aria2c(1)¶

Basic Options¶

-d, --dir=<DIR>¶

The directory to store the downloaded file.

-i, --input-file=<FILE>¶

Downloads the URIs listed in FILE. You can specify multiple sources for a single entity by putting multiple URIs on a single line separated by the TAB character. Additionally, options can be specified after each URI line. Option lines must start with one or more white space characters (SPACE or TAB) and must only contain one option per line. Input files can use gzip compression. When FILE is specified as -, aria2 will read the input from stdin. See the Input File subsection for details. See also the --deferred-input option. See also the --save-session option.

-l, --log=<LOG>¶

The file name of the log file. If - is specified, log is written to stdout. If empty string(“”) is specified, or this option is omitted, no log is written to disk at all.

-j, --max-concurrent-downloads=<N>¶

Set the maximum number of parallel downloads for every queue item. See also the --split option. Default: 5

-V, --check-integrity[=true|false]¶

Check file integrity by validating piece hashes or a hash of entire file. This option has effect only in BitTorrent, Metalink downloads with checksums or HTTP(S)/FTP downloads with --checksum option. If piece hashes are provided, this option can detect damaged portions of a file and re-download them. If a hash of entire file is provided, hash check is only done when file has been already download. This is determined by file length. If hash check fails, file is re-downloaded from scratch. If both piece hashes and a hash of entire file are provided, only piece hashes are used. Default: false

-c, --continue[=true|false]¶

Continue downloading a partially downloaded file. Use this option to resume a download started by a web browser or another program which downloads files sequentially from the beginning. Currently this option is only applicable to HTTP(S)/FTP downloads.

-h, --help[=<TAG>|<KEYWORD>]¶

The help messages are classified with tags. A tag starts with #. For example, type --help=#http to get the usage for the options tagged with #http. If non-tag word is given, print the usage for the options whose name includes that word. Available Values: #basic, #advanced, #http, #https, #ftp, #metalink, #bittorrent, #cookie, #hook, #file, #rpc, #checksum, #experimental, #deprecated, #help, #all Default: #basic

HTTP/FTP/SFTP Options¶

--all-proxy=<PROXY>¶

Use a proxy server for all protocols. To override a previously defined proxy, use “”. You also can override this setting and specify a proxy server for a particular protocol using --http-proxy, --https-proxy and --ftp-proxy options. This affects all downloads. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]. See also ENVIRONMENT section.

Note

If user and password are embedded in proxy URI and they are also specified by –{http,https,ftp,all}-proxy-{user,passwd} options, those specified later override prior options. For example, if you specified http-proxy-user=myname, http-proxy-passwd=mypass in aria2.conf and you specified --http-proxy="http://proxy" on the command-line, then you’d get HTTP proxy http://proxy with user myname and password mypass.

Another example: if you specified on the command-line --http-proxy="http://user:pass@proxy" --http-proxy-user="myname" --http-proxy-passwd="mypass", then you’d get HTTP proxy http://proxy with user myname and password mypass.

One more example: if you specified in command-line --http-proxy-user="myname" --http-proxy-passwd="mypass" --http-proxy="http://user:pass@proxy", then you’d get HTTP proxy http://proxy with user user and password pass.

--all-proxy-passwd=<PASSWD>¶

Set password for --all-proxy option.

--all-proxy-user=<USER>¶

Set user for --all-proxy option.

--checksum=<TYPE>=<DIGEST>¶

Set checksum. TYPE is hash type. The supported hash type is listed in Hash Algorithms in aria2c -v. DIGEST is hex digest. For example, setting sha-1 digest looks like this: sha-1=0192ba11326fe2298c8cb4de616f4d4140213838 This option applies only to HTTP(S)/FTP downloads.

--connect-timeout=<SEC>¶

Set the connect timeout in seconds to establish connection to HTTP/FTP/proxy server. After the connection is established, this option makes no effect and --timeout option is used instead. Default: 60

--dry-run[=true|false]¶

If true is given, aria2 just checks whether the remote file is available and doesn’t download data. This option has effect on HTTP/FTP download. BitTorrent downloads are canceled if true is specified. Default: false

--lowest-speed-limit=<SPEED>¶

Close connection if download speed is lower than or equal to this value(bytes per sec). 0 means aria2 does not have a lowest speed limit. You can append K or M (1K = 1024, 1M = 1024K). This option does not affect BitTorrent downloads. Default: 0

-x, --max-connection-per-server=<NUM>¶

The maximum number of connections to one server for each download. Default: 1

--max-file-not-found=<NUM>¶

If aria2 receives “file not found” status from the remote HTTP/FTP servers NUM times without getting a single byte, then force the download to fail. Specify 0 to disable this option. This options is effective only when using HTTP/FTP servers. The number of retry attempt is counted toward --max-tries, so it should be configured too.

Default: 0

-m, --max-tries=<N>¶

Set number of tries. 0 means unlimited. See also --retry-wait. Default: 5

-k, --min-split-size=<SIZE>¶

aria2 does not split less than 2*SIZE byte range. For example, let’s consider downloading 20MiB file. If SIZE is 10M, aria2 can split file into 2 range [0-10MiB) and [10MiB-20MiB) and download it using 2 sources(if --split >= 2, of course). If SIZE is 15M, since 2*15M > 20MiB, aria2 does not split file and download it using 1 source. You can append K or M (1K = 1024, 1M = 1024K). Possible Values: 1M -1024M Default: 20M

--netrc-path=<FILE>¶

Specify the path to the netrc file. Default: $(HOME)/.netrc

Note

Permission of the .netrc file must be 600. Otherwise, the file will be ignored.

-n, --no-netrc[=true|false]¶

Disables netrc support. netrc support is enabled by default.

Note

netrc file is only read at the startup if --no-netrc is false. So if --no-netrc is true at the startup, no netrc is available throughout the session. You cannot get netrc enabled even if you send --no-netrc=false using aria2.changeGlobalOption().

--no-proxy=<DOMAINS>¶

Specify a comma separated list of host names, domains and network addresses with or without a subnet mask where no proxy should be used.

Note

For network addresses with a subnet mask, both IPv4 and IPv6 addresses work. The current implementation does not resolve the host name in an URI to compare network addresses specified in --no-proxy. So it is only effective if URI has numeric IP addresses.

-o, --out=<FILE>¶

The file name of the downloaded file. When the --force-sequential option is used, this option is ignored.

Note

You cannot specify a file name for Metalink or BitTorrent downloads. The file name specified here is only used when the URIs fed to aria2 are given on the command line directly, but not when using --input-file, --force-sequential option.

Example:

$ aria2c -o myfile.zip "http://mirror1/file.zip" "http://mirror2/file.zip"

--proxy-method=<METHOD>¶

Set the method to use in proxy request. METHOD is either get or tunnel. HTTPS downloads always use tunnel regardless of this option. Default: get

-R, --remote-time[=true|false]¶

Retrieve timestamp of the remote file from the remote HTTP/FTP server and if it is available, apply it to the local file. Default: false

--reuse-uri[=true|false]¶

Reuse already used URIs if no unused URIs are left. Default: true

--retry-wait=<SEC>¶

Set the seconds to wait between retries. When SEC > 0, aria2 will retry downloads when the HTTP server returns a 503 response. Default: 0

--server-stat-of=<FILE>¶

Specify the file name to which performance profile of the servers is saved. You can load saved data using --server-stat-if option. See Server Performance Profile subsection below for file format.

--server-stat-if=<FILE>¶

Specify the file name to load performance profile of the servers. The loaded data will be used in some URI selector such as feedback. See also --uri-selector option. See Server Performance Profile subsection below for file format.

--server-stat-timeout=<SEC>¶

Specifies timeout in seconds to invalidate performance profile of the servers since the last contact to them. Default: 86400 (24hours)

-s, --split=<N>¶

Download a file using N connections. If more than N URIs are given, first N URIs are used and remaining URIs are used for backup. If less than N URIs are given, those URIs are used more than once so that N connections total are made simultaneously. The number of connections to the same host is restricted by the --max-connection-per-server option. See also the --min-split-size option. Default: 5

Note

Some Metalinks regulate the number of servers to connect. aria2 strictly respects them. This means that if Metalink defines the maxconnections attribute lower than N, then aria2 uses the value of this lower value instead of N.

--stream-piece-selector=<SELECTOR>¶

Specify piece selection algorithm used in HTTP/FTP download. Piece means fixed length segment which is downloaded in parallel in segmented download. If default is given, aria2 selects piece so that it reduces the number of establishing connection. This is reasonable default behavior because establishing connection is an expensive operation. If inorder is given, aria2 selects piece which has minimum index. Index=0 means first of the file. This will be useful to view movie while downloading it. --enable-http-pipelining option may be useful to reduce re-connection overhead. Please note that aria2 honors --min-split-size option, so it will be necessary to specify a reasonable value to --min-split-size option. If random is given, aria2 selects piece randomly. Like inorder, --min-split-size option is honored. If geom is given, at the beginning aria2 selects piece which has minimum index like inorder, but it exponentially increasingly keeps space from previously selected piece. This will reduce the number of establishing connection and at the same time it will download the beginning part of the file first. This will be useful to view movie while downloading it. Default: default

-t, --timeout=<SEC>¶

Set timeout in seconds. Default: 60

--uri-selector=<SELECTOR>¶

Specify URI selection algorithm. The possible values are inorder, feedback and adaptive. If inorder is given, URI is tried in the order appeared in the URI list. If feedback is given, aria2 uses download speed observed in the previous downloads and choose fastest server in the URI list. This also effectively skips dead mirrors. The observed download speed is a part of performance profile of servers mentioned in --server-stat-of and --server-stat-if options. If adaptive is given, selects one of the best mirrors for the first and reserved connections. For supplementary ones, it returns mirrors which has not been tested yet, and if each of them has already been tested, returns mirrors which has to be tested again. Otherwise, it doesn’t select anymore mirrors. Like feedback, it uses a performance profile of servers. Default: feedback

HTTP Specific Options¶

--ca-certificate=<FILE>¶

Use the certificate authorities in FILE to verify the peers. The certificate file must be in PEM format and can contain multiple CA certificates. Use --check-certificate option to enable verification.

Note

If you build with OpenSSL or the recent version of GnuTLS which has gnutls_certificate_set_x509_system_trust() function and the library is properly configured to locate the system-wide CA certificates store, aria2 will automatically load those certificates at the startup.

Note

WinTLS and AppleTLS do not support this option. Instead you will have to import the certificate into the OS trust store.

--certificate=<FILE>¶

Use the client certificate in FILE. The certificate must be either in PKCS12 (.p12, .pfx) or in PEM format.

PKCS12 files must contain the certificate, a key and optionally a chain of additional certificates. Only PKCS12 files with a blank import password can be opened!

When using PEM, you have to specify the private key via --private-key as well.

Note

WinTLS does not support PEM files at the moment. Users have to use PKCS12 files.

Note

AppleTLS users should use the KeyChain Access utility to import the client certificate and get the SHA-1 fingerprint from the Information dialog corresponding to that certificate. To start aria2c use –certificate=<SHA-1>. Alternatively PKCS12 files are also supported. PEM files, however, are not supported.

--check-certificate[=true|false]¶

Verify the peer using certificates specified in --ca-certificate option. Default: true

--http-accept-gzip[=true|false]¶

Send Accept: deflate, gzip request header and inflate response if remote server responds with Content-Encoding: gzip or Content-Encoding: deflate. Default: false

Note

Some server responds with Content-Encoding: gzip for files which itself is gzipped file. aria2 inflates them anyway because of the response header.

--http-auth-challenge[=true|false]¶

Send HTTP authorization header only when it is requested by the server. If false is set, then authorization header is always sent to the server. There is an exception: if user name and password are embedded in URI, authorization header is always sent to the server regardless of this option. Default: false

--http-no-cache[=true|false]¶

Send Cache-Control: no-cache and Pragma: no-cache header to avoid cached content. If false is given, these headers are not sent and you can add Cache-Control header with a directive you like using --header option. Default: false

--http-user=<USER>¶

Set HTTP user. This affects all URIs.

--http-passwd=<PASSWD>¶

Set HTTP password. This affects all URIs.

--http-proxy=<PROXY>¶

Use a proxy server for HTTP. To override a previously defined proxy, use “”. See also the --all-proxy option. This affects all http downloads. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]

--http-proxy-passwd=<PASSWD>¶

Set password for --http-proxy.

--http-proxy-user=<USER>¶

Set user for --http-proxy.

--https-proxy=<PROXY>¶

Use a proxy server for HTTPS. To override a previously defined proxy, use “”. See also the --all-proxy option. This affects all https download. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]

--https-proxy-passwd=<PASSWD>¶

Set password for --https-proxy.

--https-proxy-user=<USER>¶

Set user for --https-proxy.

--private-key=<FILE>¶

Use the private key in FILE. The private key must be decrypted and in PEM format. The behavior when encrypted one is given is undefined. See also --certificate option.

--referer=<REFERER>¶

Set an http referrer (Referer). This affects all http/https downloads. If * is given, the download URI is also used as the referrer. This may be useful when used together with the --parameterized-uri option.

--enable-http-keep-alive[=true|false]¶

Enable HTTP/1.1 persistent connection. Default: true

--enable-http-pipelining[=true|false]¶

Enable HTTP/1.1 pipelining. Default: false

Note

In performance perspective, there is usually no advantage to enable this option.

--header=<HEADER>¶

Append HEADER to HTTP request header. You can use this option repeatedly to specify more than one header:

$ aria2c --header="X-A: b78" --header="X-B: 9J1" "http://host/file"

--load-cookies=<FILE>¶

Load Cookies from FILE using the Firefox3 format (SQLite3), Chromium/Google Chrome (SQLite3) and the Mozilla/Firefox(1.x/2.x)/Netscape format.

Note

If aria2 is built without libsqlite3, then it doesn’t support Firefox3 and Chromium/Google Chrome cookie format.

--save-cookies=<FILE>¶

Save Cookies to FILE in Mozilla/Firefox(1.x/2.x)/ Netscape format. If FILE already exists, it is overwritten. Session Cookies are also saved and their expiry values are treated as 0. Possible Values: /path/to/file

--use-head[=true|false]¶

Use HEAD method for the first request to the HTTP server. Default: false

-U, --user-agent=<USER_AGENT>¶

Set user agent for HTTP(S) downloads. Default: aria2/$VERSION, $VERSION is replaced by package version.

FTP/SFTP Specific Options¶

--ftp-user=<USER>¶

Set FTP user. This affects all URIs. Default: anonymous

--ftp-passwd=<PASSWD>¶

Set FTP password. This affects all URIs. If user name is embedded but password is missing in URI, aria2 tries to resolve password using .netrc. If password is found in .netrc, then use it as password. If not, use the password specified in this option. Default: ARIA2USER@

-p, --ftp-pasv[=true|false]¶

Use the passive mode in FTP. If false is given, the active mode will be used. Default: true

Note

This option is ignored for SFTP transfer.

--ftp-proxy=<PROXY>¶

Use a proxy server for FTP. To override a previously defined proxy, use “”. See also the --all-proxy option. This affects all ftp downloads. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]

--ftp-proxy-passwd=<PASSWD>¶

Set password for --ftp-proxy option.

--ftp-proxy-user=<USER>¶

Set user for --ftp-proxy option.

--ftp-type=<TYPE>¶

Set FTP transfer type. TYPE is either binary or ascii. Default: binary

Note

This option is ignored for SFTP transfer.

--ftp-reuse-connection[=true|false]¶

Reuse connection in FTP. Default: true

--ssh-host-key-md=<TYPE>=<DIGEST>¶

Set checksum for SSH host public key. TYPE is hash type. The supported hash type is sha-1 or md5. DIGEST is hex digest. For example: sha-1=b030503d4de4539dc7885e6f0f5e256704edf4c3. This option can be used to validate server’s public key when SFTP is used. If this option is not set, which is default, no validation takes place.

BitTorrent/Metalink Options¶

--select-file=<INDEX>...¶

Set file to download by specifying its index. You can find the file index using the --show-files option. Multiple indexes can be specified by using ,, for example: 3,6. You can also use - to specify a range: 1-5. , and - can be used together: 1-5,8,9. When used with the -M option, index may vary depending on the query (see –metalink-* options).

Note

In multi file torrent, the adjacent files specified by this option may also be downloaded. This is by design, not a bug. A single piece may include several files or part of files, and aria2 writes the piece to the appropriate files.

-S, --show-files[=true|false]¶

Print file listing of “.torrent”, “.meta4” and “.metalink” file and exit. In case of “.torrent” file, additional information (infohash, piece length, etc) is also printed.

BitTorrent Specific Options¶

--bt-detach-seed-only[=true|false]¶

Exclude seed only downloads when counting concurrent active downloads (See -j option). This means that if -j3 is given and this option is turned on and 3 downloads are active and one of those enters seed mode, then it is excluded from active download count (thus it becomes 2), and the next download waiting in queue gets started. But be aware that seeding item is still recognized as active download in RPC method. Default: false

--bt-enable-hook-after-hash-check[=true|false]¶

Allow hook command invocation after hash check (see -V option) in BitTorrent download. By default, when hash check succeeds, the command given by --on-bt-download-complete is executed. To disable this action, give false to this option. Default: true

--bt-enable-lpd[=true|false]¶

Enable Local Peer Discovery. If a private flag is set in a torrent, aria2 doesn’t use this feature for that download even if true is given. Default: false

--bt-exclude-tracker=<URI>[,...]¶

Comma separated list of BitTorrent tracker’s announce URI to remove. You can use special value * which matches all URIs, thus removes all announce URIs. When specifying * in shell command-line, don’t forget to escape or quote it. See also --bt-tracker option.

--bt-external-ip=<IPADDRESS>¶

Specify the external IP address to report to a BitTorrent tracker. Although this function is named external, it can accept any kind of IP addresses. IPADDRESS must be a numeric IP address.

--bt-force-encryption[=true|false]¶

Requires BitTorrent message payload encryption with arc4. This is a shorthand of --bt-require-crypto --bt-min-crypto-level=arc4. This option does not change the option value of those options. If true is given, deny legacy BitTorrent handshake and only use Obfuscation handshake and always encrypt message payload. Default: false

--bt-hash-check-seed[=true|false]¶

If true is given, after hash check using --check-integrity option and file is complete, continue to seed file. If you want to check file and download it only when it is damaged or incomplete, set this option to false. This option has effect only on BitTorrent download. Default: true

--bt-lpd-interface=<INTERFACE>¶

Use given interface for Local Peer Discovery. If this option is not specified, the default interface is chosen. You can specify interface name and IP address. Possible Values: interface, IP address

--bt-max-open-files=<NUM>¶

Specify maximum number of files to open in multi-file BitTorrent/Metalink download globally. Default: 100

--bt-max-peers=<NUM>¶

Specify the maximum number of peers per torrent. 0 means unlimited. See also --bt-request-peer-speed-limit option. Default: 55

--bt-metadata-only[=true|false]¶

Download meta data only. The file(s) described in meta data will not be downloaded. This option has effect only when BitTorrent Magnet URI is used. See also --bt-save-metadata option. Default: false

--bt-min-crypto-level=plain|arc4¶

Set minimum level of encryption method. If several encryption methods are provided by a peer, aria2 chooses the lowest one which satisfies the given level. Default: plain

--bt-prioritize-piece=head[=<SIZE>],tail[=<SIZE>]¶

Try to download first and last pieces of each file first. This is useful for previewing files. The argument can contain 2 keywords: head and tail. To include both keywords, they must be separated by comma. These keywords can take one parameter, SIZE. For example, if head=<SIZE> is specified, pieces in the range of first SIZE bytes of each file get higher priority. tail=<SIZE> means the range of last SIZE bytes of each file. SIZE can include K or M (1K = 1024, 1M = 1024K). If SIZE is omitted, SIZE=1M is used.

--bt-remove-unselected-file[=true|false]¶

Removes the unselected files when download is completed in BitTorrent. To select files, use --select-file option. If it is not used, all files are assumed to be selected. Please use this option with care because it will actually remove files from your disk. Default: false

--bt-require-crypto[=true|false]¶

If true is given, aria2 doesn’t accept and establish connection with legacy BitTorrent handshake(\19BitTorrent protocol). Thus aria2 always uses Obfuscation handshake. Default: false

--bt-request-peer-speed-limit=<SPEED>¶

If the whole download speed of every torrent is lower than SPEED, aria2 temporarily increases the number of peers to try for more download speed. Configuring this option with your preferred download speed can increase your download speed in some cases. You can append K or M (1K = 1024, 1M = 1024K). Default: 50K

--bt-save-metadata[=true|false]¶

Save meta data as “.torrent” file. This option has effect only when BitTorrent Magnet URI is used. The file name is hex encoded info hash with suffix “.torrent”. The directory to be saved is the same directory where download file is saved. If the same file already exists, meta data is not saved. See also --bt-metadata-only option. Default: false

--bt-seed-unverified[=true|false]¶

Seed previously downloaded files without verifying piece hashes. Default: false

--bt-stop-timeout=<SEC>¶

Stop BitTorrent download if download speed is 0 in consecutive SEC seconds. If 0 is given, this feature is disabled. Default: 0

--bt-tracker=<URI>[,...]¶

Comma separated list of additional BitTorrent tracker’s announce URI. These URIs are not affected by --bt-exclude-tracker option because they are added after URIs in --bt-exclude-tracker option are removed.

--bt-tracker-connect-timeout=<SEC>¶

Set the connect timeout in seconds to establish connection to tracker. After the connection is established, this option makes no effect and --bt-tracker-timeout option is used instead. Default: 60

--bt-tracker-interval=<SEC>¶

Set the interval in seconds between tracker requests. This completely overrides interval value and aria2 just uses this value and ignores the min interval and interval value in the response of tracker. If 0 is set, aria2 determines interval based on the response of tracker and the download progress. Default: 0

--bt-tracker-timeout=<SEC>¶

Set timeout in seconds. Default: 60

--dht-entry-point=<HOST>:<PORT>¶

Set host and port as an entry point to IPv4 DHT network.

--dht-entry-point6=<HOST>:<PORT>¶

Set host and port as an entry point to IPv6 DHT network.

--dht-file-path=<PATH>¶

Change the IPv4 DHT routing table file to PATH. Default: $HOME/.aria2/dht.dat if present, otherwise $XDG_CACHE_HOME/aria2/dht.dat.

--dht-file-path6=<PATH>¶

Change the IPv6 DHT routing table file to PATH. Default: $HOME/.aria2/dht6.dat if present, otherwise $XDG_CACHE_HOME/aria2/dht6.dat.

--dht-listen-addr6=<ADDR>¶

Specify address to bind socket for IPv6 DHT. It should be a global unicast IPv6 address of the host.

--dht-listen-port=<PORT>...¶

Set UDP listening port used by DHT(IPv4, IPv6) and UDP tracker. Multiple ports can be specified by using ,, for example: 6881,6885. You can also use - to specify a range: 6881-6999. , and - can be used together. Default: 6881-6999

Note

Make sure that the specified ports are open for incoming UDP traffic.

--dht-message-timeout=<SEC>¶

Set timeout in seconds. Default: 10

--enable-dht[=true|false]¶

Enable IPv4 DHT functionality. It also enables UDP tracker support. If a private flag is set in a torrent, aria2 doesn’t use DHT for that download even if true is given. Default: true

--enable-dht6[=true|false]¶

Enable IPv6 DHT functionality. If a private flag is set in a torrent, aria2 doesn’t use DHT for that download even if true is given. Use --dht-listen-port option to specify port number to listen on. See also --dht-listen-addr6 option.

--enable-peer-exchange[=true|false]¶

Enable Peer Exchange extension. If a private flag is set in a torrent, this feature is disabled for that download even if true is given. Default: true

--follow-torrent=true|false|mem¶

If true or mem is specified, when a file whose suffix is .torrent or content type is application/x-bittorrent is downloaded, aria2 parses it as a torrent file and downloads files mentioned in it. If mem is specified, a torrent file is not written to the disk, but is just kept in memory. If false is specified, the .torrent file is downloaded to the disk, but is not parsed as a torrent and its contents are not downloaded. Default: true

-O, --index-out=<INDEX>=<PATH>¶

Set file path for file with index=INDEX. You can find the file index using the --show-files option. PATH is a relative path to the path specified in --dir option. You can use this option multiple times. Using this option, you can specify the output file names of BitTorrent downloads.

--listen-port=<PORT>...¶

Set TCP port number for BitTorrent downloads. Multiple ports can be specified by using ,, for example: 6881,6885. You can also use - to specify a range: 6881-6999. , and - can be used together: 6881-6889,6999. Default: 6881-6999

Note

Make sure that the specified ports are open for incoming TCP traffic.

--max-overall-upload-limit=<SPEED>¶

Set max overall upload speed in bytes/sec. 0 means unrestricted. You can append K or M (1K = 1024, 1M = 1024K). To limit the upload speed per torrent, use --max-upload-limit option. Default: 0

-u, --max-upload-limit=<SPEED>¶

Set max upload speed per each torrent in bytes/sec. 0 means unrestricted. You can append K or M (1K = 1024, 1M = 1024K). To limit the overall upload speed, use --max-overall-upload-limit option. Default: 0

--peer-id-prefix=<PEER_ID_PREFIX>¶

Specify the prefix of peer ID. The peer ID in BitTorrent is 20 byte length. If more than 20 bytes are specified, only first 20 bytes are used. If less than 20 bytes are specified, random byte data are added to make its length 20 bytes.

Default: A2-$MAJOR-$MINOR-$PATCH-, $MAJOR, $MINOR and $PATCH are replaced by major, minor and patch version number respectively. For instance, aria2 version 1.18.8 has prefix ID A2-1-18-8-.

--seed-ratio=<RATIO>¶

Specify share ratio. Seed completed torrents until share ratio reaches RATIO. You are strongly encouraged to specify equals or more than 1.0 here. Specify 0.0 if you intend to do seeding regardless of share ratio. If --seed-time option is specified along with this option, seeding ends when at least one of the conditions is satisfied. Default: 1.0

--seed-time=<MINUTES>¶

Specify seeding time in minutes. Also see the --seed-ratio option.

Note

Specifying --seed-time=0 disables seeding after download completed.

-T, --torrent-file=<TORRENT_FILE>¶

The path to the “.torrent” file. You are not required to use this option because you can specify “.torrent” files without --torrent-file.

Metalink Specific Options¶

--follow-metalink=true|false|mem¶

If true or mem is specified, when a file whose suffix is .meta4 or .metalink or content type of application/metalink4+xml or application/metalink+xml is downloaded, aria2 parses it as a metalink file and downloads files mentioned in it. If mem is specified, a metalink file is not written to the disk, but is just kept in memory. If false is specified, the .metalink file is downloaded to the disk, but is not parsed as a metalink file and its contents are not downloaded. Default: true

--metalink-base-uri=<URI>¶

Specify base URI to resolve relative URI in metalink:url and metalink:metaurl element in a metalink file stored in local disk. If URI points to a directory, URI must end with /.

-M, --metalink-file=<METALINK_FILE>¶

The file path to “.meta4” and “.metalink” file. Reads input from stdin when - is specified. You are not required to use this option because you can specify “.metalink” files without --metalink-file.

--metalink-language=<LANGUAGE>¶

The language of the file to download.

--metalink-location=<LOCATION>[,...]¶

The location of the preferred server. A comma-delimited list of locations is acceptable, for example, jp,us.

--metalink-os=<OS>¶

The operating system of the file to download.

--metalink-version=<VERSION>¶

The version of the file to download.

--metalink-preferred-protocol=<PROTO>¶

Specify preferred protocol. The possible values are http, https, ftp and none. Specify none to disable this feature. Default: none

--metalink-enable-unique-protocol[=true|false]¶

If true is given and several protocols are available for a mirror in a metalink file, aria2 uses one of them. Use --metalink-preferred-protocol option to specify the preference of protocol. Default: true

RPC Options¶

--enable-rpc[=true|false]¶

Enable JSON-RPC/XML-RPC server. It is strongly recommended to set secret authorization token using --rpc-secret option. See also --rpc-listen-port option. Default: false

--pause[=true|false]¶

Pause download after added. This option is effective only when --enable-rpc=true is given. Default: false

--pause-metadata[=true|false]¶

Pause downloads created as a result of metadata download. There are 3 types of metadata downloads in aria2: (1) downloading .torrent file. (2) downloading torrent metadata using magnet link. (3) downloading metalink file. These metadata downloads will generate downloads using their metadata. This option pauses these subsequent downloads. This option is effective only when --enable-rpc=true is given. Default: false

--rpc-allow-origin-all[=true|false]¶

Add Access-Control-Allow-Origin header field with value * to the RPC response. Default: false

--rpc-certificate=<FILE>¶

Use the certificate in FILE for RPC server. The certificate must be either in PKCS12 (.p12, .pfx) or in PEM format.

PKCS12 files must contain the certificate, a key and optionally a chain of additional certificates. Only PKCS12 files with a blank import password can be opened!

When using PEM, you have to specify the private key via --rpc-private-key as well. Use --rpc-secure option to enable encryption.

Note

WinTLS does not support PEM files at the moment. Users have to use PKCS12 files.

Note

AppleTLS users should use the KeyChain Access utility to first generate a self-signed SSL-Server certificate, e.g. using the wizard, and get the SHA-1 fingerprint from the Information dialog corresponding to that new certificate. To start aria2c with --rpc-secure use –rpc-certificate=<SHA-1>. Alternatively PKCS12 files are also supported. PEM files, however, are not supported.

--rpc-listen-all[=true|false]¶

Listen incoming JSON-RPC/XML-RPC requests on all network interfaces. If false is given, listen only on local loopback interface. Default: false

--rpc-listen-port=<PORT>¶

Specify a port number for JSON-RPC/XML-RPC server to listen to. Possible Values: 1024 -65535 Default: 6800

--rpc-max-request-size=<SIZE>¶

Set max size of JSON-RPC/XML-RPC request. If aria2 detects the request is more than SIZE bytes, it drops connection. Default: 2M

--rpc-passwd=<PASSWD>¶

Set JSON-RPC/XML-RPC password.

Warning

--rpc-passwd option will be deprecated in the future release. Migrate to --rpc-secret option as soon as possible.

--rpc-private-key=<FILE>¶

Use the private key in FILE for RPC server. The private key must be decrypted and in PEM format. Use --rpc-secure option to enable encryption. See also --rpc-certificate option.

--rpc-save-upload-metadata[=true|false]¶

Save the uploaded torrent or metalink meta data in the directory specified by --dir option. The file name consists of SHA-1 hash hex string of meta data plus extension. For torrent, the extension is ‘.torrent’. For metalink, it is ‘.meta4’. If false is given to this option, the downloads added by aria2.addTorrent() or aria2.addMetalink() will not be saved by --save-session option. Default: false

--rpc-secret=<TOKEN>¶

Set RPC secret authorization token. Read RPC authorization secret token to know how this option value is used.

--rpc-secure[=true|false]¶

RPC transport will be encrypted by SSL/TLS. The RPC clients must use https scheme to access the server. For WebSocket client, use wss scheme. Use --rpc-certificate and --rpc-private-key options to specify the server certificate and private key.

--rpc-user=<USER>¶

Set JSON-RPC/XML-RPC user.

Warning

--rpc-user option will be deprecated in the future release. Migrate to --rpc-secret option as soon as possible.

Advanced Options¶

--allow-overwrite[=true|false]¶

Restart download from scratch if the corresponding control file doesn’t exist. See also --auto-file-renaming option. Default: false

--allow-piece-length-change[=true|false]¶

If false is given, aria2 aborts download when a piece length is different from one in a control file. If true is given, you can proceed but some download progress will be lost. Default: false

--always-resume[=true|false]¶

Always resume download. If true is given, aria2 always tries to resume download and if resume is not possible, aborts download. If false is given, when all given URIs do not support resume or aria2 encounters N URIs which does not support resume (N is the value specified using --max-resume-failure-tries option), aria2 downloads file from scratch. See --max-resume-failure-tries option. Default: true

--async-dns[=true|false]¶

Enable asynchronous DNS. Default: true

--async-dns-server=<IPADDRESS>[,...]¶

Comma separated list of DNS server address used in asynchronous DNS resolver. Usually asynchronous DNS resolver reads DNS server addresses from /etc/resolv.conf. When this option is used, it uses DNS servers specified in this option instead of ones in /etc/resolv.conf. You can specify both IPv4 and IPv6 address. This option is useful when the system does not have /etc/resolv.conf and user does not have the permission to create it.

--auto-file-renaming[=true|false]¶

Rename file name if the same file already exists. This option works only in HTTP(S)/FTP download. The new file name has a dot and a number(1..9999) appended. Default: true

--auto-save-interval=<SEC>¶

Save a control file(*.aria2) every SEC seconds. If 0 is given, a control file is not saved during download. aria2 saves a control file when it stops regardless of the value. The possible values are between 0 to 600. Default: 60

--conditional-get[=true|false]¶

Download file only when the local file is older than remote file. This function only works with HTTP(S) downloads only. It does not work if file size is specified in Metalink. It also ignores Content-Disposition header. If a control file exists, this option will be ignored. This function uses If-Modified-Since header to get only newer file conditionally. When getting modification time of local file, it uses user supplied file name (see --out option) or file name part in URI if --out is not specified. To overwrite existing file, --allow-overwrite is required. Default: false

--conf-path=<PATH>¶

Change the configuration file path to PATH. Default: $HOME/.aria2/aria2.conf if present, otherwise $XDG_CONFIG_HOME/aria2/aria2.conf.

--console-log-level=<LEVEL>¶

Set log level to output to console. LEVEL is either debug, info, notice, warn or error. Default: notice

-D, --daemon[=true|false]¶

Run as daemon. The current working directory will be changed to / and standard input, standard output and standard error will be redirected to /dev/null. Default: false

--deferred-input[=true|false]¶

If true is given, aria2 does not read all URIs and options from file specified by --input-file option at startup, but it reads one by one when it needs later. This may reduce memory usage if input file contains a lot of URIs to download. If false is given, aria2 reads all URIs and options at startup. Default: false

Warning

--deferred-input option will be disabled when --save-session is used together.

--disable-ipv6[=true|false]¶

Disable IPv6. This is useful if you have to use broken DNS and want to avoid terribly slow AAAA record lookup. Default: false

--disk-cache=<SIZE>¶

Enable disk cache. If SIZE is 0, the disk cache is disabled. This feature caches the downloaded data in memory, which grows to at most SIZE bytes. The cache storage is created for aria2 instance and shared by all downloads. The one advantage of the disk cache is reduce the disk I/O because the data are written in larger unit and it is reordered by the offset of the file. If hash checking is involved and the data are cached in memory, we don’t need to read them from the disk. SIZE can include K or M (1K = 1024, 1M = 1024K). Default: 16M

--download-result=<OPT>¶

This option changes the way Download Results is formatted. If OPT is default, print GID, status, average download speed and path/URI. If multiple files are involved, path/URI of first requested file is printed and remaining ones are omitted. If OPT is full, print GID, status, average download speed, percentage of progress and path/URI. The percentage of progress and path/URI are printed for each requested file in each row. If OPT is hide, Download Results is hidden. Default: default

--dscp=<DSCP>¶

Set DSCP value in outgoing IP packets of BitTorrent traffic for QoS. This parameter sets only DSCP bits in TOS field of IP packets, not the whole field. If you take values from /usr/include/netinet/ip.h divide them by 4 (otherwise values would be incorrect, e.g. your CS1 class would turn into CS4). If you take commonly used values from RFC, network vendors’ documentation, Wikipedia or any other source, use them as they are.

--rlimit-nofile=<NUM>¶

Set the soft limit of open file descriptors. This open will only have effect when:

1. The system supports it (posix)

2. The limit does not exceed the hard limit.

3. The specified limit is larger than the current soft limit.

This is equivalent to setting nofile via ulimit, except that it will never decrease the limit.

This option is only available on systems supporting the rlimit API.

--enable-color[=true|false]¶

Enable color output for a terminal. Default: true

--enable-mmap[=true|false]¶

Map files into memory. This option may not work if the file space is not pre-allocated. See --file-allocation.

Default: false

--event-poll=<POLL>¶

Specify the method for polling events. The possible values are epoll, kqueue, port, poll and select. For each epoll, kqueue, port and poll, it is available if system supports it. epoll is available on recent Linux. kqueue is available on various *BSD systems including Mac OS X. port is available on Open Solaris. The default value may vary depending on the system you use.

--file-allocation=<METHOD>¶

Specify file allocation method. none doesn’t pre-allocate file space. prealloc pre-allocates file space before download begins. This may take some time depending on the size of the file. If you are using newer file systems such as ext4 (with extents support), btrfs, xfs or NTFS(MinGW build only), falloc is your best choice. It allocates large(few GiB) files almost instantly. Don’t use falloc with legacy file systems such as ext3 and FAT32 because it takes almost same time as prealloc and it blocks aria2 entirely until allocation finishes. falloc may not be available if your system doesn’t have posix_fallocate(3) function. trunc uses ftruncate(2) system call or platform-specific counterpart to truncate a file to a specified length.

Possible Values: none, prealloc, trunc, falloc Default: prealloc

Warning

Using trunc seemingly allocates disk space very quickly, but what it actually does is that it sets file length metadata in file system, and does not allocate disk space at all. This means that it does not help avoiding fragmentation.

--force-save[=true|false]¶

Save download with --save-session option even if the download is completed or removed. This option also saves control file in that situations. This may be useful to save BitTorrent seeding which is recognized as completed state. Default: false

--gid=<GID>¶

Set GID manually. aria2 identifies each download by the ID called GID. The GID must be hex string of 16 characters, thus [0-9a-zA-Z] are allowed and leading zeros must not be stripped. The GID all 0 is reserved and must not be used. The GID must be unique, otherwise error is reported and the download is not added. This option is useful when restoring the sessions saved using --save-session option. If this option is not used, new GID is generated by aria2.

--hash-check-only[=true|false]¶

If true is given, after hash check using --check-integrity option, abort download whether or not download is complete. Default: false

--human-readable[=true|false]¶

Print sizes and speed in human readable format (e.g., 1.2Ki, 3.4Mi) in the console readout. Default: true

--interface=<INTERFACE>¶

Bind sockets to given interface. You can specify interface name, IP address and host name. Possible Values: interface, IP address, host name

Note

If an interface has multiple addresses, it is highly recommended to specify IP address explicitly. See also --disable-ipv6. If your system doesn’t have getifaddrs(3), this option doesn’t accept interface name.

--max-download-result=<NUM>¶

Set maximum number of download result kept in memory. The download results are completed/error/removed downloads. The download results are stored in FIFO queue and it can store at most NUM download results. When queue is full and new download result is created, oldest download result is removed from the front of the queue and new one is pushed to the back. Setting big number in this option may result high memory consumption after thousands of downloads. Specifying 0 means no download result is kept. Default: 1000

--max-mmap-limit=<SIZE>¶

Set the maximum file size to enable mmap (see --enable-mmap option). The file size is determined by the sum of all files contained in one download. For example, if a download contains 5 files, then file size is the total size of those files. If file size is strictly greater than the size specified in this option, mmap will be disabled. Default: 9223372036854775807

--max-resume-failure-tries=<N>¶

When used with --always-resume=false, aria2 downloads file from scratch when aria2 detects N number of URIs that does not support resume. If N is 0, aria2 downloads file from scratch when all given URIs do not support resume. See --always-resume option. Default: 0

--min-tls-version=<VERSION>¶

Specify minimum SSL/TLS version to enable. Possible Values: SSLv3, TLSv1, TLSv1.1, TLSv1.2 Default: TLSv1

--multiple-interface=<INTERFACES>¶

Comma separated list of interfaces to bind sockets to. Requests will be splited among the interfaces to achieve link aggregation. You can specify interface name, IP address and hostname. If --interface is used, this option will be ignored. Possible Values: interface, IP address, hostname

--log-level=<LEVEL>¶

Set log level to output. LEVEL is either debug, info, notice, warn or error. Default: debug

--on-bt-download-complete=<COMMAND>¶

For BitTorrent, a command specified in --on-download-complete is called after download completed and seeding is over. On the other hand, this option set the command to be executed after download completed but before seeding. See Event Hook for more details about COMMAND. Possible Values: /path/to/command

--on-download-complete=<COMMAND>¶

Set the command to be executed after download completed. See See Event Hook for more details about COMMAND. See also --on-download-stop option. Possible Values: /path/to/command

--on-download-error=<COMMAND>¶

Set the command to be executed after download aborted due to error. See Event Hook for more details about COMMAND. See also --on-download-stop option. Possible Values: /path/to/command

--on-download-pause=<COMMAND>¶

Set the command to be executed after download was paused. See Event Hook for more details about COMMAND. Possible Values: /path/to/command

--on-download-start=<COMMAND>¶

Set the command to be executed after download got started. See Event Hook for more details about COMMAND. Possible Values: /path/to/command

--on-download-stop=<COMMAND>¶

Set the command to be executed after download stopped. You can override the command to be executed for particular download result using --on-download-complete and --on-download-error. If they are specified, command specified in this option is not executed. See Event Hook for more details about COMMAND. Possible Values: /path/to/command

--optimize-concurrent-downloads[=true|false|<A>:<B>]¶

Optimizes the number of concurrent downloads according to the bandwidth available. aria2 uses the download speed observed in the previous downloads to adapt the number of downloads launched in parallel according to the rule N = A + B Log10(speed in Mbps). The coefficients A and B can be customized in the option arguments with A and B separated by a colon. The default values (A=5, B=25) lead to using typically 5 parallel downloads on 1Mbps networks and above 50 on 100Mbps networks. The number of parallel downloads remains constrained under the maximum defined by the --max-concurrent-downloads parameter. Default: false

--piece-length=<LENGTH>¶

Set a piece length for HTTP/FTP downloads. This is the boundary when aria2 splits a file. All splits occur at multiple of this length. This option will be ignored in BitTorrent downloads. It will be also ignored if Metalink file contains piece hashes. Default: 1M

Note

The possible use case of --piece-length option is change the request range in one HTTP pipelined request. To enable HTTP pipelining use --enable-http-pipelining.

--show-console-readout[=true|false]¶

Show console readout. Default: true

--stderr[=true|false]¶

Redirect all console output that would be otherwise printed in stdout to stderr. Default: false

--summary-interval=<SEC>¶

Set interval in seconds to output download progress summary. Setting 0 suppresses the output. Default: 60

Note

In multi file torrent downloads, the files adjacent forward to the specified files are also allocated if they share the same piece.

-Z, --force-sequential[=true|false]¶

Fetch URIs in the command-line sequentially and download each URI in a separate session, like the usual command-line download utilities. Default: false

--max-overall-download-limit=<SPEED>¶

Set max overall download speed in bytes/sec. 0 means unrestricted. You can append K or M (1K = 1024, 1M = 1024K). To limit the download speed per download, use --max-download-limit option. Default: 0

--max-download-limit=<SPEED>¶

Set max download speed per each download in bytes/sec. 0 means unrestricted. You can append K or M (1K = 1024, 1M = 1024K). To limit the overall download speed, use --max-overall-download-limit option. Default: 0

--no-conf[=true|false]¶

Disable loading aria2.conf file.

--no-file-allocation-limit=<SIZE>¶

No file allocation is made for files whose size is smaller than SIZE. You can append K or M (1K = 1024, 1M = 1024K). Default: 5M

-P, --parameterized-uri[=true|false]¶

Enable parameterized URI support. You can specify set of parts: http://{sv1,sv2,sv3}/foo.iso. Also you can specify numeric sequences with step counter: http://host/image[000-100:2].img. A step counter can be omitted. If all URIs do not point to the same file, such as the second example above, -Z option is required. Default: false

-q, --quiet[=true|false]¶

Make aria2 quiet (no console output). Default: false

--realtime-chunk-checksum[=true|false]¶

Validate chunk of data by calculating checksum while downloading a file if chunk checksums are provided. Default: true

--remove-control-file[=true|false]¶

Remove control file before download. Using with --allow-overwrite=true, download always starts from scratch. This will be useful for users behind proxy server which disables resume.

--save-session=<FILE>¶

Save error/unfinished downloads to FILE on exit. You can pass this output file to aria2c with --input-file option on restart. If you like the output to be gzipped append a .gz extension to the file name. Please note that downloads added by aria2.addTorrent() and aria2.addMetalink() RPC method and whose meta data could not be saved as a file are not saved. Downloads removed using aria2.remove() and aria2.forceRemove() will not be saved. GID is also saved with gid, but there are some restrictions, see below.

Note

Normally, GID of the download itself is saved. But some downloads use meta data (e.g., BitTorrent and Metalink). In this case, there are some restrictions.

magnet URI, and followed by torrent download

GID of BitTorrent meta data download is saved.

URI to torrent file, and followed by torrent download

GID of torrent file download is saved.

URI to metalink file, and followed by file downloads described in metalink file

GID of metalink file download is saved.

local torrent file

GID of torrent download is saved.

local metalink file

Any meaningful GID is not saved.

--save-session-interval=<SEC>¶

Save error/unfinished downloads to a file specified by --save-session option every SEC seconds. If 0 is given, file will be saved only when aria2 exits. Default: 0

--socket-recv-buffer-size=<SIZE>¶

Set the maximum socket receive buffer in bytes. Specifing 0 will disable this option. This value will be set to socket file descriptor using SO_RCVBUF socket option with setsockopt() call. Default: 0

--stop=<SEC>¶

Stop application after SEC seconds has passed. If 0 is given, this feature is disabled. Default: 0

--stop-with-process=<PID>¶

Stop application when process PID is not running. This is useful if aria2 process is forked from a parent process. The parent process can fork aria2 with its own pid and when parent process exits for some reason, aria2 can detect it and shutdown itself.

--truncate-console-readout[=true|false]¶

Truncate console readout to fit in a single line. Default: true

-v, --version¶

Print the version number, copyright and the configuration information and exit.

Notes for Options¶

URI, MAGNET, TORRENT_FILE, METALINK_FILE¶

You can specify multiple URIs in command-line. Unless you specify --force-sequential option, all URIs must point to the same file or downloading will fail.

You can specify arbitrary number of BitTorrent Magnet URI. Please note that they are always treated as a separate download. Both hex encoded 40 characters Info Hash and Base32 encoded 32 characters Info Hash are supported. The multiple tr parameters are supported. Because BitTorrent Magnet URI is likely to contain & character, it is highly recommended to always quote URI with single(') or double(") quotation. It is strongly recommended to enable DHT especially when tr parameter is missing. See http://www.bittorrent.org/beps/bep_0009.html for more details about BitTorrent Magnet URI.

You can also specify arbitrary number of torrent files and Metalink documents stored on a local drive. Please note that they are always treated as a separate download. Both Metalink4 and Metalink version 3.0 are supported.

You can specify both torrent file with -T option and URIs. By doing this, you can download a file from both torrent swarm and HTTP(S)/FTP/SFTP server at the same time, while the data from HTTP(S)/FTP/SFTP are uploaded to the torrent swarm. For single file torrents, URI can be a complete URI pointing to the resource or if URI ends with /, name in torrent file in torrent is added. For multi-file torrents, name and path are added to form a URI for each file.

Resuming Download¶

Usually, you can resume transfer by just issuing same command (aria2c URI) if the previous transfer is made by aria2.

If the previous transfer is made by a browser or wget like sequential download manager, then use --continue option to continue the transfer.

Event Hook¶

aria2 provides options to specify arbitrary command after specific event occurred. Currently following options are available: --on-bt-download-complete, --on-download-pause, --on-download-complete. --on-download-start, --on-download-error, --on-download-stop.

aria2 passes 3 arguments to specified command when it is executed. These arguments are: GID, the number of files and file path. For HTTP, FTP, and SFTP downloads, usually the number of files is 1. BitTorrent download can contain multiple files. If number of files is more than one, file path is first one. In other words, this is the value of path key of first struct whose selected key is true in the response of aria2.getFiles() RPC method. If you want to get all file paths, consider to use JSON-RPC/XML-RPC. Please note that file path may change during download in HTTP because of redirection or Content-Disposition header.

Let’s see an example of how arguments are passed to command:

$ cat hook.sh
#!/bin/sh
echo "Called with [$1] [$2] [$3]"
$ aria2c --on-download-complete hook.sh http://example.org/file.iso
Called with [1] [1] [/path/to/file.iso]

aria2.conf¶

By default, aria2 checks whether the legacy path $HOME/.aria2/aria2.conf is present, otherwise it parses $XDG_CONFIG_HOME/aria2/aria2.conf as its configuration file. You can specify the path to configuration file using --conf-path option. If you don’t want to use the configuration file, use --no-conf option.

The configuration file is a text file and has 1 option per each line. In each line, you can specify name-value pair in the format: NAME=VALUE, where name is the long command-line option name without -- prefix. You can use same syntax for the command-line option. The lines beginning # are treated as comments:

# sample configuration file for aria2c
listen-port=60000
dht-listen-port=60000
seed-ratio=1.0
max-upload-limit=50K
ftp-pasv=true

dht.dat¶

Unless the legacy file paths $HOME/.aria2/dht.dat and $HOME/.aria2/dht6.dat are pointing to existing files, the routing table of IPv4 DHT is saved to the path $XDG_CACHE_HOME/aria2/dht.dat and the routing table of IPv6 DHT is saved to the path $XDG_CACHE_HOME/aria2/dht6.dat.

Netrc¶

Netrc support is enabled by default for HTTP(S)/FTP/SFTP. To disable netrc support, specify --no-netrc option. Your .netrc file should have correct permissions(600).

If machine name starts ., aria2 performs domain-match instead of exact match. This is an extension of aria2. For example of domain match, imagine the following .netrc entry:

machine .example.org login myid password mypasswd

aria2.example.org domain-matches .example.org and uses myid and mypasswd.

Some domain-match example follow: example.net does not domain-match .example.org. example.org does not domain-match .example.org because of preceding .. If you want to match example.org, specify example.org.

Control File¶

aria2 uses a control file to track the progress of a download. A control file is placed in the same directory as the downloading file and its file name is the file name of downloading file with .aria2 appended. For example, if you are downloading file.zip, then the control file should be file.zip.aria2. (There is a exception for this naming convention. If you are downloading a multi torrent, its control file is the “top directory” name of the torrent with .aria2 appended. The “top directory” name is a value of “name” key in “info” directory in a torrent file.)

Usually a control file is deleted once download completed. If aria2 decides that download cannot be resumed(for example, when downloading a file from a HTTP server which doesn’t support resume), a control file is not created.

Normally if you lose a control file, you cannot resume download. But if you have a torrent or metalink with chunk checksums for the file, you can resume the download without a control file by giving -V option to aria2c in command-line.

Input File¶

The input file can contain a list of URIs for aria2 to download. You can specify multiple URIs for a single entity: separate URIs on a single line using the TAB character.

Each line is treated as if it is provided in command-line argument. Therefore they are affected by --force-sequential and --parameterized-uri options.

Since URIs in the input file are directly read by aria2, they must not be quoted with single(') or double(") quotation.

Lines starting with # are treated as comments and skipped.

Additionally, the following options can be specified after each line of URIs. These optional lines must start with white space(s).

These options have exactly same meaning of the ones in the command-line options, but it just applies to the URIs it belongs to. Please note that for options in input file -- prefix must be stripped.

For example, the content of uri.txt is:

http://server/file.iso http://mirror/file.iso
  dir=/iso_images
  out=file.img
http://foo/bar

If aria2 is executed with -i uri.txt -d /tmp options, then file.iso is saved as /iso_images/file.img and it is downloaded from http://server/file.iso and http://mirror/file.iso. The file bar is downloaded from http://foo/bar and saved as /tmp/bar.

In some cases, out parameter has no effect. See note of --out option for the restrictions.

Server Performance Profile¶

This section describes the format of server performance profile. The file is plain text and each line has several NAME=VALUE pair, delimited by comma. Currently following NAMEs are recognized:

host

Host name of the server. Required.

protocol

Protocol for this profile, such as ftp, http. Required.

dl_speed

The average download speed observed in the previous download in bytes per sec. Required.

sc_avg_speed

The average download speed observed in the previous download in bytes per sec. This value is only updated if the download is done in single connection environment and only used by AdaptiveURISelector. Optional.

mc_avg_speed

The average download speed observed in the previous download in bytes per sec. This value is only updated if the download is done in multi connection environment and only used by AdaptiveURISelector. Optional.

counter

How many times the server is used. Currently this value is only used by AdaptiveURISelector. Optional.

last_updated

Last contact time in GMT with this server, specified in the seconds since the Epoch(00:00:00 on January 1, 1970, UTC). Required.

status

ERROR is set when server cannot be reached or out-of-service or timeout occurred. Otherwise, OK is set.

Those fields must exist in one line. The order of the fields is not significant. You can put pairs other than the above; they are simply ignored.

An example follows:

host=localhost, protocol=http, dl_speed=32000, last_updated=1222491640, status=OK
host=localhost, protocol=ftp, dl_speed=0, last_updated=1222491632, status=ERROR

Terminology¶

GID

The GID (or gid) is a key to manage each download. Each download will be assigned a unique GID. The GID is stored as 64-bit binary value in aria2. For RPC access, it is represented as a hex string of 16 characters (e.g., 2089b05ecca3d829). Normally, aria2 generates this GID for each download, but the user can specify GIDs manually using the --gid option. When querying downloads by GID, you can specify only the prefix of a GID as long as it is unique among others.

RPC authorization secret token¶

As of 1.18.4, in addition to HTTP basic authorization, aria2 provides RPC method-level authorization. In a future release, HTTP basic authorization will be removed and RPC method-level authorization will become mandatory.

To use RPC method-level authorization, the user has to specify an RPC secret authorization token using the --rpc-secret option. For each RPC method call, the caller has to include the token prefixed with token:. Even when the --rpc-secret option is not used, if the first parameter in the RPC method is a string and starts with token:, it will removed from the parameter list before the request is being processed.

For example, if the RPC secret authorization token is $$secret$$, calling aria2.addUri RPC method would have to look like this:

aria2.addUri("token:$$secret$$", ["http://example.org/file"])

The system.multicall RPC method is treated specially. Since the XML-RPC specification only allows a single array as a parameter for this method, we don’t specify the token in the call. Instead, each nested method call has to provide the token as the first parameter as described above.

Methods¶

All code examples are compatible with the Python 2.7 interpreter. For information on the secret parameter, see RPC authorization secret token.

aria2.addUri([secret, ]uris[, options[, position]])¶

This method adds a new download. uris is an array of HTTP/FTP/SFTP/BitTorrent URIs (strings) pointing to the same resource. If you mix URIs pointing to different resources, then the download may fail or be corrupted without aria2 complaining. When adding BitTorrent Magnet URIs, uris must have only one element and it should be BitTorrent Magnet URI. options is a struct and its members are pairs of option name and value. See Options below for more details. If position is given, it must be an integer starting from 0. The new download will be inserted at position in the waiting queue. If position is omitted or position is larger than the current size of the queue, the new download is appended to the end of the queue. This method returns the GID of the newly registered download.

JSON-RPC Example

The following example adds http://example.org/file:

>>> import urllib2, json
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.addUri',
...                       'params':[['http://example.org/file']]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"qwer","jsonrpc":"2.0","result":"2089b05ecca3d829"}'

XML-RPC Example

The following example adds http://example.org/file:

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.addUri(['http://example.org/file'])
'2089b05ecca3d829'

The following example adds a new download with two sources and some options:

>>> s.aria2.addUri(['http://example.org/file', 'http://mirror/file'],
                    dict(dir="/tmp"))
'd2703803b52216d1'

The following example adds a download and inserts it to the front of the queue:

>>> s.aria2.addUri(['http://example.org/file'], {}, 0)
'ca3d829cee549a4d'

aria2.addTorrent([secret, ]torrent[, uris[, options[, position]]])¶

This method adds a BitTorrent download by uploading a “.torrent” file. If you want to add a BitTorrent Magnet URI, use the aria2.addUri() method instead. torrent must be a base64-encoded string containing the contents of the “.torrent” file. uris is an array of URIs (string). uris is used for Web-seeding. For single file torrents, the URI can be a complete URI pointing to the resource; if URI ends with /, name in torrent file is added. For multi-file torrents, name and path in torrent are added to form a URI for each file. options is a struct and its members are pairs of option name and value. See Options below for more details. If position is given, it must be an integer starting from 0. The new download will be inserted at position in the waiting queue. If position is omitted or position is larger than the current size of the queue, the new download is appended to the end of the queue. This method returns the GID of the newly registered download. If --rpc-save-upload-metadata is true, the uploaded data is saved as a file named as the hex string of SHA-1 hash of data plus “.torrent” in the directory specified by --dir option. E.g. a file name might be 0a3893293e27ac0490424c06de4d09242215f0a6.torrent. If a file with the same name already exists, it is overwritten! If the file cannot be saved successfully or --rpc-save-upload-metadata is false, the downloads added by this method are not saved by --save-session.

The following examples add local file file.torrent.

JSON-RPC Example

>>> import urllib2, json, base64
>>> torrent = base64.b64encode(open('file.torrent').read())
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'asdf',
...                       'method':'aria2.addTorrent', 'params':[torrent]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"asdf","jsonrpc":"2.0","result":"2089b05ecca3d829"}'

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.addTorrent(xmlrpclib.Binary(open('file.torrent', mode='rb').read()))
'2089b05ecca3d829'

aria2.addMetalink([secret, ]metalink[, options[, position]])¶

This method adds a Metalink download by uploading a “.metalink” file. metalink is a base64-encoded string which contains the contents of the “.metalink” file. options is a struct and its members are pairs of option name and value. See Options below for more details. If position is given, it must be an integer starting from 0. The new download will be inserted at position in the waiting queue. If position is omitted or position is larger than the current size of the queue, the new download is appended to the end of the queue. This method returns an array of GIDs of newly registered downloads. If --rpc-save-upload-metadata is true, the uploaded data is saved as a file named hex string of SHA-1 hash of data plus “.metalink” in the directory specified by --dir option. E.g. a file name might be 0a3893293e27ac0490424c06de4d09242215f0a6.metalink. If a file with the same name already exists, it is overwritten! If the file cannot be saved successfully or --rpc-save-upload-metadata is false, the downloads added by this method are not saved by --save-session.

The following examples add local file file.meta4.

JSON-RPC Example

>>> import urllib2, json, base64
>>> metalink = base64.b64encode(open('file.meta4').read())
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.addMetalink',
...                       'params':[metalink]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"qwer","jsonrpc":"2.0","result":["2089b05ecca3d829"]}'

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.addMetalink(xmlrpclib.Binary(open('file.meta4', mode='rb').read()))
['2089b05ecca3d829']

aria2.remove([secret, ]gid)¶

This method removes the download denoted by gid (string). If the specified download is in progress, it is first stopped. The status of the removed download becomes removed. This method returns GID of removed download.

The following examples remove a download with GID#2089b05ecca3d829.

JSON-RPC Example

>>> import urllib2, json
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.remove',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"qwer","jsonrpc":"2.0","result":"2089b05ecca3d829"}'

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.remove('2089b05ecca3d829')
'2089b05ecca3d829'

aria2.forceRemove([secret, ]gid)¶

This method removes the download denoted by gid. This method behaves just like aria2.remove() except that this method removes the download without performing any actions which take time, such as contacting BitTorrent trackers to unregister the download first.

aria2.pause([secret, ]gid)¶

This method pauses the download denoted by gid (string). The status of paused download becomes paused. If the download was active, the download is placed in the front of waiting queue. While the status is paused, the download is not started. To change status to waiting, use the aria2.unpause() method. This method returns GID of paused download.

aria2.pauseAll([secret])¶

This method is equal to calling aria2.pause() for every active/waiting download. This methods returns OK.

aria2.forcePause([secret, ]gid)¶

This method pauses the download denoted by gid. This method behaves just like aria2.pause() except that this method pauses downloads without performing any actions which take time, such as contacting BitTorrent trackers to unregister the download first.

aria2.forcePauseAll([secret])¶

This method is equal to calling aria2.forcePause() for every active/waiting download. This methods returns OK.

aria2.unpause([secret, ]gid)¶

This method changes the status of the download denoted by gid (string) from paused to waiting, making the download eligible to be restarted. This method returns the GID of the unpaused download.

aria2.unpauseAll([secret])¶

This method is equal to calling aria2.unpause() for every active/waiting download. This methods returns OK.

aria2.tellStatus([secret, ]gid[, keys])¶

This method returns the progress of the download denoted by gid (string). keys is an array of strings. If specified, the response contains only keys in the keys array. If keys is empty or omitted, the response contains all keys. This is useful when you just want specific keys and avoid unnecessary transfers. For example, aria2.tellStatus("2089b05ecca3d829", ["gid", "status"]) returns the gid and status keys only. The response is a struct and contains following keys. Values are strings.

gid

GID of the download.

status

active for currently downloading/seeding downloads. waiting for downloads in the queue; download is not started. paused for paused downloads. error for downloads that were stopped because of error. complete for stopped and completed downloads. removed for the downloads removed by user.

totalLength

Total length of the download in bytes.

completedLength

Completed length of the download in bytes.

uploadLength

Uploaded length of the download in bytes.

bitfield

Hexadecimal representation of the download progress. The highest bit corresponds to the piece at index 0. Any set bits indicate loaded pieces, while unset bits indicate not yet loaded and/or missing pieces. Any overflow bits at the end are set to zero. When the download was not started yet, this key will not be included in the response.

downloadSpeed

Download speed of this download measured in bytes/sec.

uploadSpeed

Upload speed of this download measured in bytes/sec.

infoHash

InfoHash. BitTorrent only.

numSeeders

The number of seeders aria2 has connected to. BitTorrent only.

seeder

true if the local endpoint is a seeder. Otherwise false. BitTorrent only.

pieceLength

Piece length in bytes.

numPieces

The number of pieces.

connections

The number of peers/servers aria2 has connected to.

errorCode

The code of the last error for this item, if any. The value is a string. The error codes are defined in the EXIT STATUS section. This value is only available for stopped/completed downloads.

errorMessage

The (hopefully) human readable error message associated to errorCode.

followedBy

List of GIDs which are generated as the result of this download. For example, when aria2 downloads a Metalink file, it generates downloads described in the Metalink (see the --follow-metalink option). This value is useful to track auto-generated downloads. If there are no such downloads, this key will not be included in the response.

following

The reverse link for followedBy. A download included in followedBy has this object’s GID in its following value.

belongsTo

GID of a parent download. Some downloads are a part of another download. For example, if a file in a Metalink has BitTorrent resources, the downloads of “.torrent” files are parts of that parent. If this download has no parent, this key will not be included in the response.

dir

Directory to save files.

files

Returns the list of files. The elements of this list are the same structs used in aria2.getFiles() method.

bittorrent

Struct which contains information retrieved from the .torrent (file). BitTorrent only. It contains following keys.

announceList

List of lists of announce URIs. If the torrent contains announce and no announce-list, announce is converted to the announce-list format.

comment

The comment of the torrent. comment.utf-8 is used if available.

creationDate

The creation time of the torrent. The value is an integer since the epoch, measured in seconds.

mode

File mode of the torrent. The value is either single or multi.

info

Struct which contains data from Info dictionary. It contains following keys.

name

name in info dictionary. name.utf-8 is used if available.

verifiedLength

The number of verified number of bytes while the files are being hash checked. This key exists only when this download is being hash checked.

verifyIntegrityPending

true if this download is waiting for the hash check in a queue. This key exists only when this download is in the queue.

JSON-RPC Example

The following example gets information about a download with GID#2089b05ecca3d829:

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.tellStatus',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': {u'bitfield': u'0000000000',
             u'completedLength': u'901120',
             u'connections': u'1',
             u'dir': u'/downloads',
             u'downloadSpeed': u'15158',
             u'files': [{u'index': u'1',
                         u'length': u'34896138',
                         u'completedLength': u'34896138',
                         u'path': u'/downloads/file',
                         u'selected': u'true',
                         u'uris': [{u'status': u'used',
                                    u'uri': u'http://example.org/file'}]}],
             u'gid': u'2089b05ecca3d829',
             u'numPieces': u'34',
             u'pieceLength': u'1048576',
             u'status': u'active',
             u'totalLength': u'34896138',
             u'uploadLength': u'0',
             u'uploadSpeed': u'0'}}

The following example gets only specific keys:

>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.tellStatus',
...                       'params':['2089b05ecca3d829',
...                                 ['gid',
...                                  'totalLength',
...                                  'completedLength']]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': {u'completedLength': u'5701632',
             u'gid': u'2089b05ecca3d829',
             u'totalLength': u'34896138'}}

XML-RPC Example

The following example gets information about a download with GID#2089b05ecca3d829:

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.tellStatus('2089b05ecca3d829')
>>> pprint(r)
{'bitfield': 'ffff80',
 'completedLength': '34896138',
 'connections': '0',
 'dir': '/downloads',
 'downloadSpeed': '0',
 'errorCode': '0',
 'files': [{'index': '1',
            'length': '34896138',
            'completedLength': '34896138',
            'path': '/downloads/file',
            'selected': 'true',
            'uris': [{'status': 'used',
                      'uri': 'http://example.org/file'}]}],
 'gid': '2089b05ecca3d829',
 'numPieces': '17',
 'pieceLength': '2097152',
 'status': 'complete',
 'totalLength': '34896138',
 'uploadLength': '0',
 'uploadSpeed': '0'}

The following example gets only specific keys:

>>> r = s.aria2.tellStatus('2089b05ecca3d829', ['gid', 'totalLength', 'completedLength'])
>>> pprint(r)
{'completedLength': '34896138', 'gid': '2089b05ecca3d829', 'totalLength': '34896138'}

aria2.getUris([secret, ]gid)¶

This method returns the URIs used in the download denoted by gid (string). The response is an array of structs and it contains following keys. Values are string.

uri

URI

status

‘used’ if the URI is in use. ‘waiting’ if the URI is still waiting in the queue.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.getUris',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': [{u'status': u'used',
              u'uri': u'http://example.org/file'}]}

XML-RPC Example

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getUris('2089b05ecca3d829')
>>> pprint(r)
[{'status': 'used', 'uri': 'http://example.org/file'}]

aria2.getFiles([secret, ]gid)¶

This method returns the file list of the download denoted by gid (string). The response is an array of structs which contain following keys. Values are strings.

index

Index of the file, starting at 1, in the same order as files appear in the multi-file torrent.

path

File path.

length

File size in bytes.

completedLength

Completed length of this file in bytes. Please note that it is possible that sum of completedLength is less than the completedLength returned by the aria2.tellStatus() method. This is because completedLength in aria2.getFiles() only includes completed pieces. On the other hand, completedLength in aria2.tellStatus() also includes partially completed pieces.

selected

true if this file is selected by --select-file option. If --select-file is not specified or this is single-file torrent or not a torrent download at all, this value is always true. Otherwise false.

uris

Returns a list of URIs for this file. The element type is the same struct used in the aria2.getUris() method.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.getFiles',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': [{u'index': u'1',
              u'length': u'34896138',
              u'completedLength': u'34896138',
              u'path': u'/downloads/file',
              u'selected': u'true',
              u'uris': [{u'status': u'used',
                         u'uri': u'http://example.org/file'}]}]}

XML-RPC Example

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getFiles('2089b05ecca3d829')
>>> pprint(r)
[{'index': '1',
  'length': '34896138',
  'completedLength': '34896138',
  'path': '/downloads/file',
  'selected': 'true',
  'uris': [{'status': 'used',
            'uri': 'http://example.org/file'}]}]

aria2.getPeers([secret, ]gid)¶

This method returns a list peers of the download denoted by gid (string). This method is for BitTorrent only. The response is an array of structs and contains the following keys. Values are strings.

peerId

Percent-encoded peer ID.

ip

IP address of the peer.

port

Port number of the peer.

bitfield

Hexadecimal representation of the download progress of the peer. The highest bit corresponds to the piece at index 0. Set bits indicate the piece is available and unset bits indicate the piece is missing. Any spare bits at the end are set to zero.

amChoking

true if aria2 is choking the peer. Otherwise false.

peerChoking

true if the peer is choking aria2. Otherwise false.

downloadSpeed

Download speed (byte/sec) that this client obtains from the peer.

uploadSpeed

Upload speed(byte/sec) that this client uploads to the peer.

seeder

true if this peer is a seeder. Otherwise false.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.getPeers',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': [{u'amChoking': u'true',
              u'bitfield': u'ffffffffffffffffffffffffffffffffffffffff',
              u'downloadSpeed': u'10602',
              u'ip': u'10.0.0.9',
              u'peerChoking': u'false',
              u'peerId': u'aria2%2F1%2E10%2E5%2D%87%2A%EDz%2F%F7%E6',
              u'port': u'6881',
              u'seeder': u'true',
              u'uploadSpeed': u'0'},
             {u'amChoking': u'false',
              u'bitfield': u'ffffeff0fffffffbfffffff9fffffcfff7f4ffff',
              u'downloadSpeed': u'8654',
              u'ip': u'10.0.0.30',
              u'peerChoking': u'false',
              u'peerId': u'bittorrent client758',
              u'port': u'37842',
              u'seeder': u'false',
              u'uploadSpeed': u'6890'}]}

XML-RPC Example

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getPeers('2089b05ecca3d829')
>>> pprint(r)
[{'amChoking': 'true',
  'bitfield': 'ffffffffffffffffffffffffffffffffffffffff',
  'downloadSpeed': '10602',
  'ip': '10.0.0.9',
  'peerChoking': 'false',
  'peerId': 'aria2%2F1%2E10%2E5%2D%87%2A%EDz%2F%F7%E6',
  'port': '6881',
  'seeder': 'true',
  'uploadSpeed': '0'},
 {'amChoking': 'false',
  'bitfield': 'ffffeff0fffffffbfffffff9fffffcfff7f4ffff',
  'downloadSpeed': '8654',
  'ip': '10.0.0.30',
  'peerChoking': 'false',
  'peerId': 'bittorrent client758',
  'port': '37842',
  'seeder': 'false,
  'uploadSpeed': '6890'}]

aria2.getServers([secret, ]gid)¶

This method returns currently connected HTTP(S)/FTP/SFTP servers of the download denoted by gid (string). The response is an array of structs and contains the following keys. Values are strings.

index

Index of the file, starting at 1, in the same order as files appear in the multi-file metalink.

servers

A list of structs which contain the following keys.

uri

Original URI.

currentUri

This is the URI currently used for downloading. If redirection is involved, currentUri and uri may differ.

downloadSpeed

Download speed (byte/sec)

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.getServers',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': [{u'index': u'1',
              u'servers': [{u'currentUri': u'http://example.org/file',
                            u'downloadSpeed': u'10467',
                            u'uri': u'http://example.org/file'}]}]}

XML-RPC Example

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getServers('2089b05ecca3d829')
>>> pprint(r)
[{'index': '1',
  'servers': [{'currentUri': 'http://example.org/dl/file',
               'downloadSpeed': '20285',
               'uri': 'http://example.org/file'}]}]

aria2.tellActive([secret][, keys])¶

This method returns a list of active downloads. The response is an array of the same structs as returned by the aria2.tellStatus() method. For the keys parameter, please refer to the aria2.tellStatus() method.

aria2.tellWaiting([secret, ]offset, num[, keys])¶

This method returns a list of waiting downloads, including paused ones. offset is an integer and specifies the offset from the download waiting at the front. num is an integer and specifies the max. number of downloads to be returned. For the keys parameter, please refer to the aria2.tellStatus() method.

If offset is a positive integer, this method returns downloads in the range of [offset, offset + num).

offset can be a negative integer. offset == -1 points last download in the waiting queue and offset == -2 points the download before the last download, and so on. Downloads in the response are in reversed order then.

For example, imagine three downloads “A”,”B” and “C” are waiting in this order. aria2.tellWaiting(0, 1) returns ["A"]. aria2.tellWaiting(1, 2) returns ["B", "C"]. aria2.tellWaiting(-1, 2) returns ["C", "B"].

The response is an array of the same structs as returned by aria2.tellStatus() method.

aria2.tellStopped([secret, ]offset, num[, keys])¶

This method returns a list of stopped downloads. offset is an integer and specifies the offset from the least recently stopped download. num is an integer and specifies the max. number of downloads to be returned. For the keys parameter, please refer to the aria2.tellStatus() method.

offset and num have the same semantics as described in the aria2.tellWaiting() method.

The response is an array of the same structs as returned by the aria2.tellStatus() method.

aria2.changePosition([secret, ]gid, pos, how)¶

This method changes the position of the download denoted by gid in the queue. pos is an integer. how is a string. If how is POS_SET, it moves the download to a position relative to the beginning of the queue. If how is POS_CUR, it moves the download to a position relative to the current position. If how is POS_END, it moves the download to a position relative to the end of the queue. If the destination position is less than 0 or beyond the end of the queue, it moves the download to the beginning or the end of the queue respectively. The response is an integer denoting the resulting position.

For example, if GID#2089b05ecca3d829 is currently in position 3, aria2.changePosition('2089b05ecca3d829', -1, 'POS_CUR') will change its position to 2. Additionally aria2.changePosition('2089b05ecca3d829', 0, 'POS_SET') will change its position to 0 (the beginning of the queue).

The following examples move the download GID#2089b05ecca3d829 to the front of the queue.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.changePosition',
...                       'params':['2089b05ecca3d829', 0, 'POS_SET']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': 0}

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.changePosition('2089b05ecca3d829', 0, 'POS_SET')
0

aria2.changeUri([secret, ]gid, fileIndex, delUris, addUris[, position])¶

This method removes the URIs in delUris from and appends the URIs in addUris to download denoted by gid. delUris and addUris are lists of strings. A download can contain multiple files and URIs are attached to each file. fileIndex is used to select which file to remove/attach given URIs. fileIndex is 1-based. position is used to specify where URIs are inserted in the existing waiting URI list. position is 0-based. When position is omitted, URIs are appended to the back of the list. This method first executes the removal and then the addition. position is the position after URIs are removed, not the position when this method is called. When removing an URI, if the same URIs exist in download, only one of them is removed for each URI in delUris. In other words, if there are three URIs http://example.org/aria2 and you want remove them all, you have to specify (at least) 3 http://example.org/aria2 in delUris. This method returns a list which contains two integers. The first integer is the number of URIs deleted. The second integer is the number of URIs added.

The following examples add the URI http://example.org/file to the file whose index is 1 and belongs to the download GID#2089b05ecca3d829.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.changeUri',
...                       'params':['2089b05ecca3d829', 1, [],
                                    ['http://example.org/file']]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': [0, 1]}

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.changeUri('2089b05ecca3d829', 1, [],
                      ['http://example.org/file'])
[0, 1]

aria2.getOption([secret, ]gid)¶

This method returns options of the download denoted by gid. The response is a struct where keys are the names of options. The values are strings. Note that this method does not return options which have no default value and have not been set on the command-line, in configuration files or RPC methods.

The following examples get options of the download GID#2089b05ecca3d829.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.getOption',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': {u'allow-overwrite': u'false',
             u'allow-piece-length-change': u'false',
             u'always-resume': u'true',
             u'async-dns': u'true',
 ...

XML-RPC Example

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getOption('2089b05ecca3d829')
>>> pprint(r)
{'allow-overwrite': 'false',
 'allow-piece-length-change': 'false',
 'always-resume': 'true',
 'async-dns': 'true',
 ....

aria2.changeOption([secret, ]gid, options)¶

This method changes options of the download denoted by gid (string) dynamically. options is a struct. The following options are available for active downloads:

• bt-max-peers

• bt-request-peer-speed-limit

• bt-remove-unselected-file

• force-save

• max-download-limit

• max-upload-limit

For waiting or paused downloads, in addition to the above options, options listed in Input File subsection are available, except for following options: dry-run, metalink-base-uri, parameterized-uri, pause, piece-length and rpc-save-upload-metadata option. This method returns OK for success.

The following examples set the max-download-limit option to 20K for the download GID#2089b05ecca3d829.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.changeOption',
...                       'params':['2089b05ecca3d829',
...                                 {'max-download-limit':'10K'}]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': u'OK'}

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.changeOption('2089b05ecca3d829', {'max-download-limit':'20K'})
'OK'

aria2.getGlobalOption([secret])¶

This method returns the global options. The response is a struct. Its keys are the names of options. Values are strings. Note that this method does not return options which have no default value and have not been set on the command-line, in configuration files or RPC methods. Because global options are used as a template for the options of newly added downloads, the response contains keys returned by the aria2.getOption() method.

aria2.changeGlobalOption([secret, ]options)¶

This method changes global options dynamically. options is a struct. The following options are available:

• bt-max-open-files

• download-result

• log

• log-level

• max-concurrent-downloads

• max-download-result

• max-overall-download-limit

• max-overall-upload-limit

• optimize-concurrent-downloads

• save-cookies

• save-session

• server-stat-of

In addition, options listed in the Input File subsection are available, except for following options: checksum, index-out, out, pause and select-file.

With the log option, you can dynamically start logging or change log file. To stop logging, specify an empty string(“”) as the parameter value. Note that log file is always opened in append mode. This method returns OK for success.

aria2.getGlobalStat([secret])¶

This method returns global statistics such as the overall download and upload speeds. The response is a struct and contains the following keys. Values are strings.

downloadSpeed

Overall download speed (byte/sec).

uploadSpeed

Overall upload speed(byte/sec).

numActive

The number of active downloads.

numWaiting

The number of waiting downloads.

numStopped

The number of stopped downloads in the current session. This value is capped by the --max-download-result option.

numStoppedTotal

The number of stopped downloads in the current session and not capped by the --max-download-result option.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.getGlobalStat'})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
 u'jsonrpc': u'2.0',
 u'result': {u'downloadSpeed': u'21846',
             u'numActive': u'2',
             u'numStopped': u'0',
             u'numWaiting': u'0',
             u'uploadSpeed': u'0'}}

XML-RPC Example

>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getGlobalStat()
>>> pprint(r)
{'downloadSpeed': '23136',
 'numActive': '2',
 'numStopped': '0',
 'numWaiting': '0',
 'uploadSpeed': '0'}

aria2.purgeDownloadResult([secret])¶

This method purges completed/error/removed downloads to free memory. This method returns OK.

aria2.removeDownloadResult([secret, ]gid)¶

This method removes a completed/error/removed download denoted by gid from memory. This method returns OK for success.

The following examples remove the download result of the download GID#2089b05ecca3d829.

JSON-RPC Example

>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
...                       'method':'aria2.removeDownloadResult',
...                       'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': u'OK'}

XML-RPC Example

>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.removeDownloadResult('2089b05ecca3d829')
'OK'