406 lines
20 KiB
Plaintext
406 lines
20 KiB
Plaintext
1. Introduction
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This document describes a protocol for interacting with Transmission
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sessions remotely.
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1.1 Terminology
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The JSON terminology in RFC 4627 is used.
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In benc terms, a JSON "array" is equivalent to a benc list,
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a JSON "object" is equivalent to a benc dictionary,
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and a JSON object's "keys" are the dictionary's string keys.
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2. Message Format
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Messages are formatted in a subset of JSON easily represented
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as bencoded data. Arrays, objects, strings, and whole numbers
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all have one-to-one mappings between JSON and benc.
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Booleans and floating-point numbers are also used in the JSON messages.
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Those two types aren't native to benc, so they're encoded this way:
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Booleans are encoded as numbers where 0 is false and 1 is true.
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Floating-point numbers are represented as strings.
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Messages are formatted as objects. There are two types:
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requests (described in 2.1) and responses (described in 2.2).
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All text MUST be UTF-8 encoded.
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2.1. Requests
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Requests support three keys:
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(1) A required "method" string telling the name of the method to invoke
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(2) An optional "arguments" object of key/value pairs
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(3) An optional "tag" number used by clients to track responses.
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If provided by a request, the response MUST include the same tag.
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2.2. Responses
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Reponses support three keys:
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(1) A required "result" string whose value MUST be "success" on success,
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or an error string on failure.
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(2) An optional "arguments" object of key/value pairs
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(3) An optional "tag" number as described in 2.1.
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2.3. Transport Mechanism
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HTTP POSTing a JSON-encoded request is the preferred way of communicating
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with a Transmission RPC server; however, a simple notation also exists
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for sending requests in the query portion of a URL.
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The URL notation works as follows:
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(1) Any key not "tag" or "method" is treated as an argument.
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(2) The "arguments" key isn't needed, since data isn't nested.
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(3) If the value in a key/value pair can be parsed as a number, then it is.
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Otherwise if it can be parsed as an array of numbers, then it is.
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Otherwise, it's parsed as a string.
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Examples:
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?method=torrent-start&ids=1,2
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?method=session-set&speed-limit-down=50&speed-limit-down-enabled=1
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3. Torrent Requests
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3.1. Torrent Action Requests
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Method name | libtransmission function
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--------------------+-------------------------------------------------
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"torrent-start" | tr_torrentStart
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"torrent-stop" | tr_torrentStop
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"torrent-verify" | tr_torrentVerify
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Request arguments: "ids", a list of torrent id numbers, sha1 hash strings,
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or both. These are the torrents that the request will
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be applied to. If "ids" is ommitted, the request is
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applied to all torrents.
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Response arguments: none
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3.2. Torrent Mutators
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Method name: "torrent-set"
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Request arguments:
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string | value type & description
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---------------------------+-------------------------------------------------
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"files-wanted" | array indices of file(s) to download
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"files-unwanted" | array indices of file(s) to not download
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"ids" | array torrent list, as described in 3.1
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"peer-limit" | number maximum number of peers
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"priority-high" | array indices of high-priority file(s)
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"priority-low" | array indices of low-priority file(s)
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"priority-normal" | array indices of normal-priority file(s)
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"speed-limit-down" | number maximum download speed (in K/s)
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"speed-limit-down-enabled" | 'boolean' true if the download speed is limited
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"speed-limit-up" | number maximum upload speed (in K/s)
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"speed-limit-up-enabled" | 'boolean' true if the upload speed is limited
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Just as an empty "ids" value is shorthand for "all ids", using an empty array
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for "files-wanted", "files-unwanted", "priority-high", "priority-low", or
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"priority-normal" is shorthand for saying "all files".
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Response arguments: none
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3.3. Torrent Accessors
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Method name: "torrent-get".
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Request arguments:
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(1) An opional "ids" array as described in 3.1.
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(2) A required "fields" array of keys. (see list below)
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Response arguments:
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(1) A "torrents" array of objects, each of which contains
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the key/value pairs matching the request's "fields" argument.
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key | type | source
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-----------------------+--------------------------------------+---------
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activityDate | number | tr_stat
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addedDate | number | tr_stat
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announceResponse | string | tr_stat
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announceURL | string | tr_stat
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comment | string | tr_info
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corruptEver | number | tr_stat
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creator | string | tr_info
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dateCreated | number | tr_info
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desiredAvailable | number | tr_stat
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doneDate | number | tr_stat
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downloadDir | string | tr_torrent
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downloadedEver | number | tr_stat
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downloaders | number | tr_stat
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downloadLimitMode | number | tr_torrent
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downloadLimit | number | tr_torrent
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error | number | tr_stat
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errorString | number | tr_stat
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eta | number | tr_stat
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files | array (see below) | n/a
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hashString | string | tr_info
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haveUnchecked | number | tr_stat
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haveValid | number | tr_stat
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id | number | tr_torrent
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isPrivate | 'boolean | tr_torrent
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lastAnnounceTime | number | tr_stat
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lastScrapeTime | number | tr_stat
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leechers | number | tr_stat
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leftUntilDone | number | tr_stat
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manualAnnounceTime | number | tr_stat
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maxConnectedPeers | number | tr_torrent
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name | string | tr_info
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nextAnnounceTime | number | tr_stat
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nextScrapeTime | number | tr_stat
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peers | array (see below) | n/a
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peersConnected | number | tr_stat
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peersFrom | object (see below) | n/a
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peersGettingFromUs | number | tr_stat
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peersKnown | number | tr_stat
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peersSendingToUs | number | tr_stat
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pieceCount | tnumber | tr_info
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pieceSize | tnumber | tr_info
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priorities | array (see below) | n/a
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rateDownload (B/s) | number | tr_stat
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rateUpload (B/s) | number | tr_stat
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recheckProgress | 'double' | tr_stat
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scrapeResponse | string | tr_stat
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scrapeURL | string | tr_stat
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seeders | number | tr_stat
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sizeWhenDone | number | tr_stat
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startDate | number | tr_stat
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status | number | tr_stat
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swarmSpeed (K/s) | number | tr_stat
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timesCompleted | number | tr_stat
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trackers | array (see below) | n/a
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totalSize | number | tr_info
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uploadedEver | number | tr_stat
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uploadLimitMode | number | tr_torrent
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uploadLimit | number | tr_torrent
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uploadRatio | 'double' | tr_stat
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wanted | array (see below) | n/a
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webseeds | array (see below) | n/a
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webseedsSendingToUs | number | tr_stat
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-----------------------+--------------------------------------+
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files | array of objects, each containing: |
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+-------------------------+------------+
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| key | type |
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| bytesCompleted | number | tr_torrent
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| length | number | tr_info
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| name | string | tr_info
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-----------------------+--------------------------------------+
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peers | array of objects, each containing: |
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+-------------------------+------------+
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| address | string | tr_peer_stat
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| clientName | string | tr_peer_stat
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| clientIsChoked | 'boolean' | tr_peer_stat
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| clientIsInterested | 'boolean' | tr_peer_stat
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| isDownloadingFrom | 'boolean' | tr_peer_stat
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| isEncrypted | 'boolean' | tr_peer_stat
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| isIncoming | 'boolean' | tr_peer_stat
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| isUploadingTo | 'boolean' | tr_peer_stat
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| peerIsChoked | 'boolean' | tr_peer_stat
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| peerIsInterested | 'boolean' | tr_peer_stat
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| port | number | tr_peer_stat
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| progress | 'double' | tr_peer_stat
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| rateToClient (B/s) | number | tr_peer_stat
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| rateToPeer (B/s) | number | tr_peer_stat
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-----------------------+--------------------------------------+
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peersFrom | an object containing: |
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+-------------------------+------------+
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| fromCache | number | tr_stat
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| fromIncoming | number | tr_stat
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| fromPex | number | tr_stat
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| fromTracker | number | tr_stat
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-----------------------+--------------------------------------+
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priorities | an array of tr_info.filecount | tr_info
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| numbers. each is the tr_priority_t |
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| mode for the corresponding file. |
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-----------------------+--------------------------------------+
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trackers | array of objects, each containing: |
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+-------------------------+------------+
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| announce | string | tr_info
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| scrape | string | tr_info
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| tier | number | tr_info
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-----------------------+--------------------------------------+
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wanted | an array of tr_info.fileCount | tr_info
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| 'booleans' true if the corresponding |
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| file is to be downloaded. |
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-----------------------+--------------------------------------+
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webseeds | an array of strings: |
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+-------------------------+------------+
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| webseed | string | tr_info
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+-------------------------+------------+
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Example:
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Say we want to get the name and total size of torrents #7 and #10.
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Request:
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{
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"arguments": {
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"fields": [ "id", "name", "totalSize" ]
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},
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"method": "torrent-get",
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"tag": 39693
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}
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Response:
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{
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"arguments": {
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"torrents": [
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{
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"id": 10,
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"name": "Fedora x86_64 DVD",
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"totalSize", 34983493932,
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},
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{
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"id": 7,
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"name": "Ubuntu x86_64 DVD",
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"totalSize", 9923890123,
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}
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]
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},
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"result": "success",
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"tag": 39693
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}
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3.4. Adding a Torrent
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Method name: "torrent-add"
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Request arguments:
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key | value type & description
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-------------------+-------------------------------------------------
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"download-dir" | string path to download the torrent to
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"filename" | string filename or URL of the .torrent file
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"metainfo" | string base64-encoded .torrent content
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"paused" | 'boolean' if true, don't start the torrent
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"peer-limit" | number maximum number of peers
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Either "filename" OR "metainfo" MUST be included.
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All other arguments are optional.
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Response arguments: on success, a "torrent-added" object in the
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form of one of 3.3's tr_info objects with the
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fields for id, name, and hashString.
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3.5. Removing a Torrent
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Method name: "torrent-remove"
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Request arguments:
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string | value type & description
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---------------------------+-------------------------------------------------
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"ids" | array torrent list, as described in 3.1
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"delete-local-data" | 'boolean' delete local data. (default: false)
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Response arguments: none
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4. Session Requests
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4.1. Session Arguments
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string | value type & description
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---------------------------+-------------------------------------------------
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"encryption" | string "required", "preferred", "tolerated"
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"download-dir" | string default path to download torrents
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"peer-limit" | number maximum global number of peers
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"pex-allowed" | 'boolean' true means allow pex in public torrents
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"port" | number port number
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"port-forwarding-enabled" | 'boolean' true means enabled
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"speed-limit-down" | number max global download speed (in K/s)
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"speed-limit-down-enabled" | 'boolean' true means enabled
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"speed-limit-up" | number max global upload speed (in K/s)
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"speed-limit-up-enabled" | 'boolean' true means enabled
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"version" | string long version string "$version ($revision)"
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"rpc-version" | number the current RPC API version
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"rpc-version-minimum" | number the minimum RPC API version supported
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"rpc-version" indicates the RPC interface version supported by the RPC server.
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It is incremented when a new version of Transmission changes the RPC interface.
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"rpc-version-minimum" indicates the oldest API supported by the RPC server.
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It is changes when a new version of Transmission changes the RPC interface
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in a way that is not backwards compatible. There are no plans for this
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to be common behavior.
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4.1.1. Mutators
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Method name: "session-set"
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Request arguments: one or more of 4.1's arguments, except "version"
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Response arguments: none
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4.1.2. Accessors
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Method name: "session-get"
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Request arguments: none
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Response arguments: all of 4.1's arguments
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4.2. Session Statistics
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Method name: "session-stats"
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Request arguments: none
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Response arguments:
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string | value type
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---------------------------+-------------------------------------------------
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"activeTorrentCount" | number
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"downloadSpeed" | number
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"pausedTorrentCount" | number
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"torrentCount" | number
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"uploadSpeed" | number
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---------------------------+-------------------------------+
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"cumulative-stats" | object, containing: |
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+------------------+------------+
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| uploadedBytes | number | tr_session_stats
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| downloadedBytes | number | tr_session_stats
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| filesAdded | number | tr_session_stats
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| sessionCount | number | tr_session_stats
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| secondsActive | number | tr_session_stats
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---------------------------+-------------------------------+
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"current-stats" | object, containing: |
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+------------------+------------+
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| uploadedBytes | number | tr_session_stats
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| downloadedBytes | number | tr_session_stats
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| filesAdded | number | tr_session_stats
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| sessionCount | number | tr_session_stats
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| secondsActive | number | tr_session_stats
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5.0. Protocol Versions
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The following changes have been made to the RPC interface:
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RPC | Release | Backwards | |
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Vers. | Version | Compat? | Method | Description
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------+---------+-----------+----------------+-------------------------------
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1 | 1.30 | n/a | n/a | Initial version
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------+---------+-----------+----------------+-------------------------------
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2 | 1.34 | yes | torrent-get | new arg "peers"
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------+---------+-----------+----------------+-------------------------------
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3 | 1.41 | yes | torrent-get | added "port" to "peers"
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| | | torrent-get | new arg "downloaders"
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| | | session-get | new arg "version"
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| | | torrent-remove | new method
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------+---------+-----------+----------------+-------------------------------
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4 | 1.50 | yes | session-get | new arg "rpc-version"
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| | | session-get | new arg "rpc-version-minimum"
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| | | session-stats | added "cumulative-stats"
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| | | session-stats | added "current-stats"
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| | | torrent-get | new arg "downloadDir"
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------+---------+-----------+----------------+-------------------------------
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