ARIA2C(1) aria2 ARIA2C(1)NAMEaria2c - The ultra fast download utility
SYNOPSISaria2c [<OPTIONS>] [<URI>|<MAGNET>|<TORRENT_FILE>|<METALINK_FILE>] ...
DESCRIPTION
aria2 is a utility for downloading files. The supported protocols are
HTTP(S), FTP, BitTorrent, and Metalink. aria2 can download a file from
multiple sources/protocols and tries to utilize your maximum download
bandwidth. It supports downloading a file from HTTP(S)/FTP and BitTor‐
rent at the same time, while the data downloaded from HTTP(S)/FTP is
uploaded to the BitTorrent swarm. Using Metalink's chunk checksums,
aria2 automatically validates chunks of data while downloading a file
like BitTorrent.
OPTIONS
Basic Options
-d, --dir=<DIR>
The directory to store the downloaded file.
-i, --input-file=<FILE>
Downloads URIs found in FILE. You can specify multiple URIs for
a single entity: separate URIs on a single line using the TAB
character. Reads input from stdin when - is specified. Addi‐
tionally, options can be specified after each line of URI. This
optional line must start with one or more white spaces and have
one option per single line. The input file can use gzip com‐
pression. See Input File subsection for details. See also
--deferred-input option.
-l, --log=<LOG>
The file name of the log file. If - is specified, log is written
to stdout. If empty string("") is specified, log is not written
to file.
-j, --max-concurrent-downloads=<N>
Set maximum number of parallel downloads for every static
(HTTP/FTP) URI, torrent and metalink. See also --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, Met‐
alink 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 down‐
loads.
-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, #depre‐
cated, #help, #all Default: #basic
HTTP/FTP Options
--all-proxy=<PROXY>
Use this proxy server for all protocols. To erase previously
defined proxy, use "". You can override this setting and spec‐
ify a proxy server for a particular protocol using --http-proxy,
--https-proxy and --ftp-proxy options. This affects all URIs.
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 appeared later have precedence. For example, you have
http-proxy-user=myname, http-proxy-passwd=mypass in aria2.conf
and you specify --http-proxy="http://proxy" in command-line,
then you get HTTP proxy http://proxy with user myname and pass‐
word mypass.
Another example: if you specified in command-line
--http-proxy="http://user:pass@proxy" --http-proxy-user="myname"
--http-proxy-passwd="mypass", then you will 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 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 down‐
load. 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.
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
-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 comma separated hostnames, domains and network address
with or without CIDR block where proxy should not be used.
Note For network address with CIDR block, both IPv4 and IPv6
addresses work. Current implementation does not resolve hostname
in URI to compare network address specified in --no-proxy. So it
is only effecive if URI has numeric IP addresses.
-o, --out=<FILE>
The file name of the downloaded file. When --force-sequential
option is used, this option is ignored.
Note In Metalink or BitTorrent download you cannot specify file name.
The file name specified here is only used when the URIs fed to
aria2 are done by command line without --input-file,
--force-sequential option. For 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. With SEC > 0, aria2
will retry download when the HTTP server returns 503 response.
Default: 0
--server-stat-of=<FILE>
Specify the filename 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 filename to load performance profile of the servers.
The loaded data will be used in some URI selector such as feed‐
back. 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
--max-connection-per-server option. See also --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 maxconnections attribute 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 behaviour 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 recon‐
nection 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 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 estab‐
lishing 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 down‐
loads 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 mir‐
rors 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 feed‐
back, it uses a performance profile of servers. Default: feed‐
back
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 mul‐
tiple 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 cer‐
tificates store, aria2 will automatically load those certifi‐
cates at the startup.
--certificate=<FILE>
Use the client certificate in FILE. The certificate must be in
PEM format. You may use --private-key option to specify the
private key.
--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 Con‐
tent-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 username 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 this proxy server for HTTP. To erase previously defined
proxy, use "". See also --all-proxy option. This affects all
URIs. The format of PROXY is [http://][USER:PASS‐
WORD@]HOST[:PORT]
--http-proxy-passwd=<PASSWD>
Set password for --http-proxy option.
--http-proxy-user=<USER>
Set user for --http-proxy option.
--https-proxy=<PROXY>
Use this proxy server for HTTPS. To erase previously defined
proxy, use "". See also --all-proxy option. This affects all
URIs. The format of PROXY is [http://][USER:PASS‐
WORD@]HOST[:PORT]
--https-proxy-passwd=<PASSWD>
Set password for --https-proxy option.
--https-proxy-user=<USER>
Set user for --https-proxy option.
--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 Referer. This affects all URIs. If * is given, each request
URI is used as a referer. This may be useful when used with
--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/Fire‐
fox(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 for‐
mat. If FILE already exists, it is overwritten. Session Cookies
are also saved and their expiry values are treated as 0. Possi‐
ble 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 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 embed‐
ded but password is missing in URI, aria2 tries to resolve pass‐
word 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
--ftp-proxy=<PROXY>
Use this proxy server for FTP. To erase previously defined
proxy, use "". See also --all-proxy option. This affects all
URIs. The format of PROXY is [http://][USER:PASS‐
WORD@]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
--ftp-reuse-connection[=true|false]
Reuse connection in FTP. Default: true
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-enable-lpd[=true|false]
Enable Local Peer Discovery. If a private flag is set in a tor‐
rent, 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 com‐
mand-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-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 incom‐
plete, 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
addres
--bt-max-open-files=<NUM>
Specify maximum number of files to open in each BitTorrent down‐
load. Default: 100
--bt-max-peers=<NUM>
Specify the maximum number of peers per torrent. 0 means unlim‐
ited. See also --bt-request-peer-speed-limit option. Default:
55
--bt-metadata-only[=true|false]
Download metadata only. The file(s) described in metadata 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 key‐
words: 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 Bit‐
Torrent. 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 pre‐
ferred 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 metadata as ".torrent" file. This option has effect only
when BitTorrent Magnet URI is used. The filename 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, metadata 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 com‐
pletely 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
--dht-file-path6=<PATH>
Change the IPv6 DHT routing table file to PATH. Default:
$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 sup‐
port. 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 .tor‐
rent 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 action mentioned above is not taken. 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 mul‐
tiple 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 unre‐
stricted. 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:
aria2/$VERSION-, $VERSION is replaced by package version.
--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 com‐
pleted.
-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 action men‐
tioned above is not taken. 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 mir‐
ror 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 username and password using --rpc-user and --rpc-passwd
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
--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 in PEM format. Use --rpc-private-key option to specify the
private key. Use --rpc-secure option to enable encryption.
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 dia‐
log corresponding to that new certificate. To start aria2c with
--rpc-secure use --rpc-certificate=<SHA-1> and just omit the
--rpc-private-key option.
--rpc-listen-all[=true|false]
Listen incoming JSON-RPC/XML-RPC requests on all network inter‐
faces. If false is given, listen only on local loopback inter‐
face. 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.
--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 metadata in the directory
specified by --dir option. The filename consists of SHA-1 hash
hex string of metadata plus extension. For torrent, the exten‐
sion 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-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.
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 con‐
trol 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-Modi‐
fied-Since header to get only newer file conditionally. When
getting modification time of local file, it uses user supplied
filename(see --out option) or filename 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
--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
--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: 0
--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, percent‐
age of progress and path/URI. The percentage of progress and
path/URI are printed for each requested file in each row.
Default: default
--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 sup‐
port), 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) func‐
tion. 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
--force-save[=true|false]
Save download with --save-session option even if the download is
completed or removed. 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 hostname. Possible Values: interface, IP
address, hostname
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 down‐
load 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-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 sup‐
port resume. If N is 0, aria2 downloads file from scratch when
all given URIs do not support resume. See --always-resume
option. Default: 0
--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 exe‐
cuted. See Event Hook for more details about COMMAND. Possible
Values: /path/to/command
--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 usecase 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
--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 unre‐
stricted. 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
metadata 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 restric‐
tions, see below.
Note Normally, GID of the download itself is saved. But some down‐
loads use metadata (e.g., BitTorrent and Metalink). In this
case, there are some restrictions.
1.
magnet URI, and followed by torrent download
GID of BitTorrent metadata download is saved.
2.
URI to torrent file, and followed by torrent download
GID of torrent file download is saved.
3.
URI to metalink file, and followed by file downloads
described in metalink file
GID of metalink file download is saved.
4.
local torrent file
GID of torrent download is saved.
5.
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
--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 use‐
ful 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 infor‐
mation and exit.
Notes for Options
Optional arguments
The options that have its argument surrounded by square brackets([])
take an optional argument. Usually omiting the argument is evaluated to
true. If you use short form of these options(such as -V) and give an
argument, then the option name and its argument should be concate‐
nated(e.g. -Vfalse). If any spaces are inserted between the option
name and the argument, the argument will be treated as URI and usually
this is not what you expect.
Units (K and M)
Some options takes K and M to conveniently represent 1024 and 1048576
respectively. aria2 detects these characters in case-insensitive way.
In other words, k and m can be used as well as K and M respectively.
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 BitTor‐
rent Magnet URI is likely to contain & character, it is highly recom‐
mended 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
server at the same time, while the data from HTTP(S)/FTP 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.
Note Make sure that URI is quoted with single(') or double(") quota‐
tion if it contains & or any characters that have special mean‐
ing in shell.
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 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, con‐
sider 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]
EXIT STATUS
Because aria2 can handle multiple downloads at once, it encounters lots
of errors in a session. aria2 returns the following exit status based
on the last error encountered.
0 If all downloads were successful.
1 If an unknown error occurred.
2 If time out occurred.
3 If a resource was not found.
4 If aria2 saw the specfied number of "resource not found" error.
See --max-file-not-found option).
5 If a download aborted because download speed was too slow. See
--lowest-speed-limit option)
6 If network problem occurred.
7 If there were unfinished downloads. This error is only reported
if all finished downloads were successful and there were unfin‐
ished downloads in a queue when aria2 exited by pressing Ctrl-C
by an user or sending TERM or INT signal.
8 If remote server did not support resume when resume was required
to complete download.
9 If there was not enough disk space available.
10 If piece length was different from one in .aria2 control file.
See --allow-piece-length-change option.
11 If aria2 was downloading same file at that moment.
12 If aria2 was downloading same info hash torrent at that moment.
13 If file already existed. See --allow-overwrite option.
14 If renaming file failed. See --auto-file-renaming option.
15 If aria2 could not open existing file.
16 If aria2 could not create new file or truncate existing file.
17 If file I/O error occurred.
18 If aria2 could not create directory.
19 If name resolution failed.
20 If aria2 could not parse Metalink document.
21 If FTP command failed.
22 If HTTP response header was bad or unexpected.
23 If too many redirections occurred.
24 If HTTP authorization failed.
25 If aria2 could not parse bencoded file(usually ".torrent" file).
26 If ".torrent" file was corrupted or missing information that
aria2 needed.
27 If Magnet URI was bad.
28 If bad/unrecognized option was given or unexpected option argu‐
ment was given.
29 If the remote server was unable to handle the request due to a
temporary overloading or maintenance.
30 If aria2 could not parse JSON-RPC request.
Note An error occurred in a finished download will not be reported as
exit status.
ENVIRONMENT
aria2 recognizes the following environment variables.
http_proxy [http://][USER:PASSWORD@]HOST[:PORT]
Specify proxy server for use in HTTP. Overrides http-proxy
value in configuration file. The command-line option
--http-proxy overrides this value.
https_proxy [http://][USER:PASSWORD@]HOST[:PORT]
Specify proxy server for use in HTTPS. Overrides https-proxy
value in configuration file. The command-line option
--https-proxy overrides this value.
ftp_proxy [http://][USER:PASSWORD@]HOST[:PORT]
Specify proxy server for use in FTP. Overrides ftp-proxy value
in configuration file. The command-line option --ftp-proxy
overrides this value.
all_proxy [http://][USER:PASSWORD@]HOST[:PORT]
Specify proxy server for use if no protocol-specific proxy is
specified. Overrides all-proxy value in configuration file.
The command-line option --all-proxy overrides this value.
Note Although aria2 accepts ftp:// and https:// scheme in proxy URI,
it simply assumes that http:// is specified and does not change
its behavior based on the specified scheme.
no_proxy [DOMAIN,...]
Specify comma-separated hostname, domains and network address
with or without CIDR block to which proxy should not be used.
Overrides no-proxy value in configuration file. The com‐
mand-line option --no-proxy overrides this value.
FILES
aria2.conf
By default, aria2 parses $HOME/.aria2/aria2.conf as a configuraiton
file. You can specify the path to configuration file using --conf-path
option. If you don't want to use the configuraiton 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
Note The confidential information such as user/password might be
included in the configuration file. It is recommended to change
file mode bits of the configuration file (e.g., chmod 600
aria2.conf), so that other user cannot see the contents of the
file.
dht.dat
By default, the routing table of IPv4 DHT is saved to the path
$HOME/.aria2/dht.dat and the routing table of IPv6 DHT is saved to the
path $HOME/.aria2/dht6.dat.
Netrc
Netrc support is enabled by default for HTTP(S)/FTP. To disable netrc
support, specify --no-netrc option. Your .netrc file should have cor‐
rect 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 con‐
trol file is placed in the same directory as the downloading file and
its filename is the filename 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 con‐
vention. 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 tor‐
rent 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 sin‐
gle 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).
· all-proxy
· all-proxy-passwd
· all-proxy-user
· allow-overwrite
· allow-piece-length-change
· always-resume
· async-dns
· auto-file-renaming
· bt-enable-lpd
· bt-exclude-tracker
· bt-external-ip
· bt-hash-check-seed
· bt-max-open-files
· bt-max-peers
· bt-metadata-only
· bt-min-crypto-level
· bt-prioritize-piece
· bt-remove-unselected-file
· bt-request-peer-speed-limit
· bt-require-crypto
· bt-save-metadata
· bt-seed-unverified
· bt-stop-timeout
· bt-tracker
· bt-tracker-connect-timeout
· bt-tracker-interval
· bt-tracker-timeout
· check-integrity
· checksum
· conditional-get
· connect-timeout
· continue
· dir
· dry-run
· enable-http-keep-alive
· enable-http-pipelining
· enable-mmap
· enable-peer-exchange
· file-allocation
· follow-metalink
· follow-torrent
· force-save
· ftp-passwd
· ftp-pasv
· ftp-proxy
· ftp-proxy-passwd
· ftp-proxy-user
· ftp-reuse-connection
· ftp-type
· ftp-user
· gid
· hash-check-only
· header
· http-accept-gzip
· http-auth-challenge
· http-no-cache
· http-passwd
· http-proxy
· http-proxy-passwd
· http-proxy-user
· http-user
· https-proxy
· https-proxy-passwd
· https-proxy-user
· index-out
· lowest-speed-limit
· max-connection-per-server
· max-download-limit
· max-file-not-found
· max-resume-failure-tries
· max-tries
· max-upload-limit
· metalink-base-uri
· metalink-enable-unique-protocol
· metalink-language
· metalink-location
· metalink-os
· metalink-preferred-protocol
· metalink-version
· min-split-size
· no-file-allocation-limit
· no-netrc
· no-proxy
· out
· parameterized-uri
· pause
· piece-length
· proxy-method
· realtime-chunk-checksum
· referer
· remote-time
· remove-control-file
· retry-wait
· reuse-uri
· rpc-save-upload-metadata
· seed-ratio
· seed-time
· select-file
· split
· stream-piece-selector
· timeout
· uri-selector
· use-head
· user-agent
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 Hostname 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 Adap‐
tiveURISelector. 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 Adap‐
tiveURISelector. 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 sec‐
onds 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
RPC INTERFACE
aria2 provides JSON-RPC over HTTP and XML-RPC over HTTP and they basi‐
cally have the same functionality. aria2 also provides JSON-RPC over
WebSocket. JSON-RPC over WebSocket uses same method signatures and
response format with JSON-RPC over HTTP, but it additionally has
server-initiated notifications. See JSON-RPC over WebSocket section for
details.
The request path of JSON-RPC interface (for both over HTTP and over
WebSocket) is /jsonrpc. The request path of XML-RPC interface is /rpc.
The WebSocket URI for JSON-RPC over WebSocket is ws://HOST:PORT/json‐
rpc. If you enabled SSL/TLS encryption, use wss://HOST:PORT/jsonrpc
instead.
The implemented JSON-RPC is based on JSON-RPC 2.0 <‐
http://jsonrpc.org/specification>, and supports HTTP POST and GET
(JSONP). Using WebSocket as a transport is the original extension of
aria2.
The JSON-RPC interface does not support notification in HTTP, but the
RPC server will send the notification in WebSocket. It also does not
support floating point number. The character encoding must be UTF-8.
When reading following document for JSON-RPC, interpret struct as JSON
object.
Terminology
GID
GID(or gid) is the key to manage each download. Each download has an
unique GID. GID is stored in 64 bits binary data in aria2. For RPC
access, it is represented in hex string of 16 characters (e.g.,
2089b05ecca3d829). Normally, aria2 generates this GID for each down‐
load, but the user can specify GID manually using --gid option. When
querying download by GID, you can specify the prefix of GID as long
as it is a unique prefix among others.
Methods
All code examples come from Python2.7 interpreter.
aria2.addUri(uris[, options[, position]])
This method adds new HTTP(S)/FTP/BitTorrent Magnet URI. uris is
of type array and its element is URI which is of type string.
For BitTorrent Magnet URI, uris must have only one element and
it should be BitTorrent Magnet URI. URIs in uris must point to
the same file. If you mix other URIs which point to another
file, aria2 does not complain but download may fail. options is
of type struct and its members are a pair of option name and
value. See Options below for more details. If position is given
as an integer starting from 0, the new download is inserted at
position in the waiting queue. If position is not given or posi‐
tion is larger than the size of the queue, it is appended at the
end of the queue. This method returns GID of registered down‐
load.
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 2 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 insert it to the front
of waiting downloads:
>>> s.aria2.addUri(['http://example.org/file'], {}, 0)
'ca3d829cee549a4d'
aria2.addTorrent(torrent[, uris[, options[, position]]])
This method adds BitTorrent download by uploading ".torrent"
file. If you want to add BitTorrent Magnet URI, use
aria2.addUri() method instead. torrent is of type base64 which
contains Base64-encoded ".torrent" file. uris is of type array
and its element is URI which is of type string. uris is used for
Web-seeding. For single file torrents, URI can be a complete
URI pointing to the resource or if URI ends with /, name in tor‐
rent file is added. For multi-file torrents, name and path in
torrent are added to form a URI for each file. options is of
type struct and its members are a pair of option name and value.
See Options below for more details. If position is given as an
integer starting from 0, the new download is inserted at posi‐
tion in the waiting queue. If position is not given or position
is larger than the size of the queue, it is appended at the end
of the queue. This method returns GID of registered download.
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
".torrent" in the directory specified by --dir option. The
example of filename is
0a3893293e27ac0490424c06de4d09242215f0a6.torrent. If same file
already exists, it is overwritten. If the file cannot be saved
successfully or --rpc-save-upload-metadata is false, the down‐
loads 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').read()))
'2089b05ecca3d829'
aria2.addMetalink(metalink[, options[, position]])
This method adds Metalink download by uploading ".metalink"
file. metalink is of type base64 which contains Base64-encoded
".metalink" file. options is of type struct and its members are
a pair of option name and value. See Options below for more
details. If position is given as an integer starting from 0,
the new download is inserted at position in the waiting queue.
If position is not given or position is larger than the size of
the queue, it is appended at the end of the queue. This method
returns array of GID of registered download. 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 ".met‐
alink" in the directory specified by --dir option. The example
of filename is 0a3893293e27ac0490424c06de4d09242215f0a6.met‐
alink. If same file 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').read()))
['2089b05ecca3d829']
aria2.remove(gid)
This method removes the download denoted by gid. gid is of type
string. If specified download is in progress, it is stopped at
first. The status of removed download becomes removed. This
method returns GID of removed download.
The following examples remove download 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(gid)
This method removes the download denoted by gid. This method
behaves just like aria2.remove() except that this method removes
download without any action which takes time such as contacting
BitTorrent tracker.
aria2.pause(gid)
This method pauses the download denoted by gid. gid is of type
string. The status of paused download becomes paused. If the
download is active, the download is placed on the first position
of waiting queue. As long as the status is paused, the download
is not started. To change status to waiting, use
aria2.unpause() method. This method returns GID of paused down‐
load.
aria2.pauseAll()
This method is equal to calling aria2.pause() for every
active/waiting download. This methods returns OK for success.
aria2.forcePause(pid)
This method pauses the download denoted by gid. This method
behaves just like aria2.pause() except that this method pauses
download without any action which takes time such as contacting
BitTorrent tracker.
aria2.forcePauseAll()
This method is equal to calling aria2.forcePause() for every
active/waiting download. This methods returns OK for success.
aria2.unpause(gid)
This method changes the status of the download denoted by gid
from paused to waiting. This makes the download eligible to
restart. gid is of type string. This method returns GID of
unpaused download.
aria2.unpauseAll()
This method is equal to calling aria2.unpause() for every
active/waiting download. This methods returns OK for success.
aria2.tellStatus(gid[, keys])
This method returns download progress of the download denoted by
gid. gid is of type string. keys is array of string. If it is
specified, the response contains only keys in keys array. If
keys is empty or not specified, the response contains all keys.
This is useful when you just want specific keys and avoid unnec‐
essary transfers. For example, aria2.tellSta‐
tus("2089b05ecca3d829", ["gid", "status"]) returns gid and 'sta‐
tus' key. The response is of type struct and it contains fol‐
lowing keys. The value type is string.
gid GID of this download.
status active for currently downloading/seeding entry. waiting
for the entry in the queue; download is not started.
paused for the paused entry. error for the stopped down‐
load because of error. complete for the stopped and com‐
pleted download. removed for the download removed by
user.
totalLength
Total length of this download in bytes.
completedLength
Completed length of this download in bytes.
uploadLength
Uploaded length of this download in bytes.
bitfield
Hexadecimal representation of the download progress. The
highest bit corresponds to piece index 0. The set bits
indicate the piece is available and unset bits indicate
the piece is missing. The spare bits at the end are set
to zero. When download has 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 the client has connected to. Bit‐
Torrent only.
pieceLength
Piece length in bytes.
numPieces
The number of pieces.
connections
The number of peers/servers the client has connected to.
errorCode
The last error code occurred in this download. The value
is of type string. The error codes are defined in EXIT
STATUS section. This value is only available for
stopped/completed downloads.
followedBy
List of GIDs which are generated by the consequence of
this download. For example, when aria2 downloaded Met‐
alink file, it generates downloads described in it(see
--follow-metalink option). This value is useful to track
these auto generated downloads. If there is no such down‐
loads, this key will not be included in the response.
belongsTo
GID of a parent download. Some downloads are a part of
another download. For example, if a file in Metalink has
BitTorrent resource, the download of ".torrent" is a part
of that file. 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 element of list is the
same struct used in aria2.getFiles() method.
bittorrent
Struct which contains information retrieved from .torrent
file. BitTorrent only. It contains following keys.
announceList
List of lists of announce URI. If ".torrent" file
contains announce and no announce-list, announce
is converted to announce-list format.
comment
The comment for 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 sin‐
gle 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.
JSON-RPC Example
The following example gets information about download
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 information specifying keys you are
interested in:
>>> 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 download
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 information specifying keys you are
interested in:
>>> r = s.aria2.tellStatus('2089b05ecca3d829', ['gid', 'totalLength', 'completedLength'])
>>> pprint(r)
{'completedLength': '34896138', 'gid': '2089b05ecca3d829', 'totalLength': '34896138'}
aria2.getUris(gid)
This method returns URIs used in the download denoted by gid.
gid is of type string. The response is of type array and its
element is of type struct and it contains following keys. The
value type is string.
uri URI
status 'used' if the URI is already used. 'waiting' if the URI
is 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(gid)
This method returns file list of the download denoted by gid.
gid is of type string. The response is of type array and its
element is of type struct and it contains following keys. The
value type is string.
index Index of file. Starting with 1. This is the same order
with the files in 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
completedLength in aria2.tellStatus() method. This is
because completedLength in aria2.getFiles() only calcu‐
lates completed pieces. On the other hand, complet‐
edLength in aria2.tellStatus() takes into account of par‐
tially completed piece.
selected
true if this file is selected by --select-file option. If
--select-file is not specified or this is single torrent
or no torrent download, this value is always true. Other‐
wise false.
uris Returns the list of URI for this file. The element of
list is the same struct used in 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(gid)
This method returns peer list of the download denoted by gid.
gid is of type string. This method is for BitTorrent only. The
response is of type array and its element is of type struct and
it contains following keys. The value type is string.
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 piece index 0.
The set bits indicate the piece is available and unset
bits indicate the piece is missing. The spare bits at the
end are set to zero.
amChoking
true if this client is choking the peer. Otherwise false.
peerChoking
true if the peer is choking this client. 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 is this client 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(gid)
This method returns currently connected HTTP(S)/FTP servers of
the download denoted by gid. gid is of type string. The response
is of type array and its element is of type struct and it con‐
tains following keys. The value type is string.
index Index of file. Starting with 1. This is the same order
with the files in multi-file torrent.
servers
The list of struct which contains following keys.
uri URI originally added.
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([keys])
This method returns the list of active downloads. The response
is of type array and its element is the same struct returned by
aria2.tellStatus() method. For keys parameter, please refer to
aria2.tellStatus() method.
aria2.tellWaiting(offset, num[, keys])
This method returns the list of waiting download, including
paused downloads. offset is of type integer and specifies the
offset from the download waiting at the front. num is of type
integer and specifies the number of downloads to be returned.
For keys parameter, please refer to 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 down‐
load in the waiting queue and offset == -2 points the download
before the last download, and so on. The downloads in the
response are in reversed order.
For example, imagine that 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.tellWait‐
ing(-1, 2) returns ["C", "B"].
The response is of type array and its element is the same struct
returned by aria2.tellStatus() method.
aria2.tellStopped(offset, num[, keys])
This method returns the list of stopped download. offset is of
type integer and specifies the offset from the oldest download.
num is of type integer and specifies the number of downloads to
be returned. For keys parameter, please refer to
aria2.tellStatus() method.
offset and num have the same semantics as aria2.tellWaiting()
method.
The response is of type array and its element is the same struct
returned by aria2.tellStatus() method.
aria2.changePosition(gid, pos, how)
This method changes the position of the download denoted by gid.
pos is of type integer. how is of type 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 down‐
load 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 begin‐
ning or the end of the queue respectively. The response is of
type integer and it is the destination position.
For example, if GID#2089b05ecca3d829 is placed in position 3,
aria2.changePosition('2089b05ecca3d829', -1, 'POS_CUR') will
change its position to 2. Additional aria2.changePosi‐
tion('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 waiting 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(gid, fileIndex, delUris, addUris[, position])
This method removes URIs in delUris from and appends URIs in
addUris to download denoted by gid. delUris and addUris are list
of string. 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 execute
removal and then addition. position is the position after URIs
are removed, not the position when this method is called. When
removing URI, if same URIs exist in download, only one of them
is removed for each URI in delUris. In other words, 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 2 inte‐
gers. The first integer is the number of URIs deleted. The sec‐
ond integer is the number of URIs added.
The following examples add 1 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(gid)
This method returns options of the download denoted by gid. The
response is of type struct. Its key is the name of option. The
value type is string. Note that this method does not return
options which have no default value and have not been set by the
command-line options, 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(gid, options)
This method changes options of the download denoted by gid
dynamically. gid is of type string. options is of type 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 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()
This method returns global options. The response is of type
struct. Its key is the name of option. The value type is
string. Note that this method does not return options which
have no default value and have not been set by the command-line
options, configuration files or RPC methods. Because global
options are used as a template for the options of newly added
download, the response contains keys returned by
aria2.getOption() method.
aria2.changeGlobalOption(options)
This method changes global options dynamically. options is of
type struct. The following options are available:
· download-result
· log
· log-level
· max-concurrent-downloads
· max-download-result
· max-overall-download-limit
· max-overall-upload-limit
· save-cookies
· save-session
· server-stat-of
In addition to them, options listed in Input File subsection are
available, except for following options: checksum, index-out,
out, pause and select-file.
Using log option, you can dynamically start logging or change
log file. To stop logging, give empty string("") as a parameter
value. Note that log file is always opened in append mode. This
method returns OK for success.
aria2.getGlobalStat()
This method returns global statistics such as overall download
and upload speed. The response is of type struct and contains
following keys. The value type is string.
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.
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()
This method purges completed/error/removed downloads to free
memory. This method returns OK.
aria2.removeDownloadResult(gid)
This method removes completed/error/removed download denoted by
gid from memory. This method returns OK for success.
The following examples remove the download result of the down‐
load 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'
aria2.getVersion()
This method returns version of the program and the list of
enabled features. The response is of type struct and contains
following keys.
version
Version number of the program in string.
enabledFeatures
List of enabled features. Each feature name is of type
string.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getVersion'})
>>> 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'enabledFeatures': [u'Async DNS',
u'BitTorrent',
u'Firefox3 Cookie',
u'GZip',
u'HTTPS',
u'Message Digest',
u'Metalink',
u'XML-RPC'],
u'version': u'1.11.0'}}
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getVersion()
>>> pprint(r)
{'enabledFeatures': ['Async DNS',
'BitTorrent',
'Firefox3 Cookie',
'GZip',
'HTTPS',
'Message Digest',
'Metalink',
'XML-RPC'],
'version': '1.11.0'}
aria2.getSessionInfo()
This method returns session information. The response is of
type struct and contains following key.
sessionId
Session ID, which is generated each time when aria2 is
invoked.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getSessionInfo'})
>>> 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'sessionId': u'cd6a3bc6a1de28eb5bfa181e5f6b916d44af31a9'}}
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.getSessionInfo()
{'sessionId': 'cd6a3bc6a1de28eb5bfa181e5f6b916d44af31a9'}
aria2.shutdown()
This method shutdowns aria2. This method returns OK.
aria2.forceShutdown()
This method shutdowns aria2. This method behaves like
aria2.shutdown() except that any actions which takes time such
as contacting BitTorrent tracker are skipped. This method
returns OK.
system.multicall(methods)
This methods encapsulates multiple method calls in a single
request. methods is of type array and its element is struct.
The struct contains two keys: methodName and params. methodName
is the method name to call and params is array containing param‐
eters to the method. This method returns array of responses.
The element of array will either be a one-item array containing
the return value of each method call or struct of fault element
if an encapsulated method call fails.
In the following examples, we add 2 downloads. First one is
http://example.org/file and second one is file.torrent.
JSON-RPC Example
>>> import urllib2, json, base64
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'system.multicall',
... 'params':[[{'methodName':'aria2.addUri',
... 'params':[['http://example.org']]},
... {'methodName':'aria2.addTorrent',
... 'params':[base64.b64encode(open('file.torrent').read())]}]]})
>>> 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'2089b05ecca3d829'], [u'd2703803b52216d1']]}
JSON-RPC also supports Batch request described in JSON-RPC 2.0
Specification:
>>> jsonreq = json.dumps([{'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.addUri',
... 'params':[['http://example.org']]},
... {'jsonrpc':'2.0', 'id':'asdf',
... 'method':'aria2.addTorrent',
... 'params':[base64.b64encode(open('file.torrent').read())]}])
>>> 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'2089b05ecca3d829'},
{u'id': u'asdf', u'jsonrpc': u'2.0', u'result': u'd2703803b52216d1'}]
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> mc = xmlrpclib.MultiCall(s)
>>> mc.aria2.addUri(['http://example.org/file'])
>>> mc.aria2.addTorrent(xmlrpclib.Binary(open('file.torrent').read()))
>>> r = mc()
>>> tuple(r)
('2089b05ecca3d829', 'd2703803b52216d1')
Error Handling
In JSON-RPC, aria2 returns JSON object which contains error code in
code and the error message in message.
In XML-RPC, aria2 returns faultCode=1 and the error message in fault‐
String.
Options
Same options for --input-file list are available. See Input File sub‐
section for complete list of options.
In the option struct, name element is option name(without preceding --)
and value element is argument as string.
JSON-RPC Example
{'split':'1', 'http-proxy':'http://proxy/'}
XML-RPC Example
<struct>
<member>
<name>split</name>
<value><string>1</string></value>
</member>
<member>
<name>http-proxy</name>
<value><string>http://proxy/</string></value>
</member>
</struct>
header and index-out option are allowed multiple times in command-line.
Since name should be unique in struct(many XML-RPC library implementa‐
tion uses hash or dict for struct), single string is not enough. To
overcome this situation, they can take array as value as well as
string.
JSON-RPC Example
{'header':['Accept-Language: ja', 'Accept-Charset: utf-8']}
XML-RPC Example
<struct>
<member>
<name>header</name>
<value>
<array>
<data>
<value><string>Accept-Language: ja</string></value>
<value><string>Accept-Charset: utf-8</string></value>
</data>
</array>
</value>
</member>
</struct>
Following example adds a download with 2 options: dir and header.
header option has 2 values, so it uses a list:
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> opts = dict(dir='/tmp',
... header=['Accept-Language: ja',
... 'Accept-Charset: utf-8'])
>>> s.aria2.addUri(['http://example.org/file'], opts)
'1'
JSON-RPC using HTTP GET
The JSON-RPC interface also supports request via HTTP GET. The encod‐
ing scheme in GET parameters is based on JSON-RPC over HTTP Specifica‐
tion [2008-1-15(RC1)]. The encoding of GET parameters are follows:
/jsonrpc?method=METHOD_NAME&id=ID¶ms=BASE64_ENCODED_PARAMS
The method and id are always treated as JSON string and their encoding
must be UTF-8.
For example, The encoded string of aria2.tellStatus('2089b05ecca3d829')
with id='foo' looks like this:
/jsonrpc?method=aria2.tellStatus&id=foo¶ms=WyIyMDg5YjA1ZWNjYTNkODI5Il0%3D
The params parameter is Base64-encoded JSON array which usually appears
in params attribute in JSON-RPC request object. In the above example,
the params is ["2089b05ecca3d829"], therefore:
["2089b05ecca3d829"] --(Base64)--> WyIyMDg5YjA1ZWNjYTNkODI5Il0=
--(Percent Encode)--> WyIyMDg5YjA1ZWNjYTNkODI5Il0%3D
The JSON-RPC interface supports JSONP. You can specify the callback
function in jsoncallback parameter:
/jsonrpc?method=aria2.tellStatus&id=foo¶ms=WyIyMDg5YjA1ZWNjYTNkODI5Il0%3D&jsoncallback=cb
For Batch request, method and id parameter must not be specified.
Whole request must be specified in params parameter. For example, Batch
request:
[{'jsonrpc':'2.0', 'id':'qwer', 'method':'aria2.getVersion'},
{'jsonrpc':'2.0', 'id':'asdf', 'method':'aria2.tellActive'}]
will be encoded like this:
/jsonrpc?params=W3sianNvbnJwYyI6ICIyLjAiLCAiaWQiOiAicXdlciIsICJtZXRob2QiOiAiYXJpYTIuZ2V0VmVyc2lvbiJ9LCB7Impzb25ycGMiOiAiMi4wIiwgImlkIjogImFzZGYiLCAibWV0aG9kIjogImFyaWEyLnRlbGxBY3RpdmUifV0%3D
JSON-RPC over WebSocket
JSON-RPC over WebSocket uses same method signatures and response format
with JSON-RPC over HTTP. The supported WebSocket version is 13 which is
detailed in RFC 6455.
To send a RPC request to the RPC server, send serialized JSON string in
Text frame. The response from the RPC server is delivered also in Text
frame.
The RPC server will send the notification to the client. The notifica‐
tion is unidirectional, therefore the client which received the notifi‐
cation must not respond to it. The method signature of notification is
much like a normal method request but lacks id key. The value associ‐
ated by the params key is the data which this notification carries. The
format of this value varies depending on the notification method. Fol‐
lowing notification methods are defined.
aria2.onDownloadStart(event)
This notification will be sent if a download is started. The
event is of type struct and it contains following keys. The
value type is string.
gid GID of the download.
aria2.onDownloadPause(event)
This notification will be sent if a download is paused. The
event is the same struct of the event argument of
aria2.onDownloadStart() method.
aria2.onDownloadStop(event)
This notification will be sent if a download is stopped by the
user. The event is the same struct of the event argument of
aria2.onDownloadStart() method.
aria2.onDownloadComplete(event)
This notification will be sent if a download is completed. In
BitTorrent downloads, this notification is sent when the down‐
load is completed and seeding is over. The event is the same
struct of the event argument of aria2.onDownloadStart() method.
aria2.onDownloadError(event)
This notification will be sent if a download is stopped due to
error. The event is the same struct of the event argument of
aria2.onDownloadStart() method.
aria2.onBtDownloadComplete(event)
This notification will be sent if a download is completed in
BitTorrent (but seeding may not be over). The event is the same
struct of the event argument of aria2.onDownloadStart() method.
Sample XML-RPC Client Code
The following Ruby script adds http://localhost/aria2.tar.bz2 to aria2c
operated on localhost with option --dir=/downloads and prints its
reponse:
#!/usr/bin/env ruby
require 'xmlrpc/client'
require 'pp'
client=XMLRPC::Client.new2("http://localhost:6800/rpc")
options={ "dir" => "/downloads" }
result=client.call("aria2.addUri", [ "http://localhost/aria2.tar.bz2" ], options)
pp result
If you are a Python lover, you can use xmlrpclib(for Python3.x, use
xmlrpc.client instead) to interact with aria2:
import xmlrpclib
from pprint import pprint
s = xmlrpclib.ServerProxy("http://localhost:6800/rpc")
r = s.aria2.addUri(["http://localhost/aria2.tar.bz2"], {"dir":"/downloads"})
pprint(r)MISC
Console Readout
While downloading files, aria2 prints the console readout to tell the
progress of the downloads. The console readout is like this:
[#2089b0 400.0KiB/33.2MiB(1%) CN:1 DL:115.7KiB ETA:4m51s]
This section describes what these numbers and strings mean.
#NNNNNN
The first 6 characters of GID in hex string. GID is an unique ID
for each download.
X/Y(Z%)
Completed length, the total file length and its ratio. If
--select-file is used, this is the sum of selected file.
SEED Share ratio. The client is now seeding. After BitTorrent down‐
load finished, size information is replaced with this.
CN The number of connections the client has established.
SD The number of seeders the client is now connecting to.
DL Download speed (bytes per second).
UL Upload speed (bytes per second) and the number of uploaded
bytes.
ETA Expected time to finish.
When more than 1 download are going on, some of the information
described above will be omitted in order to show several download
information. And the overall download and upload speed are shown at the
beginning of the line.
When aria2 is allocating file space or validating checksum, it addi‐
tionally prints the their progress:
FileAlloc
GID, allocated length and total length in bytes.
Checksum
GID, validated length and total length in bytes.
EXAMPLE
HTTP/FTP Segmented Download
Download a file
$ aria2c "http://host/file.zip"
Note To stop a download, press Ctrl-C. You can resume the transfer by
running aria2c with the same argument in the same directory. You
can change URIs as long as they are pointing to the same file.
Download a file from 2 different HTTP servers
$ aria2c "http://host/file.zip" "http://mirror/file.zip"
Download a file from 1 host using 2 connections
$ aria2c-x2 -k1M "http://host/file.zip"
Download a file from HTTP and FTP servers
$ aria2c "http://host1/file.zip" "ftp://host2/file.zip"
Download files listed in a text file concurrently
$ aria2c-ifiles.txt -j2
Note -j option specifies the number of parallel downloads.
Using proxy
For HTTP:
$ aria2c --http-proxy="http://proxy:8080" "http://host/file"
$ aria2c --http-proxy="http://proxy:8080" --no-proxy="localhost,127.0.0.1,192.168.0.0/16" "http://host/file"
For FTP:
$ aria2c --ftp-proxy="http://proxy:8080" "ftp://host/file"
Note See --http-proxy, --https-proxy, --ftp-proxy, --all-proxy and
--no-proxy for details. You can specify proxy in the environ‐
ment variables. See ENVIRONMENT section.
Proxy with authorization
$ aria2c --http-proxy="http://username:password@proxy:8080" "http://host/file"
$ aria2c --http-proxy="http://proxy:8080" --http-proxy-user="username" --http-proxy-passwd="password" "http://host/file"
Metalink Download
Download files with remote Metalink
$ aria2c --follow-metalink=mem "http://host/file.metalink"
Download using a local metalink file
$ aria2c-p --lowest-speed-limit=4000 file.metalink
Note To stop a download, press Ctrl-C. You can resume the transfer
by running aria2c with the same argument in the same directory.
Download several local metalink files
$ aria2c-j2 file1.metalink file2.metalink
Download only selected files using index
$ aria2c --select-file=1-4,8 file.metalink
Note The index is printed to the console using -S option.
Download a file using a local metalink file with user preference
$ aria2c --metalink-location=jp,us --metalink-version=1.1 --metalink-language=en-US file.metalink
BitTorrent Download
Download files from remote BitTorrent file
$ aria2c --follow-torrent=mem "http://host/file.torrent"
Download using a local torrent file
$ aria2c --max-upload-limit=40K file.torrent
Note --max-upload-limit specifies the max of upload rate.
Note To stop a download, press Ctrl-C. You can resume the transfer by
running aria2c with the same argument in the same directory.
Download using BitTorrent Magnet URI
$ aria2c "magnet:?xt=urn:btih:248D0A1CD08284299DE78D5C1ED359BB46717D8C&dn=aria2"
Note Don't forget to quote BitTorrent Magnet URI which includes &
character with single(') or double(") quotation.
Download 2 torrents
$ aria2c-j2 file1.torrent file2.torrent
Download a file using torrent and HTTP/FTP server
$ aria2c-Ttest.torrent "http://host1/file" "ftp://host2/file"
Note Downloading multi file torrent with HTTP/FTP is not supported.
Download only selected files using index(usually called selectable download
)
$ aria2c --select-file=1-4,8 file.torrent
Note The index is printed to the console using -S option.
Specify output filename
To specify output filename for BitTorrent downloads, you need to know
the index of file in torrent file using --show-files option. For exam‐
ple, the output looks like this:
idx|path/length
===+======================
1|dist/base-2.6.18.iso
|99.9MiB
---+----------------------
2|dist/driver-2.6.18.iso
|169.0MiB
---+----------------------
To save 'dist/base-2.6.18.iso' in '/tmp/mydir/base.iso' and
'dist/driver-2.6.18.iso' in '/tmp/dir/driver.iso', use the following
command:
$ aria2c --dir=/tmp --index-out=1=mydir/base.iso --index-out=2=dir/driver.iso file.torrent
Change the listening port for incoming peer
$ aria2c --listen-port=7000-7001,8000 file.torrent
Note Since aria2 doesn't configure firewall or router for port for‐
warding, it's up to you to do it manually.
Specify the condition to stop program after torrent download finished
$ aria2c --seed-time=120 --seed-ratio=1.0 file.torrent
Note In the above example, the program exits when the 120 minutes has
elapsed since download completed or seed ratio reaches 1.0.
Throttle upload speed
$ aria2c --max-upload-limit=100K file.torrent
Enable IPv4 DHT
$ aria2c--enable-dht --dht-listen-port=6881 file.torrent
Note DHT uses udp port. Since aria2 doesn't configure firewall or
router for port forwarding, it's up to you to do it manually.
Enable IPv6 DHT
$ aria2c--enable-dht6 --dht-listen-port=6881 --dht-listen-addr6=YOUR_GLOBAL_UNICAST_IPV6_ADDR
Note aria2 shares same port between IPv4 and IPv6 DHT.
Add and remove tracker URI
Removes all tracker announce URIs described in file.torrent and use
http://tracker1/announce and http://tracker2/announce instead:
$ aria2c --bt-exclude-tracker="*" --bt-tracker="http://tracker1/announce,http://tracker2/announce" file.torrent
More advanced HTTP features
Load cookies
$ aria2c --load-cookies=cookies.txt "http://host/file.zip"
Note You can use Firefox/Mozilla/Chromium's cookie file without modi‐
fication.
Resume download started by web browsers or another programs
$ aria2c-c -s2 "http://host/partiallydownloadedfile.zip"
Client certificate authorization for SSL/TLS
$ aria2c --certificate=/path/to/mycert.pem --private-key=/path/to/mykey.pem https://host/file
Note The file specified in --private-key must be decrypted. The
behavior when encrypted one is given is undefined.
Verify peer in SSL/TLS using given CA certificates
$ aria2c --ca-certificate=/path/to/ca-certificates.crt --check-certificate https://host/file
RPC
Encrypt RPC transport by SSL/TLS
Specify server certificate file and private key file as follows:
$ aria2c--enable-rpc --rpc-certificate=/path/to/server.crt --rpc-private-key=/path/to/server.key --rpc-secure
And more advanced features
Throttle download speed
$ aria2c --max-download-limit=100K file.metalink
Repair a damaged download
$ aria2c-V file.metalink
Note Repairing damaged downloads can be done efficiently when used
with BitTorrent or Metalink with chunk checksums.
Drop connection if download speed is lower than specified value
$ aria2c --lowest-speed-limit=10K file.metalink
Parameterized URI support
You can specify set of parts:
$ aria2c-P "http://{host1,host2,host3}/file.iso"
You can specify numeric sequence:
$ aria2c-Z -P "http://host/image[000-100].png"
Note -Z option is required if the all URIs don't point to the same
file, such as the above example.
You can specify step counter:
$ aria2c-Z -P "http://host/image[A-Z:2].png"
Verify checksum
$ aria2c --checksum=sha-1=0192ba11326fe2298c8cb4de616f4d4140213837 http://example.org/file
Parallel downloads of arbitrary number of URI,metalink,torrent
$ aria2c-j3 -Z "http://host/file1" file2.torrent file3.metalink
BitTorrent Encryption
Encrypt whole payload using ARC4:
$ aria2c --bt-min-crypto-level=arc4 --bt-require-crypto=true file.torrent
SEE ALSO
Project Web Site: http://aria2.sourceforge.net/
aria2 Wiki: http://sourceforge.net/apps/trac/aria2/wiki
Metalink Homepage: http://www.metalinker.org/
The Metalink Download Description Format: RFC 5854
COPYRIGHT
Copyright (C) 2006, 2013 Tatsuhiro Tsujikawa
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MER‐
CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give permis‐
sion to link the code of portions of this program with the OpenSSL
library under certain conditions as described in each individual source
file, and distribute linked combinations including the two. You must
obey the GNU General Public License in all respects for all of the code
used other than OpenSSL. If you modify file(s) with this exception,
you may extend this exception to your version of the file(s), but you
are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version. If you delete this exception
statement from all source files in the program, then also delete it
here.
1.17.1 May 26, 2013 ARIA2C(1)
