| 47 | |
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| 48 | 2.3. Transport Mechanism |
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| 49 | |
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| 50 | HTTP POSTing a JSON-encoded request is the preferred way of communicating |
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| 51 | with a Transmission RPC server; however, a simple notation also exists |
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| 52 | for sending requests in the query portion of a URL. |
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| 53 | |
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| 54 | The URL notation works as follows: |
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| 55 | (1) Any key not "tag" or "method" is treated as an argument. |
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| 56 | (2) The "arguments" key isn't needed, since data isn't nested. |
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| 57 | (3) If the value in a key/value pair can be parsed as a number, then it is. |
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| 58 | Otherwise if it can be parsed as an array of numbers, then it is. |
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| 59 | Otherwise, it's parsed as a string. |
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| 60 | |
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| 61 | Examples: |
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| 62 | ?method=torrent-start&ids=1,2 |
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| 63 | ?method=session-set&speed-limit-down=50&speed-limit-down-enabled=1 |
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| 64 | |
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| 65 | 3. Torrent Requests |
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| 66 | |
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| 67 | 3.1. Torrent Action Requests |
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| 68 | |
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| 69 | Method name | libtransmission function |
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| 70 | --------------------+------------------------------------------------- |
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| 71 | "torrent-remove" | tr_torrentRemove |
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| 72 | "torrent-start" | tr_torrentStart |
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| 73 | "torrent-stop" | tr_torrentStop |
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| 74 | "torrent-verify" | tr_torrentVerify |
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| 75 | |
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| 76 | Request arguments: "ids", a list of torrent id numbers, sha1 hash strings, |
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| 77 | or both. These are the torrents that the request will |
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| 78 | be applied to. If "ids" is ommitted, the request is |
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| 79 | applied to all torrents. |
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| 80 | |
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| 81 | Response arguments: none |
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| 82 | |
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| 83 | 3.2. Torrent Mutators |
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| 84 | |
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| 85 | Method name: "torrent-set" |
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| 86 | |
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| 87 | Request arguments: |
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| 88 | |
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| 89 | string | value type & description |
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| 90 | ---------------------------+------------------------------------------------- |
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| 91 | "files-wanted" | array indices of file(s) to download |
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| 92 | "files-unwanted" | array indices of file(s) to not download |
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| 93 | "ids" | array torrent list, as described in 3.1 |
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| 94 | "peer-limit" | number maximum number of peers |
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| 95 | "priority-high" | array indices of high-priority file(s) |
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| 96 | "priority-low" | array indices of low-priority file(s) |
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| 97 | "priority-normal" | array indices of normal-priority file(s) |
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| 98 | "speed-limit-down" | number maximum download speed (in K/s) |
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| 99 | "speed-limit-down-enabled" | 'boolean' true if the download speed is limited |
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| 100 | "speed-limit-up" | number maximum upload speed (in K/s) |
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| 101 | "speed-limit-up-enabled" | 'boolean' true if the upload speed is limited |
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| 102 | |
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| 103 | Just as an empty "ids" value is shorthand for "all ids", using an empty array |
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| 104 | for "files-wanted", "files-unwanted", "priority-high", "priority-low", or |
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| 105 | "priority-normal" is shorthand for saying "all files". |
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| 106 | |
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| 107 | Response arguments: none |
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| 108 | |
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| 109 | 3.3. Torrent Accessors |
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| 110 | |
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| 111 | Method name: "torrent-get". |
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| 112 | |
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| 113 | Request arguments: |
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| 114 | |
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| 115 | (1) An opional "ids" array as described in 3.1. |
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| 116 | (2) A required "fields" array of keys. (see list below) |
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| 117 | |
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| 118 | Response arguments: |
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| 119 | |
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| 120 | (1) A "torrents" array of objects, each of which contains |
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| 121 | the key/value pairs matching the request's "fields" argument. |
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| 122 | |
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| 123 | key | type | source |
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| 124 | -----------------------+--------------------------------------+--------- |
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| 125 | activityDate | number | tr_stat |
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| 126 | addedDate | number | tr_stat |
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| 127 | announceResponse | string | tr_stat |
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| 128 | announceURL | string | tr_stat |
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| 129 | comment | string | tr_info |
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| 130 | corruptEver | number | tr_stat |
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| 131 | creator | string | tr_info |
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| 132 | dateCreated | number | tr_info |
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| 133 | desiredAvailable | number | tr_stat |
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| 134 | doneDate | number | tr_stat |
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| 135 | downloadedEver | number | tr_stat |
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| 136 | downloadLimitMode | number | tr_torrent |
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| 137 | downloadLimit | number | tr_torrent |
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| 138 | error | number | tr_stat |
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| 139 | errorString | number | tr_stat |
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| 140 | eta | number | tr_stat |
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| 141 | files | array (see below) | n/a |
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| 142 | hashString | string | tr_info |
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| 143 | haveUnchecked | number | tr_stat |
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| 144 | haveValid | number | tr_stat |
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| 145 | id | number | tr_torrent |
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| 146 | isPrivate | 'boolean | tr_torrent |
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| 147 | lastAnnounceTime | number | tr_stat |
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| 148 | lastScrapeTime | number | tr_stat |
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| 149 | leechers | number | tr_stat |
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| 150 | leftUntilDone | number | tr_stat |
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| 151 | manualAnnounceTime | number | tr_stat |
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| 152 | maxConnectedPeers | number | tr_torrent |
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| 153 | name | string | tr_info |
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| 154 | nextAnnounceTime | number | tr_stat |
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| 155 | nextScrapeTime | number | tr_stat |
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| 156 | peers | array (see below) | n/a |
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| 157 | peersConnected | number | tr_stat |
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| 158 | peersFrom | object (see below) | n/a |
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| 159 | peersGettingFromUs | number | tr_stat |
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| 160 | peersKnown | number | tr_stat |
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| 161 | peersSendingToUs | number | tr_stat |
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| 162 | pieceCount | tnumber | tr_info |
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| 163 | pieceSize | tnumber | tr_info |
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| 164 | priorities | array (see below) | n/a |
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| 165 | rateDownload (B/s) | number | tr_stat |
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| 166 | rateUpload (B/s) | number | tr_stat |
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| 167 | recheckProgress | 'double' | tr_stat |
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| 168 | scrapeResponse | string | tr_stat |
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| 169 | scrapeURL | string | tr_stat |
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| 170 | seeders | number | tr_stat |
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| 171 | sizeWhenDone | number | tr_stat |
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| 172 | startDate | number | tr_stat |
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| 173 | status | number | tr_stat |
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| 174 | swarmSpeed (K/s) | number | tr_stat |
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| 175 | timesCompleted | number | tr_stat |
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| 176 | trackers | array (see below) | n/a |
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| 177 | totalSize | number | tr_info |
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| 178 | uploadedEver | number | tr_stat |
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| 179 | uploadLimitMode | number | tr_torrent |
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| 180 | uploadLimit | number | tr_torrent |
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| 181 | uploadRatio | 'double' | tr_stat |
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| 182 | wanted | array (see below) | n/a |
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| 183 | webseeds | array (see below) | n/a |
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| 184 | webseedsSendingToUs | number | tr_stat |
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| 185 | | | |
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| 186 | | | |
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| 187 | -----------------------+--------------------------------------+ |
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| 188 | files | array of objects, each containing: | |
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| 189 | +-------------------------+------------+ |
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| 190 | | key | type | |
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| 191 | | bytesCompleted | number | tr_torrent |
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| 192 | | length | number | tr_info |
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| 193 | | name | string | tr_info |
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| 194 | -----------------------+--------------------------------------+ |
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| 195 | peers | array of objects, each containing: | |
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| 196 | +-------------------------+------------+ |
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| 197 | | address | string | tr_peer_stat |
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| 198 | | clientName | string | tr_peer_stat |
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| 199 | | clientIsChoked | 'boolean' | tr_peer_stat |
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| 200 | | clientIsInterested | 'boolean' | tr_peer_stat |
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| 201 | | isDownloadingFrom | 'boolean' | tr_peer_stat |
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| 202 | | isEncrypted | 'boolean' | tr_peer_stat |
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| 203 | | isIncoming | 'boolean' | tr_peer_stat |
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| 204 | | isUploadingTo | 'boolean' | tr_peer_stat |
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| 205 | | peerIsChoked | 'boolean' | tr_peer_stat |
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| 206 | | peerIsInterested | 'boolean' | tr_peer_stat |
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| 207 | | port | number | tr_peer_stat |
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| 208 | | progress | 'double' | tr_peer_stat |
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| 209 | | rateToClient (B/s) | number | tr_peer_stat |
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| 210 | | rateToPeer (B/s) | number | tr_peer_stat |
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| 211 | -----------------------+--------------------------------------+ |
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| 212 | peersFrom | an object containing: | |
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| 213 | +-------------------------+------------+ |
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| 214 | | fromCache | number | tr_stat |
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| 215 | | fromIncoming | number | tr_stat |
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| 216 | | fromPex | number | tr_stat |
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| 217 | | fromTracker | number | tr_stat |
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| 218 | -----------------------+--------------------------------------+ |
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| 219 | priorities | an array of tr_info.filecount | tr_info |
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| 220 | | numbers. each is the tr_priority_t | |
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| 221 | | mode for the corresponding file. | |
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| 222 | -----------------------+--------------------------------------+ |
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| 223 | trackers | array of objects, each containing: | |
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| 224 | +-------------------------+------------+ |
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| 225 | | announce | string | tr_info |
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| 226 | | scrape | string | tr_info |
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| 227 | | tier | number | tr_info |
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| 228 | -----------------------+--------------------------------------+ |
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| 229 | wanted | an array of tr_info.fileCount | tr_info |
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| 230 | | 'booleans' true if the corresponding | |
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| 231 | | file is to be downloaded. | |
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| 232 | -----------------------+--------------------------------------+ |
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| 233 | webseeds | an array of strings: | |
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| 234 | +-------------------------+------------+ |
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| 235 | | webseed | string | tr_info |
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| 236 | +-------------------------+------------+ |
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| 237 | |
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| 238 | Example: |
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| 239 | |
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| 240 | Say we want to get the name and total size of torrents #7 and #10. |
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| 241 | |
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| 242 | Request: |
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| 243 | |
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| 244 | { |
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| 245 | "arguments": { |
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| 246 | "fields": [ "id", "name", "totalSize" ] |
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| 247 | }, |
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| 248 | "method": "torrent-get", |
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| 249 | "tag": 39693 |
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| 250 | } |
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| 251 | |
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| 252 | |
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| 253 | Response: |
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| 254 | |
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| 255 | { |
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| 256 | "arguments": { |
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| 257 | "torrents": [ |
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| 258 | { |
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| 259 | "id": 10, |
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| 260 | "name": "Fedora x86_64 DVD", |
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| 261 | "totalSize", 34983493932, |
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| 262 | }, |
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| 263 | { |
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| 264 | "id": 7, |
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| 265 | "name": "Ubuntu x86_64 DVD", |
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| 266 | "totalSize", 9923890123, |
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| 267 | } |
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| 268 | ] |
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| 269 | }, |
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| 270 | "result": "success", |
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| 271 | "tag": 39693 |
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| 272 | } |
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| 273 | |
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| 274 | 3.4. Adding a Torrent |
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| 275 | |
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| 276 | Method name: "torrent-add" |
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| 277 | |
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| 278 | Request arguments: |
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| 279 | |
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| 280 | key | value type & description |
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| 281 | -------------------+------------------------------------------------- |
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| 282 | "download-dir" | string path to download the torrent to |
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| 283 | "filename" | string location of the .torrent file |
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| 284 | "metainfo" | string base64-encoded .torrent content |
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| 285 | "paused" | 'boolean' if true, don't start the torrent |
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| 286 | "peer-limit" | number maximum number of peers |
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| 287 | |
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| 288 | Either "filename" OR "metainfo" MUST be included. |
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| 289 | All other arguments are optional. |
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| 290 | |
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| 291 | Response arguments: on success, a "torrent-added" object in the |
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| 292 | form of one of 3.3's tr_info objects with the |
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| 293 | fields for id, name, and hashString. |
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| 294 | |
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| 295 | |
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| 296 | 4. Session Requests |
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| 297 | |
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| 298 | 4.1. Session Arguments |
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| 299 | |
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| 300 | string | value type & description |
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| 301 | ---------------------------+------------------------------------------------- |
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| 302 | "encryption" | string "required", "preferred", "tolerated" |
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| 303 | "download-dir" | string default path to download torrents |
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| 304 | "peer-limit" | number maximum global number of peers |
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| 305 | "pex-allowed" | 'boolean' true means allow pex in public torrents |
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| 306 | "port" | number port number |
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| 307 | "port-forwarding-enabled" | 'boolean' true means enabled |
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| 308 | "speed-limit-down" | number max global download speed (in K/s) |
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| 309 | "speed-limit-down-enabled" | 'boolean' true means enabled |
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| 310 | "speed-limit-up" | number max global upload speed (in K/s) |
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| 311 | "speed-limit-up-enabled" | 'boolean' true means enabled |
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| 312 | "version" | string long version string "$version ($revision)" |
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| 313 | |
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| 314 | |
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| 315 | 4.1.1. Mutators |
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| 316 | |
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| 317 | Method name: "session-set" |
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| 318 | Request arguments: one or more of 4.1's arguments, except "version" |
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| 319 | Response arguments: none |
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| 320 | |
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| 321 | 4.1.2. Accessors |
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| 322 | |
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| 323 | Method name: "session-get" |
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| 324 | Request arguments: none |
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| 325 | Response arguments: all of 4.1's arguments |
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| 326 | |
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| 327 | 4.2. Session Statistics |
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| 328 | |
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| 329 | Method name: "session-stats" |
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| 330 | |
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| 331 | Request arguments: none |
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| 332 | |
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| 333 | Response arguments: |
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| 334 | |
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| 335 | string | value type |
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| 336 | ---------------------------+------------------------------------------------- |
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| 337 | "activeTorrentCount" | number |
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| 338 | "downloadSpeed" | number |
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| 339 | "pausedTorrentCount" | number |
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| 340 | "torrentCount" | number |
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| 341 | "uploadSpeed" | number |
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| 342 | |
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| 343 | |
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