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, SFTP, BitTorrent, and Metalink. aria2 can download a file
from multiple sources/protocols and tries to utilize your maximum down‐
load bandwidth. It supports downloading a file from HTTP(S)/FTP /SFTP
and BitTorrent at the same time, while the data downloaded from
HTTP(S)/FTP/SFTP is uploaded to the BitTorrent swarm. Using Metalink
chunk checksums, aria2 automatically validates chunks of data while
downloading a file.
OPTIONS
NOTE:
Most FTP related options are applicable to SFTP as well. Some
options are not effective against SFTP (e.g., --ftp-pasv)
Basic Options
-d, --dir=<DIR>
The directory to store the downloaded file.
-i, --input-file=<FILE>
Downloads the URIs listed in FILE. You can specify multiple
sources for a single entity by putting multiple URIs on a single
line separated by the TAB character. Additionally, options can
be specified after each URI line. Option lines must start with
one or more white space characters (SPACE or TAB) and must only
contain one option per line. Input files can use gzip compres‐
sion. When FILE is specified as -, aria2 will read the input
from stdin. See the Input File subsection for details. See
also the --deferred-input option. See also the --save-ses‐
sion-file option.
-l, --log=<LOG>
The file name of the log file. If - is specified, log is written
to stdout. If empty string("") is specified, or this option is
omitted, no log is written to disk at all.
-j, --max-concurrent-downloads=<N>
Set the maximum number of parallel downloads for every queue
item. See also the --split option. Default: 5
-V, --check-integrity[=true|false]
Check file integrity by validating piece hashes or a hash of
entire file. This option has effect only in BitTorrent, 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/SFTP Options
--all-proxy=<PROXY>
Use a proxy server for all protocols. To override a previously
defined proxy, use "". You also can override this setting and
specify a proxy server for a particular protocol using
--http-proxy, --https-proxy and --ftp-proxy options. This
affects all downloads. The format of PROXY is
[http://][USER:PASSWORD@]HOST[:PORT]. See also ENVIRONMENT sec‐
tion.
NOTE:
If user and password are embedded in proxy URI and they are
also specified by --{http,https,ftp,all}-proxy-{user,passwd}
options, those specified later override prior options. For
example, if you specified http-proxy-user=myname,
http-proxy-passwd=mypass in aria2.conf and you specified
--http-proxy="http://proxy" on the command-line, then you'd
get HTTP proxy http://proxy with user myname and password
mypass.
Another example: if you specified on the command-line
--http-proxy="http://user:pass@proxy"
--http-proxy-user="myname" --http-proxy-passwd="mypass", then
you'd get HTTP proxy http://proxy with user myname and pass‐
word mypass.
One more example: if you specified in command-line
--http-proxy-user="myname" --http-proxy-passwd="mypass"
--http-proxy="http://user:pass@proxy", then you'd get HTTP
proxy http://proxy with user user and password pass.
--all-proxy-passwd=<PASSWD>
Set password for --all-proxy option.
--all-proxy-user=<USER>
Set user for --all-proxy option.
--checksum=<TYPE>=<DIGEST>
Set checksum. TYPE is hash type. The supported hash type is
listed in Hash Algorithms in aria2c-v. DIGEST is hex digest.
For example, setting sha-1 digest looks like this:
sha-1=0192ba11326fe2298c8cb4de616f4d4140213838 This option
applies only to HTTP(S)/FTP downloads.
--connect-timeout=<SEC>
Set the connect timeout in seconds to establish connection to
HTTP/FTP/proxy server. After the connection is established, this
option makes no effect and --timeout option is used instead.
Default: 60
--dry-run[=true|false]
If true is given, aria2 just checks whether the remote file is
available and doesn't download data. This option has effect on
HTTP/FTP download. BitTorrent downloads are canceled if true is
specified. Default: false
--lowest-speed-limit=<SPEED>
Close connection if download speed is lower than or equal to
this value(bytes per sec). 0 means aria2 does not have a lowest
speed limit. You can append K or M (1K = 1024, 1M = 1024K).
This option does not affect BitTorrent downloads. Default: 0
-x, --max-connection-per-server=<NUM>
The maximum number of connections to one server for each 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
--netrc-path=<FILE>
Specify the path to the netrc file. Default: $(HOME)/.netrc
NOTE:
Permission of the .netrc file must be 600. Otherwise, the
file will be ignored.
-n, --no-netrc[=true|false]
Disables netrc support. netrc support is enabled by default.
NOTE:
netrc file is only read at the startup if --no-netrc is
false. So if --no-netrc is true at the startup, no netrc is
available throughout the session. You cannot get netrc
enabled even if you send --no-netrc=false using
aria2.changeGlobalOption().
--no-proxy=<DOMAINS>
Specify a comma separated list of host names, domains and net‐
work addresses with or without a subnet mask where no proxy
should be used.
NOTE:
For network addresses with a subnet mask, both IPv4 and IPv6
addresses work. The current implementation does not resolve
the host name in an URI to compare network addresses speci‐
fied in --no-proxy. So it is only effective if URI has
numeric IP addresses.
-o, --out=<FILE>
The file name of the downloaded file. When the
--force-sequential option is used, this option is ignored.
NOTE:
You cannot specify a file name for Metalink or BitTorrent
downloads. The file name specified here is only used when
the URIs fed to aria2 are given on the command line directly,
but not when using --input-file, --force-sequential option.
Example:
$ aria2c-o myfile.zip "http://mirror1/file.zip" "http://mirror2/file.zip"
--proxy-method=<METHOD>
Set the method to use in proxy request. METHOD is either get or
tunnel. HTTPS downloads always use tunnel regardless of this
option. Default: get
-R, --remote-time[=true|false]
Retrieve timestamp of the remote file from the remote HTTP/FTP
server and if it is available, apply it to the local file.
Default: false
--reuse-uri[=true|false]
Reuse already used URIs if no unused URIs are left. Default:
true
--retry-wait=<SEC>
Set the seconds to wait between retries. When SEC > 0, aria2
will retry downloads when the HTTP server returns a 503
response. Default: 0
--server-stat-of=<FILE>
Specify the file name to which performance profile of the
servers is saved. You can load saved data using --server-stat-if
option. See Server Performance Profile subsection below for file
format.
--server-stat-if=<FILE>
Specify the file name to load performance profile of the
servers. The loaded data will be used in some URI selector such
as feedback. See also --uri-selector option. See Server Perfor‐
mance Profile subsection below for file format.
--server-stat-timeout=<SEC>
Specifies timeout in seconds to invalidate performance profile
of the servers since the last contact to them. Default: 86400
(24hours)
-s, --split=<N>
Download a file using N connections. If more than N URIs are
given, first N URIs are used and remaining URIs are used for
backup. If less than N URIs are given, those URIs are used more
than once so that N connections total are made simultaneously.
The number of connections to the same host is restricted by the
--max-connection-per-server option. See also the
--min-split-size option. Default: 5
NOTE:
Some Metalinks regulate the number of servers to connect.
aria2 strictly respects them. This means that if Metalink
defines the maxconnections attribute lower than N, then aria2
uses the value of this lower value instead of N.
--stream-piece-selector=<SELECTOR>
Specify piece selection algorithm used in HTTP/FTP download.
Piece means fixed length segment which is downloaded in parallel
in segmented download. If default is given, aria2 selects piece
so that it reduces the number of establishing connection. This
is reasonable default behavior because establishing connection
is an expensive operation. If inorder is given, aria2 selects
piece which has minimum index. Index=0 means first of the file.
This will be useful to view movie while downloading it.
--enable-http-pipelining option may be useful to reduce re-con‐
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 sys‐
tem-wide CA certificates store, aria2 will automatically load
those certificates at the startup.
NOTE:
WinTLS and AppleTLS do not support this option. Instead you
will have to import the certificate into the OS trust store.
--certificate=<FILE>
Use the client certificate in FILE. The certificate must be
either in PKCS12 (.p12, .pfx) or in PEM format.
PKCS12 files must contain the certificate, a key and optionally
a chain of additional certificates. Only PKCS12 files with a
blank import password can be opened!
When using PEM, you have to specify the private key via
--private-key as well.
NOTE:
WinTLS does not support PEM files at the moment. Users have
to use PKCS12 files.
NOTE:
AppleTLS users should use the KeyChain Access utility to
import the client certificate and get the SHA-1 fingerprint
from the Information dialog corresponding to that certifi‐
cate. To start aria2c use --certificate=<SHA-1>. Alterna‐
tively PKCS12 files are also supported. PEM files, however,
are not supported.
--check-certificate[=true|false]
Verify the peer using certificates specified in --ca-certificate
option. Default: true
--http-accept-gzip[=true|false]
Send Accept: deflate, gzip request header and inflate response
if remote server responds with Content-Encoding: gzip or 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 user name and
password are embedded in URI, authorization header is always
sent to the server regardless of this option. Default: false
--http-no-cache[=true|false]
Send Cache-Control: no-cache and Pragma: no-cache header to
avoid cached content. If false is given, these headers are not
sent and you can add Cache-Control header with a directive you
like using --header option. Default: false
--http-user=<USER>
Set HTTP user. This affects all URIs.
--http-passwd=<PASSWD>
Set HTTP password. This affects all URIs.
--http-proxy=<PROXY>
Use a proxy server for HTTP. To override a previously defined
proxy, use "". See also the --all-proxy option. This affects
all http downloads. The format of PROXY is [http://][USER:PASS‐
WORD@]HOST[:PORT]
--http-proxy-passwd=<PASSWD>
Set password for --http-proxy.
--http-proxy-user=<USER>
Set user for --http-proxy.
--https-proxy=<PROXY>
Use a proxy server for HTTPS. To override a previously defined
proxy, use "". See also the --all-proxy option. This affects
all https download. The format of PROXY is [http://][USER:PASS‐
WORD@]HOST[:PORT]
--https-proxy-passwd=<PASSWD>
Set password for --https-proxy.
--https-proxy-user=<USER>
Set user for --https-proxy.
--private-key=<FILE>
Use the private key in FILE. The private key must be decrypted
and in PEM format. The behavior when encrypted one is given is
undefined. See also --certificate option.
--referer=<REFERER>
Set an http referrer (Referer). This affects all http/https
downloads. If * is given, the download URI is also used as the
referrer. This may be useful when used together with the
--parameterized-uri option.
--enable-http-keep-alive[=true|false]
Enable HTTP/1.1 persistent connection. Default: true
--enable-http-pipelining[=true|false]
Enable HTTP/1.1 pipelining. Default: false
NOTE:
In performance perspective, there is usually no advantage to
enable this option.
--header=<HEADER>
Append HEADER to HTTP request header. You can use this option
repeatedly to specify more than one header:
$ aria2c --header="X-A: b78" --header="X-B: 9J1" "http://host/file"
--load-cookies=<FILE>
Load Cookies from FILE using the Firefox3 format (SQLite3),
Chromium/Google Chrome (SQLite3) and the Mozilla/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/SFTP Specific Options
--ftp-user=<USER>
Set FTP user. This affects all URIs. Default: anonymous
--ftp-passwd=<PASSWD>
Set FTP password. This affects all URIs. If user name is 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
NOTE:
This option is ignored for SFTP transfer.
--ftp-proxy=<PROXY>
Use a proxy server for FTP. To override a previously defined
proxy, use "". See also the --all-proxy option. This affects
all ftp downloads. The format of PROXY is [http://][USER: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
NOTE:
This option is ignored for SFTP transfer.
--ftp-reuse-connection[=true|false]
Reuse connection in FTP. Default: true
--ssh-host-key-md=<TYPE>=<DIGEST>
Set checksum for SSH host public key. TYPE is hash type. The
supported hash type is sha-1 or md5. DIGEST is hex digest. For
example: sha-1=b030503d4de4539dc7885e6f0f5e256704edf4c3. This
option can be used to validate server's public key when SFTP is
used. If this option is not set, which is default, no validation
takes place.
BitTorrent/Metalink Options
--select-file=<INDEX>...
Set file to download by specifying its index. You can find the
file index using the --show-files option. Multiple indexes can
be specified by using ,, for example: 3,6. You can also use -
to specify a range: 1-5. , and - can be used together: 1-5,8,9.
When used with the -M option, index may vary depending on the
query (see --metalink-* options).
NOTE:
In multi file torrent, the adjacent files specified by this
option may also be downloaded. This is by design, not a bug.
A single piece may include several files or part of files,
and aria2 writes the piece to the appropriate files.
-S, --show-files[=true|false]
Print file listing of ".torrent", ".meta4" and ".metalink" file
and exit. In case of ".torrent" file, additional information
(infohash, piece length, etc) is also printed.
BitTorrent Specific Options
--bt-detach-seed-only[=true|false]
Exclude seed only downloads when counting concurrent active
downloads (See -j option). This means that if -j3 is given and
this option is turned on and 3 downloads are active and one of
those enters seed mode, then it is excluded from active download
count (thus it becomes 2), and the next download waiting in
queue gets started. But be aware that seeding item is still rec‐
ognized as active download in RPC method. Default: false
--bt-enable-hook-after-hash-check[=true|false]
Allow hook command invocation after hash check (see -V option)
in BitTorrent download. By default, when hash check succeeds,
the command given by --on-bt-download-complete is executed. To
disable this action, give false to this option. Default: true
--bt-enable-lpd[=true|false]
Enable Local Peer Discovery. If a private flag is set in a 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-force-encryption[=true|false]
Requires BitTorrent message payload encryption with arc4. This
is a shorthand of --bt-require-crypto
--bt-min-crypto-level=arc4. This option does not change the
option value of those options. If true is given, deny legacy
BitTorrent handshake and only use Obfuscation handshake and
always encrypt message payload. Default: false
--bt-hash-check-seed[=true|false]
If true is given, after hash check using --check-integrity
option and file is complete, continue to seed file. If you want
to check file and download it only when it is damaged or 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
address
--bt-max-open-files=<NUM>
Specify maximum number of files to open in multi-file BitTor‐
rent/Metalink download globally. 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 meta data only. The file(s) described in meta data will
not be downloaded. This option has effect only when BitTorrent
Magnet URI is used. See also --bt-save-metadata option.
Default: false
--bt-min-crypto-level=plain|arc4
Set minimum level of encryption method. If several encryption
methods are provided by a peer, aria2 chooses the lowest one
which satisfies the given level. Default: plain
--bt-prioritize-piece=head[=<SIZE>],tail[=<SIZE>]
Try to download first and last pieces of each file first. This
is useful for previewing files. The argument can contain 2 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 meta data as ".torrent" file. This option has effect only
when BitTorrent Magnet URI is used. The file name is hex
encoded info hash with suffix ".torrent". The directory to be
saved is the same directory where download file is saved. If the
same file already exists, meta data is not saved. See also
--bt-metadata-only option. Default: false
--bt-seed-unverified[=true|false]
Seed previously downloaded files without verifying piece hashes.
Default: false
--bt-stop-timeout=<SEC>
Stop BitTorrent download if download speed is 0 in consecutive
SEC seconds. If 0 is given, this feature is disabled. Default:
0
--bt-tracker=<URI>[,...]
Comma separated list of additional BitTorrent tracker's announce
URI. These URIs are not affected by --bt-exclude-tracker option
because they are added after URIs in --bt-exclude-tracker option
are removed.
--bt-tracker-connect-timeout=<SEC>
Set the connect timeout in seconds to establish connection to
tracker. After the connection is established, this option makes
no effect and --bt-tracker-timeout option is used instead.
Default: 60
--bt-tracker-interval=<SEC>
Set the interval in seconds between tracker requests. This 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 if present, otherwise
$XDG_CACHE_HOME/aria2/dht.dat.
--dht-file-path6=<PATH>
Change the IPv6 DHT routing table file to PATH. Default:
$HOME/.aria2/dht6.dat if present, otherwise
$XDG_CACHE_HOME/aria2/dht6.dat.
--dht-listen-addr6=<ADDR>
Specify address to bind socket for IPv6 DHT. It should be a
global unicast IPv6 address of the host.
--dht-listen-port=<PORT>...
Set UDP listening port used by DHT(IPv4, IPv6) and UDP tracker.
Multiple ports can be specified by using ,, for example:
6881,6885. You can also use - to specify a range: 6881-6999. ,
and - can be used together. Default: 6881-6999
NOTE:
Make sure that the specified ports are open for incoming UDP
traffic.
--dht-message-timeout=<SEC>
Set timeout in seconds. Default: 10
--enable-dht[=true|false]
Enable IPv4 DHT functionality. It also enables UDP tracker 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 .torrent file is downloaded to the disk, but is not parsed
as a torrent and its contents are not downloaded. Default: true
-O, --index-out=<INDEX>=<PATH>
Set file path for file with index=INDEX. You can find the file
index using the --show-files option. PATH is a relative path to
the path specified in --dir option. You can use this option 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: A2-$MAJOR-$MINOR-$PATCH-, $MAJOR, $MINOR and $PATCH are
replaced by major, minor and patch version number respectively.
For instance, aria2 version 1.18.8 has prefix ID A2-1-18-8-.
--seed-ratio=<RATIO>
Specify share ratio. Seed completed torrents until share ratio
reaches RATIO. You are strongly encouraged to specify equals or
more than 1.0 here. Specify 0.0 if you intend to do seeding
regardless of share ratio. If --seed-time option is specified
along with this option, seeding ends when at least one of the
conditions is satisfied. Default: 1.0
--seed-time=<MINUTES>
Specify seeding time in minutes. Also see the --seed-ratio
option.
NOTE:
Specifying --seed-time=0 disables seeding after download 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 .metalink file
is downloaded to the disk, but is not parsed as a metalink file
and its contents are not downloaded. Default: true
--metalink-base-uri=<URI>
Specify base URI to resolve relative URI in metalink:url and
metalink:metaurl element in a metalink file stored in local
disk. If URI points to a directory, URI must end with /.
-M, --metalink-file=<METALINK_FILE>
The file path to ".meta4" and ".metalink" file. Reads input from
stdin when - is specified. You are not required to use this
option because you can specify ".metalink" files without
--metalink-file.
--metalink-language=<LANGUAGE>
The language of the file to download.
--metalink-location=<LOCATION>[,...]
The location of the preferred server. A comma-delimited list of
locations is acceptable, for example, jp,us.
--metalink-os=<OS>
The operating system of the file to download.
--metalink-version=<VERSION>
The version of the file to download.
--metalink-preferred-protocol=<PROTO>
Specify preferred protocol. The possible values are http,
https, ftp and none. Specify none to disable this feature.
Default: none
--metalink-enable-unique-protocol[=true|false]
If true is given and several protocols are available for a 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 secret authorization token using --rpc-secret option. See
also --rpc-listen-port option. Default: false
--pause[=true|false]
Pause download after added. This option is effective only when
--enable-rpc=true is given. Default: false
--pause-metadata[=true|false]
Pause downloads created as a result of metadata download. There
are 3 types of metadata downloads in aria2: (1) downloading
.torrent file. (2) downloading torrent metadata using magnet
link. (3) downloading metalink file. These metadata downloads
will generate downloads using their metadata. This option pauses
these subsequent downloads. This option is effective only when
--enable-rpc=true is given. Default: false
--rpc-allow-origin-all[=true|false]
Add Access-Control-Allow-Origin header field with value * to the
RPC response. Default: false
--rpc-certificate=<FILE>
Use the certificate in FILE for RPC server. The certificate must
be either in PKCS12 (.p12, .pfx) or in PEM format.
PKCS12 files must contain the certificate, a key and optionally
a chain of additional certificates. Only PKCS12 files with a
blank import password can be opened!
When using PEM, you have to specify the private key via
--rpc-private-key as well. Use --rpc-secure option to enable
encryption.
NOTE:
WinTLS does not support PEM files at the moment. Users have
to use PKCS12 files.
NOTE:
AppleTLS users should use the KeyChain Access utility to
first generate a self-signed SSL-Server certificate, e.g.
using the wizard, and get the SHA-1 fingerprint from the
Information dialog corresponding to that new certificate. To
start aria2c with --rpc-secure use --rpc-certificate=<SHA-1>.
Alternatively PKCS12 files are also supported. PEM files,
however, are not supported.
--rpc-listen-all[=true|false]
Listen incoming JSON-RPC/XML-RPC requests on all network 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.
WARNING:
--rpc-passwd option will be deprecated in the future release.
Migrate to --rpc-secret option as soon as possible.
--rpc-private-key=<FILE>
Use the private key in FILE for RPC server. The private key
must be decrypted and in PEM format. Use --rpc-secure option to
enable encryption. See also --rpc-certificate option.
--rpc-save-upload-metadata[=true|false]
Save the uploaded torrent or metalink meta data in the directory
specified by --dir option. The file name consists of SHA-1 hash
hex string of meta data plus extension. For torrent, the 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-secret=<TOKEN>
Set RPC secret authorization token. Read RPC authorization
secret token to know how this option value is used.
--rpc-secure[=true|false]
RPC transport will be encrypted by SSL/TLS. The RPC clients
must use https scheme to access the server. For WebSocket
client, use wss scheme. Use --rpc-certificate and
--rpc-private-key options to specify the server certificate and
private key.
--rpc-user=<USER>
Set JSON-RPC/XML-RPC user.
WARNING:
--rpc-user option will be deprecated in the future release.
Migrate to --rpc-secret option as soon as possible.
Advanced Options
--allow-overwrite[=true|false]
Restart download from scratch if the corresponding control file
doesn't exist. See also --auto-file-renaming option. Default:
false
--allow-piece-length-change[=true|false]
If false is given, aria2 aborts download when a piece length is
different from one in a control file. If true is given, you can
proceed but some download progress will be lost. Default: false
--always-resume[=true|false]
Always resume download. If true is given, aria2 always tries to
resume download and if resume is not possible, aborts download.
If false is given, when all given URIs do not support resume or
aria2 encounters N URIs which does not support resume (N is the
value specified using --max-resume-failure-tries option), aria2
downloads file from scratch. See --max-resume-failure-tries
option. Default: true
--async-dns[=true|false]
Enable asynchronous DNS. Default: true
--async-dns-server=<IPADDRESS>[,...]
Comma separated list of DNS server address used in asynchronous
DNS resolver. Usually asynchronous DNS resolver reads DNS server
addresses from /etc/resolv.conf. When this option is used, it
uses DNS servers specified in this option instead of ones in
/etc/resolv.conf. You can specify both IPv4 and IPv6 address.
This option is useful when the system does not have
/etc/resolv.conf and user does not have the permission to create
it.
--auto-file-renaming[=true|false]
Rename file name if the same file already exists. This option
works only in HTTP(S)/FTP download. The new file name has a dot
and a number(1..9999) appended. Default: true
--auto-save-interval=<SEC>
Save a control file(*.aria2) every SEC seconds. If 0 is given,
a control file is not saved during download. aria2 saves a 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
file name (see --out option) or file name part in URI if --out
is not specified. To overwrite existing file, --allow-overwrite
is required. Default: false
--conf-path=<PATH>
Change the configuration file path to PATH. Default:
$HOME/.aria2/aria2.conf if present, otherwise $XDG_CON‐
FIG_HOME/aria2/aria2.conf.
--console-log-level=<LEVEL>
Set log level to output to console. LEVEL is either debug,
info, notice, warn or error. Default: notice
-D, --daemon[=true|false]
Run as daemon. The current working directory will be changed to
/ and standard input, standard output and standard error will be
redirected to /dev/null. Default: false
--deferred-input[=true|false]
If true is given, aria2 does not read all URIs and options from
file specified by --input-file option at startup, but it reads
one by one when it needs later. This may reduce memory usage if
input file contains a lot of URIs to download. If false is
given, aria2 reads all URIs and options at startup. Default:
false
WARNING:
--deferred-input option will be disabled when --save-session
is used together.
--disable-ipv6[=true|false]
Disable IPv6. This is useful if you have to use broken DNS and
want to avoid terribly slow AAAA record lookup. Default: false
--disk-cache=<SIZE>
Enable disk cache. If SIZE is 0, the disk cache is disabled.
This feature caches the downloaded data in memory, which grows
to at most SIZE bytes. The cache storage is created for aria2
instance and shared by all downloads. The one advantage of the
disk cache is reduce the disk I/O because the data are written
in larger unit and it is reordered by the offset of the file.
If hash checking is involved and the data are cached in memory,
we don't need to read them from the disk. SIZE can include K or
M (1K = 1024, 1M = 1024K). Default: 16M
--download-result=<OPT>
This option changes the way Download Results is formatted. If
OPT is default, print GID, status, average download speed and
path/URI. If multiple files are involved, path/URI of first
requested file is printed and remaining ones are omitted. If
OPT is full, print GID, status, average download speed, 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
--dscp=<DSCP>
Set DSCP value in outgoing IP packets of BitTorrent traffic for
QoS. This parameter sets only DSCP bits in TOS field of IP pack‐
ets, not the whole field. If you take values from
/usr/include/netinet/ip.h divide them by 4 (otherwise values
would be incorrect, e.g. your CS1 class would turn into CS4). If
you take commonly used values from RFC, network vendors' docu‐
mentation, Wikipedia or any other source, use them as they are.
--rlimit-nofile=<NUM>
Set the soft limit of open file descriptors. This open will
only have effect when:
a. The system supports it (posix)
b. The limit does not exceed the hard limit.
c. The specified limit is larger than the current soft limit.
This is equivalent to setting nofile via ulimit, except that it
will never decrease the limit.
This option is only available on systems supporting the rlimit
API.
--enable-color[=true|false]
Enable color output for a terminal. Default: true
--enable-mmap[=true|false]
Map files into memory. This option may not work if the file
space is not pre-allocated. See --file-allocation.
Default: false
--event-poll=<POLL>
Specify the method for polling events. The possible values are
epoll, kqueue, port, poll and select. For each epoll, kqueue,
port and poll, it is available if system supports it. epoll is
available on recent Linux. kqueue is available on various *BSD
systems including Mac OS X. port is available on Open Solaris.
The default value may vary depending on the system you use.
--file-allocation=<METHOD>
Specify file allocation method. none doesn't pre-allocate file
space. prealloc pre-allocates file space before download begins.
This may take some time depending on the size of the file. If
you are using newer file systems such as ext4 (with extents 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 option also saves control file in
that situations. This may be useful to save BitTorrent seeding
which is recognized as completed state. Default: false
--gid=<GID>
Set GID manually. aria2 identifies each download by the ID
called GID. The GID must be hex string of 16 characters, thus
[0-9a-zA-Z] are allowed and leading zeros must not be stripped.
The GID all 0 is reserved and must not be used. The GID must be
unique, otherwise error is reported and the download is not
added. This option is useful when restoring the sessions saved
using --save-session option. If this option is not used, new GID
is generated by aria2.
--hash-check-only[=true|false]
If true is given, after hash check using --check-integrity
option, abort download whether or not download is complete.
Default: false
--human-readable[=true|false]
Print sizes and speed in human readable format (e.g., 1.2Ki,
3.4Mi) in the console readout. Default: true
--interface=<INTERFACE>
Bind sockets to given interface. You can specify interface name,
IP address and host name. Possible Values: interface, IP
address, host name
NOTE:
If an interface has multiple addresses, it is highly recom‐
mended 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
--min-tls-version=<VERSION>
Specify minimum SSL/TLS version to enable. Possible Values:
SSLv3, TLSv1, TLSv1.1, TLSv1.2 Default: TLSv1
--multiple-interface=<INTERFACES>
Comma separated list of interfaces to bind sockets to. Requests
will be splited among the interfaces to achieve link aggrega‐
tion. You can specify interface name, IP address and hostname.
If --interface is used, this option will be ignored. Possible
Values: interface, IP address, hostname
--log-level=<LEVEL>
Set log level to output. LEVEL is either debug, info, notice,
warn or error. Default: debug
--on-bt-download-complete=<COMMAND>
For BitTorrent, a command specified in --on-download-complete is
called after download completed and seeding is over. On the
other hand, this option set the command to be executed after
download completed but before seeding. See Event Hook for more
details about COMMAND. Possible Values: /path/to/command
--on-download-complete=<COMMAND>
Set the command to be executed after download completed. See
See Event Hook for more details about COMMAND. See also
--on-download-stop option. Possible Values: /path/to/command
--on-download-error=<COMMAND>
Set the command to be executed after download aborted due to
error. See Event Hook for more details about COMMAND. See also
--on-download-stop option. Possible Values: /path/to/command
--on-download-pause=<COMMAND>
Set the command to be executed after download was paused. See
Event Hook for more details about COMMAND. Possible Values:
/path/to/command
--on-download-start=<COMMAND>
Set the command to be executed after download got started. See
Event Hook for more details about COMMAND. Possible Values:
/path/to/command
--on-download-stop=<COMMAND>
Set the command to be executed after download stopped. You can
override the command to be executed for particular download
result using --on-download-complete and --on-download-error. If
they are specified, command specified in this option is not 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 use case of --piece-length option is change the
request range in one HTTP pipelined request. To enable HTTP
pipelining use --enable-http-pipelining.
--show-console-readout[=true|false]
Show console readout. Default: true
--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
meta data could not be saved as a file are not saved. Downloads
removed using aria2.remove() and aria2.forceRemove() will not be
saved. GID is also saved with gid, but there are some restric‐
tions, see below.
NOTE:
Normally, GID of the download itself is saved. But some down‐
loads use meta data (e.g., BitTorrent and Metalink). In this
case, there are some restrictions.
magnet URI, and followed by torrent download
GID of BitTorrent meta data download is saved.
URI to torrent file, and followed by torrent download
GID of torrent file download is saved.
URI to metalink file, and followed by file downloads
described in metalink file
GID of metalink file download is saved.
local torrent file
GID of torrent download is saved.
local metalink file
Any meaningful GID is not saved.
--save-session-interval=<SEC>
Save error/unfinished downloads to a file specified by
--save-session option every SEC seconds. If 0 is given, file
will be saved only when aria2 exits. Default: 0
--socket-recv-buffer-size=<SIZE>
Set the maximum socket receive buffer in bytes. Specifing 0
will disable this option. This value will be set to socket file
descriptor using SO_RCVBUF socket option with setsockopt() call.
Default: 0
--stop=<SEC>
Stop application after SEC seconds has passed. If 0 is given,
this feature is disabled. Default: 0
--stop-with-process=<PID>
Stop application when process PID is not running. This is 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 omitting 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/SFTP server at the same time, while the data from
HTTP(S)/FTP/SFTP are uploaded to the torrent swarm. For single file
torrents, URI can be a complete URI pointing to the resource or if URI
ends with /, name in torrent file in torrent is added. For multi-file
torrents, name and path are added to form a URI for each file.
NOTE:
Make sure that URI is quoted with single(') or double(") quotation
if it contains & or any characters that have special meaning 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, and SFTP downloads, usually the number of files is 1. BitTorrent
download can contain multiple files. If number of files is more than
one, file path is first one. In other words, this is the value of path
key of first struct whose selected key is true in the response of
aria2.getFiles() RPC method. If you want to get all file paths, 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 specified 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 redirects 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.
31 Reserved. Not used.
32 If checksum validation failed.
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 a comma-separated list of host names, domains and net‐
work addresses with or without a subnet mask where no proxy
should be used. Overrides the no-proxy value in configuration
file. The command-line option --no-proxy overrides this value.
FILES
aria2.conf
By default, aria2 checks whether the legacy path
$HOME/.aria2/aria2.conf is present, otherwise it parses $XDG_CON‐
FIG_HOME/aria2/aria2.conf as its configuration file. You can specify
the path to configuration file using --conf-path option. If you don't
want to use the configuration file, use --no-conf option.
The configuration file is a text file and has 1 option per each line.
In each line, you can specify name-value pair in the format:
NAME=VALUE, where name is the long command-line option name without --
prefix. You can use same syntax for the command-line option. The lines
beginning # are treated as comments:
# sample configuration file for aria2c
listen-port=60000
dht-listen-port=60000
seed-ratio=1.0
max-upload-limit=50K
ftp-pasv=true
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
Unless the legacy file paths $HOME/.aria2/dht.dat and
$HOME/.aria2/dht6.dat are pointing to existing files, the routing table
of IPv4 DHT is saved to the path $XDG_CACHE_HOME/aria2/dht.dat and the
routing table of IPv6 DHT is saved to the path
$XDG_CACHE_HOME/aria2/dht6.dat.
Netrc
Netrc support is enabled by default for HTTP(S)/FTP/SFTP. To disable
netrc support, specify --no-netrc option. Your .netrc file should have
correct permissions(600).
If machine name starts ., aria2 performs domain-match instead of exact
match. This is an extension of aria2. For example of domain match,
imagine the following .netrc entry:
machine .example.org login myid password mypasswd
aria2.example.org domain-matches .example.org and uses myid and
mypasswd.
Some domain-match example follow: example.net does not domain-match
.example.org. example.org does not domain-match .example.org because of
preceding .. If you want to match example.org, specify example.org.
Control File
aria2 uses a control file to track the progress of a download. A con‐
trol file is placed in the same directory as the downloading file and
its file name is the file name of downloading file with .aria2
appended. For example, if you are downloading file.zip, then the con‐
trol file should be file.zip.aria2. (There is a exception for this
naming convention. If you are downloading a multi torrent, its control
file is the "top directory" name of the torrent with .aria2 appended.
The "top directory" name is a value of "name" key in "info" directory
in a torrent file.)
Usually a control file is deleted once download completed. If aria2
decides that download cannot be resumed(for example, when downloading a
file from a HTTP server which doesn't support resume), a control file
is not created.
Normally if you lose a control file, you cannot resume download. But
if you have a torrent or metalink with chunk checksums for the file,
you can resume the download without a control file by giving -V option
to aria2c in command-line.
Input File
The input file can contain a list of URIs for aria2 to download. You
can specify multiple URIs for a single entity: separate URIs on a 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-hook-after-hash-check
· bt-enable-lpd
· bt-exclude-tracker
· bt-external-ip
· bt-force-encryption
· bt-hash-check-seed
· 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
· pause-metadata
· 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
· ssh-host-key-md
· 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 Host name of the server. Required.
protocol
Protocol for this profile, such as ftp, http. Required.
dl_speed
The average download speed observed in the previous download in
bytes per sec. Required.
sc_avg_speed
The average download speed observed in the previous download in
bytes per sec. This value is only updated if the download is
done in single connection environment and only used by 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 interfaces that
offer basically the same functionality. aria2 also provides JSON-RPC
over WebSocket. JSON-RPC over WebSocket uses the same method signatures
and response format as JSON-RPC over HTTP, but additionally provides
server-initiated notifications. See JSON-RPC over WebSocket section for
more information.
The request path of the JSON-RPC interface (for both over HTTP and over
WebSocket) is /jsonrpc. The request path of the 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). The WebSocket transport is an aria2 extension.
The JSON-RPC interface does not support notifications over HTTP, but
the RPC server will send notifications over WebSocket. It also does not
support floating point numbers. The character encoding must be UTF-8.
When reading the following documentation for JSON-RPC, interpret
structs as JSON objects.
Terminology
GID
The GID (or gid) is a key to manage each download. Each download
will be assigned a unique GID. The GID is stored as 64-bit binary
value in aria2. For RPC access, it is represented as a hex string
of 16 characters (e.g., 2089b05ecca3d829). Normally, aria2 generates
this GID for each download, but the user can specify GIDs manually
using the --gid option. When querying downloads by GID, you can
specify only the prefix of a GID as long as it is unique among oth‐
ers.
RPC authorization secret token
As of 1.18.4, in addition to HTTP basic authorization, aria2 provides
RPC method-level authorization. In a future release, HTTP basic autho‐
rization will be removed and RPC method-level authorization will become
mandatory.
To use RPC method-level authorization, the user has to specify an RPC
secret authorization token using the --rpc-secret option. For each RPC
method call, the caller has to include the token prefixed with token:.
Even when the --rpc-secret option is not used, if the first parameter
in the RPC method is a string and starts with token:, it will removed
from the parameter list before the request is being processed.
For example, if the RPC secret authorization token is $$secret$$, call‐
ing aria2.addUri RPC method would have to look like this:
aria2.addUri("token:$$secret$$", ["http://example.org/file"])
The system.multicall RPC method is treated specially. Since the XML-RPC
specification only allows a single array as a parameter for this
method, we don't specify the token in the call. Instead, each nested
method call has to provide the token as the first parameter as
described above.
NOTE:
The secret token validation in aria2 is designed to take at least a
certain amount of time to mitigate brute-force/dictionary attacks
against the RPC interface. Therefore it is recommended to prefer
Batch or system.multicall requests when appropriate.
Methods
All code examples are compatible with the Python 2.7 interpreter. For
information on the secret parameter, see RPC authorization secret
token.
aria2.addUri([secret], uris[, options[, position]])
This method adds a new download. uris is an array of
HTTP/FTP/SFTP/BitTorrent URIs (strings) pointing to the same
resource. If you mix URIs pointing to different resources, then
the download may fail or be corrupted without aria2 complaining.
When adding BitTorrent Magnet URIs, uris must have only one ele‐
ment and it should be BitTorrent Magnet URI. options is a
struct and its members are pairs of option name and value. See
Options below for more details. If position is given, it must
be an integer starting from 0. The new download will be inserted
at position in the waiting queue. If position is omitted or
position is larger than the current size of the queue, the new
download is appended to the end of the queue. This method
returns the GID of the newly registered download.
JSON-RPC Example
The following example adds http://example.org/file:
>>> import urllib2, json
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.addUri',
... 'params':[['http://example.org/file']]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"qwer","jsonrpc":"2.0","result":"2089b05ecca3d829"}'
XML-RPC Example
The following example adds http://example.org/file:
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.addUri(['http://example.org/file'])
'2089b05ecca3d829'
The following example adds a new download with two sources and
some options:
>>> s.aria2.addUri(['http://example.org/file', 'http://mirror/file'],
dict(dir="/tmp"))
'd2703803b52216d1'
The following example adds a download and inserts it to the
front of the queue:
>>> s.aria2.addUri(['http://example.org/file'], {}, 0)
'ca3d829cee549a4d'
aria2.addTorrent([secret], torrent[, uris[, options[, position]]])
This method adds a BitTorrent download by uploading a ".torrent"
file. If you want to add a BitTorrent Magnet URI, use the
aria2.addUri() method instead. torrent must be a base64-encoded
string containing the contents of the ".torrent" file. uris is
an array of URIs (string). uris is used for Web-seeding. For
single file torrents, the URI can be a complete URI pointing to
the resource; if URI ends with /, name in torrent file is added.
For multi-file torrents, name and path in torrent are added to
form a URI for each file. options is a struct and its members
are pairs of option name and value. See Options below for more
details. If position is given, it must be an integer starting
from 0. The new download will be inserted at position in the
waiting queue. If position is omitted or position is larger than
the current size of the queue, the new download is appended to
the end of the queue. This method returns the GID of the newly
registered download. If --rpc-save-upload-metadata is true, the
uploaded data is saved as a file named as the hex string of
SHA-1 hash of data plus ".torrent" in the directory specified by
--dir option. E.g. a file name might be
0a3893293e27ac0490424c06de4d09242215f0a6.torrent. If a file
with the same name already exists, it is overwritten! If the
file cannot be saved successfully or --rpc-save-upload-metadata
is false, the downloads added by this method are not saved by
--save-session.
The following examples add local file file.torrent.
JSON-RPC Example
>>> import urllib2, json, base64
>>> torrent = base64.b64encode(open('file.torrent').read())
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'asdf',
... 'method':'aria2.addTorrent', 'params':[torrent]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"asdf","jsonrpc":"2.0","result":"2089b05ecca3d829"}'
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.addTorrent(xmlrpclib.Binary(open('file.torrent', mode='rb').read()))
'2089b05ecca3d829'
aria2.addMetalink([secret], metalink[, options[, position]])
This method adds a Metalink download by uploading a ".metalink"
file. metalink is a base64-encoded string which contains the
contents of the ".metalink" file. options is a struct and its
members are pairs of option name and value. See Options below
for more details. If position is given, it must be an integer
starting from 0. The new download will be inserted at position
in the waiting queue. If position is omitted or position is
larger than the current size of the queue, the new download is
appended to the end of the queue. This method returns an array
of GIDs of newly registered downloads. If
--rpc-save-upload-metadata is true, the uploaded data is saved
as a file named hex string of SHA-1 hash of data plus ".met‐
alink" in the directory specified by --dir option. E.g. a file
name might be 0a3893293e27ac0490424c06de4d09242215f0a6.metalink.
If a file with the same name already exists, it is overwritten!
If the file cannot be saved successfully or
--rpc-save-upload-metadata is false, the downloads added by this
method are not saved by --save-session.
The following examples add local file file.meta4.
JSON-RPC Example
>>> import urllib2, json, base64
>>> metalink = base64.b64encode(open('file.meta4').read())
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.addMetalink',
... 'params':[metalink]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"qwer","jsonrpc":"2.0","result":["2089b05ecca3d829"]}'
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.addMetalink(xmlrpclib.Binary(open('file.meta4', mode='rb').read()))
['2089b05ecca3d829']
aria2.remove([secret], gid)
This method removes the download denoted by gid (string). If
the specified download is in progress, it is first stopped. The
status of the removed download becomes removed. This method
returns GID of removed download.
The following examples remove a download with
GID#2089b05ecca3d829.
JSON-RPC Example
>>> import urllib2, json
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.remove',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> c.read()
'{"id":"qwer","jsonrpc":"2.0","result":"2089b05ecca3d829"}'
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.remove('2089b05ecca3d829')
'2089b05ecca3d829'
aria2.forceRemove([secret], gid)
This method removes the download denoted by gid. This method
behaves just like aria2.remove() except that this method removes
the download without performing any actions which take time,
such as contacting BitTorrent trackers to unregister the down‐
load first.
aria2.pause([secret], gid)
This method pauses the download denoted by gid (string). The
status of paused download becomes paused. If the download was
active, the download is placed in the front of waiting queue.
While the status is paused, the download is not started. To
change status to waiting, use the aria2.unpause() method. This
method returns GID of paused download.
aria2.pauseAll([secret])
This method is equal to calling aria2.pause() for every
active/waiting download. This methods returns OK.
aria2.forcePause([secret], gid)
This method pauses the download denoted by gid. This method
behaves just like aria2.pause() except that this method pauses
downloads without performing any actions which take time, such
as contacting BitTorrent trackers to unregister the download
first.
aria2.forcePauseAll([secret])
This method is equal to calling aria2.forcePause() for every
active/waiting download. This methods returns OK.
aria2.unpause([secret], gid)
This method changes the status of the download denoted by gid
(string) from paused to waiting, making the download eligible to
be restarted. This method returns the GID of the unpaused down‐
load.
aria2.unpauseAll([secret])
This method is equal to calling aria2.unpause() for every
active/waiting download. This methods returns OK.
aria2.tellStatus([secret], gid[, keys])
This method returns the progress of the download denoted by gid
(string). keys is an array of strings. If specified, the
response contains only keys in the keys array. If keys is empty
or omitted, the response contains all keys. This is useful when
you just want specific keys and avoid unnecessary transfers.
For example, aria2.tellStatus("2089b05ecca3d829", ["gid", "sta‐
tus"]) returns the gid and status keys only. The response is a
struct and contains following keys. Values are strings.
gid GID of the download.
status active for currently downloading/seeding downloads.
waiting for downloads in the queue; download is not
started. paused for paused downloads. error for down‐
loads that were stopped because of error. complete for
stopped and completed downloads. removed for the down‐
loads removed by user.
totalLength
Total length of the download in bytes.
completedLength
Completed length of the download in bytes.
uploadLength
Uploaded length of the download in bytes.
bitfield
Hexadecimal representation of the download progress. The
highest bit corresponds to the piece at index 0. Any set
bits indicate loaded pieces, while unset bits indicate
not yet loaded and/or missing pieces. Any overflow bits
at the end are set to zero. When the download was not
started yet, this key will not be included in the
response.
downloadSpeed
Download speed of this download measured in bytes/sec.
uploadSpeed
Upload speed of this download measured in bytes/sec.
infoHash
InfoHash. BitTorrent only.
numSeeders
The number of seeders aria2 has connected to. BitTorrent
only.
pieceLength
Piece length in bytes.
numPieces
The number of pieces.
connections
The number of peers/servers aria2 has connected to.
errorCode
The code of the last error for this item, if any. The
value is a string. The error codes are defined in the
EXIT STATUS section. This value is only available for
stopped/completed downloads.
errorMessage
The (hopefully) human readable error message associated
to errorCode.
followedBy
List of GIDs which are generated as the result of this
download. For example, when aria2 downloads a Metalink
file, it generates downloads described in the Metalink
(see the --follow-metalink option). This value is useful
to track auto-generated downloads. If there are no such
downloads, this key will not be included in the response.
belongsTo
GID of a parent download. Some downloads are a part of
another download. For example, if a file in a Metalink
has BitTorrent resources, the downloads of ".torrent"
files are parts of that parent. If this download has no
parent, this key will not be included in the response.
dir Directory to save files.
files Returns the list of files. The elements of this list are
the same structs used in aria2.getFiles() method.
bittorrent
Struct which contains information retrieved from the
.torrent (file). BitTorrent only. It contains following
keys.
announceList
List of lists of announce URIs. If the torrent
contains announce and no announce-list, announce
is converted to the announce-list format.
comment
The comment of the torrent. comment.utf-8 is used
if available.
creationDate
The creation time of the torrent. The value is an
integer since the epoch, measured in seconds.
mode File mode of the torrent. The value is either 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 a download with
GID#2089b05ecca3d829:
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.tellStatus',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': {u'bitfield': u'0000000000',
u'completedLength': u'901120',
u'connections': u'1',
u'dir': u'/downloads',
u'downloadSpeed': u'15158',
u'files': [{u'index': u'1',
u'length': u'34896138',
u'completedLength': u'34896138',
u'path': u'/downloads/file',
u'selected': u'true',
u'uris': [{u'status': u'used',
u'uri': u'http://example.org/file'}]}],
u'gid': u'2089b05ecca3d829',
u'numPieces': u'34',
u'pieceLength': u'1048576',
u'status': u'active',
u'totalLength': u'34896138',
u'uploadLength': u'0',
u'uploadSpeed': u'0'}}
The following example gets only specific keys:
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.tellStatus',
... 'params':['2089b05ecca3d829',
... ['gid',
... 'totalLength',
... 'completedLength']]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': {u'completedLength': u'5701632',
u'gid': u'2089b05ecca3d829',
u'totalLength': u'34896138'}}
XML-RPC Example
The following example gets information about a download with
GID#2089b05ecca3d829:
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.tellStatus('2089b05ecca3d829')
>>> pprint(r)
{'bitfield': 'ffff80',
'completedLength': '34896138',
'connections': '0',
'dir': '/downloads',
'downloadSpeed': '0',
'errorCode': '0',
'files': [{'index': '1',
'length': '34896138',
'completedLength': '34896138',
'path': '/downloads/file',
'selected': 'true',
'uris': [{'status': 'used',
'uri': 'http://example.org/file'}]}],
'gid': '2089b05ecca3d829',
'numPieces': '17',
'pieceLength': '2097152',
'status': 'complete',
'totalLength': '34896138',
'uploadLength': '0',
'uploadSpeed': '0'}
The following example gets only specific keys:
>>> r = s.aria2.tellStatus('2089b05ecca3d829', ['gid', 'totalLength', 'completedLength'])
>>> pprint(r)
{'completedLength': '34896138', 'gid': '2089b05ecca3d829', 'totalLength': '34896138'}
aria2.getUris([secret], gid)
This method returns the URIs used in the download denoted by gid
(string). The response is an array of structs and it contains
following keys. Values are string.
uri URI
status 'used' if the URI is in use. 'waiting' if the URI is
still waiting in the queue.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getUris',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': [{u'status': u'used',
u'uri': u'http://example.org/file'}]}
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getUris('2089b05ecca3d829')
>>> pprint(r)
[{'status': 'used', 'uri': 'http://example.org/file'}]
aria2.getFiles([secret], gid)
This method returns the file list of the download denoted by gid
(string). The response is an array of structs which contain
following keys. Values are strings.
index Index of the file, starting at 1, in the same order as
files appear in the multi-file torrent.
path File path.
length File size in bytes.
completedLength
Completed length of this file in bytes. Please note that
it is possible that sum of completedLength is less than
the completedLength returned by the aria2.tellStatus()
method. This is because completedLength in
aria2.getFiles() only includes completed pieces. On the
other hand, completedLength in aria2.tellStatus() also
includes partially completed pieces.
selected
true if this file is selected by --select-file option. If
--select-file is not specified or this is single-file
torrent or not a torrent download at all, this value is
always true. Otherwise false.
uris Returns a list of URIs for this file. The element type is
the same struct used in the aria2.getUris() method.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getFiles',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': [{u'index': u'1',
u'length': u'34896138',
u'completedLength': u'34896138',
u'path': u'/downloads/file',
u'selected': u'true',
u'uris': [{u'status': u'used',
u'uri': u'http://example.org/file'}]}]}
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getFiles('2089b05ecca3d829')
>>> pprint(r)
[{'index': '1',
'length': '34896138',
'completedLength': '34896138',
'path': '/downloads/file',
'selected': 'true',
'uris': [{'status': 'used',
'uri': 'http://example.org/file'}]}]
aria2.getPeers([secret], gid)
This method returns a list peers of the download denoted by gid
(string). This method is for BitTorrent only. The response is
an array of structs and contains the following keys. Values are
strings.
peerId Percent-encoded peer ID.
ip IP address of the peer.
port Port number of the peer.
bitfield
Hexadecimal representation of the download progress of
the peer. The highest bit corresponds to the piece at
index 0. Set bits indicate the piece is available and
unset bits indicate the piece is missing. Any spare bits
at the end are set to zero.
amChoking
true if aria2 is choking the peer. Otherwise false.
peerChoking
true if the peer is choking aria2. Otherwise false.
downloadSpeed
Download speed (byte/sec) that this client obtains from
the peer.
uploadSpeed
Upload speed(byte/sec) that this client uploads to the
peer.
seeder true is this peer is a seeder. Otherwise false.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getPeers',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': [{u'amChoking': u'true',
u'bitfield': u'ffffffffffffffffffffffffffffffffffffffff',
u'downloadSpeed': u'10602',
u'ip': u'10.0.0.9',
u'peerChoking': u'false',
u'peerId': u'aria2%2F1%2E10%2E5%2D%87%2A%EDz%2F%F7%E6',
u'port': u'6881',
u'seeder': u'true',
u'uploadSpeed': u'0'},
{u'amChoking': u'false',
u'bitfield': u'ffffeff0fffffffbfffffff9fffffcfff7f4ffff',
u'downloadSpeed': u'8654',
u'ip': u'10.0.0.30',
u'peerChoking': u'false',
u'peerId': u'bittorrent client758',
u'port': u'37842',
u'seeder': u'false',
u'uploadSpeed': u'6890'}]}
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getPeers('2089b05ecca3d829')
>>> pprint(r)
[{'amChoking': 'true',
'bitfield': 'ffffffffffffffffffffffffffffffffffffffff',
'downloadSpeed': '10602',
'ip': '10.0.0.9',
'peerChoking': 'false',
'peerId': 'aria2%2F1%2E10%2E5%2D%87%2A%EDz%2F%F7%E6',
'port': '6881',
'seeder': 'true',
'uploadSpeed': '0'},
{'amChoking': 'false',
'bitfield': 'ffffeff0fffffffbfffffff9fffffcfff7f4ffff',
'downloadSpeed': '8654',
'ip': '10.0.0.30',
'peerChoking': 'false',
'peerId': 'bittorrent client758',
'port': '37842',
'seeder': 'false,
'uploadSpeed': '6890'}]
aria2.getServers([secret], gid)
This method returns currently connected HTTP(S)/FTP/SFTP servers
of the download denoted by gid (string). The response is an
array of structs and contains the following keys. Values are
strings.
index Index of the file, starting at 1, in the same order as
files appear in the multi-file metalink.
servers
A list of structs which contain the following keys.
uri Original URI.
currentUri
This is the URI currently used for downloading. If
redirection is involved, currentUri and uri may
differ.
downloadSpeed
Download speed (byte/sec)
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getServers',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': [{u'index': u'1',
u'servers': [{u'currentUri': u'http://example.org/file',
u'downloadSpeed': u'10467',
u'uri': u'http://example.org/file'}]}]}
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getServers('2089b05ecca3d829')
>>> pprint(r)
[{'index': '1',
'servers': [{'currentUri': 'http://example.org/dl/file',
'downloadSpeed': '20285',
'uri': 'http://example.org/file'}]}]
aria2.tellActive([secret][, keys])
This method returns a list of active downloads. The response is
an array of the same structs as returned by the
aria2.tellStatus() method. For the keys parameter, please refer
to the aria2.tellStatus() method.
aria2.tellWaiting([secret], offset, num[, keys])
This method returns a list of waiting downloads, including
paused ones. offset is an integer and specifies the offset from
the download waiting at the front. num is an integer and speci‐
fies the max. number of downloads to be returned. For the keys
parameter, please refer to the aria2.tellStatus() method.
If offset is a positive integer, this method returns downloads
in the range of [offset, offset + num).
offset can be a negative integer. offset == -1 points last down‐
load in the waiting queue and offset == -2 points the download
before the last download, and so on. Downloads in the response
are in reversed order then.
For example, imagine three downloads "A","B" and "C" are waiting
in this order. aria2.tellWaiting(0, 1) returns ["A"].
aria2.tellWaiting(1, 2) returns ["B", "C"]. aria2.tellWait‐
ing(-1, 2) returns ["C", "B"].
The response is an array of the same structs as returned by
aria2.tellStatus() method.
aria2.tellStopped([secret], offset, num[, keys])
This method returns a list of stopped downloads. offset is an
integer and specifies the offset from the least recently stopped
download. num is an integer and specifies the max. number of
downloads to be returned. For the keys parameter, please refer
to the aria2.tellStatus() method.
offset and num have the same semantics as described in the
aria2.tellWaiting() method.
The response is an array of the same structs as returned by the
aria2.tellStatus() method.
aria2.changePosition([secret], gid, pos, how)
This method changes the position of the download denoted by gid
in the queue. pos is an integer. how is a string. If how is
POS_SET, it moves the download to a position relative to the
beginning of the queue. If how is POS_CUR, it moves the 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 an
integer denoting the resulting position.
For example, if GID#2089b05ecca3d829 is currently in position 3,
aria2.changePosition('2089b05ecca3d829', -1, 'POS_CUR') will
change its position to 2. Additionally aria2.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 queue.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.changePosition',
... 'params':['2089b05ecca3d829', 0, 'POS_SET']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': 0}
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.changePosition('2089b05ecca3d829', 0, 'POS_SET')
0
aria2.changeUri([secret], gid, fileIndex, delUris, addUris[, position])
This method removes the URIs in delUris from and appends the
URIs in addUris to download denoted by gid. delUris and addUris
are lists of strings. A download can contain multiple files and
URIs are attached to each file. fileIndex is used to select
which file to remove/attach given URIs. fileIndex is 1-based.
position is used to specify where URIs are inserted in the
existing waiting URI list. position is 0-based. When position is
omitted, URIs are appended to the back of the list. This method
first executes the removal and then the addition. position is
the position after URIs are removed, not the position when this
method is called. When removing an URI, if the same URIs exist
in download, only one of them is removed for each URI in
delUris. In other words, if there are three URIs http://exam‐
ple.org/aria2 and you want remove them all, you have to specify
(at least) 3 http://example.org/aria2 in delUris. This method
returns a list which contains two integers. The first integer is
the number of URIs deleted. The second integer is the number of
URIs added.
The following examples add the URI http://example.org/file to
the file whose index is 1 and belongs to the download
GID#2089b05ecca3d829.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.changeUri',
... 'params':['2089b05ecca3d829', 1, [],
['http://example.org/file']]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': [0, 1]}
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.changeUri('2089b05ecca3d829', 1, [],
['http://example.org/file'])
[0, 1]
aria2.getOption([secret], gid)
This method returns options of the download denoted by gid. The
response is a struct where keys are the names of options. The
values are strings. Note that this method does not return
options which have no default value and have not been set on the
command-line, in configuration files or RPC methods.
The following examples get options of the download
GID#2089b05ecca3d829.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getOption',
... 'params':['2089b05ecca3d829']})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': {u'allow-overwrite': u'false',
u'allow-piece-length-change': u'false',
u'always-resume': u'true',
u'async-dns': u'true',
...
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getOption('2089b05ecca3d829')
>>> pprint(r)
{'allow-overwrite': 'false',
'allow-piece-length-change': 'false',
'always-resume': 'true',
'async-dns': 'true',
....
aria2.changeOption([secret], gid, options)
This method changes options of the download denoted by gid
(string) dynamically. options is a struct. The following
options are available for active downloads:
· bt-max-peers
· bt-request-peer-speed-limit
· bt-remove-unselected-file
· force-save
· max-download-limit
· max-upload-limit
For waiting or paused downloads, in addition to the above
options, options listed in Input File subsection are available,
except for following options: dry-run, metalink-base-uri,
parameterized-uri, pause, piece-length and
rpc-save-upload-metadata option. This method returns OK for
success.
The following examples set the max-download-limit option to 20K
for the download GID#2089b05ecca3d829.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.changeOption',
... 'params':['2089b05ecca3d829',
... {'max-download-limit':'10K'}]})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': u'OK'}
XML-RPC Example
>>> import xmlrpclib
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> s.aria2.changeOption('2089b05ecca3d829', {'max-download-limit':'20K'})
'OK'
aria2.getGlobalOption([secret])
This method returns the global options. The response is a
struct. Its keys are the names of options. Values are strings.
Note that this method does not return options which have no
default value and have not been set on the command-line, in con‐
figuration files or RPC methods. Because global options are used
as a template for the options of newly added downloads, the
response contains keys returned by the aria2.getOption() method.
aria2.changeGlobalOption([secret], options)
This method changes global options dynamically. options is a
struct. The following options are available:
· bt-max-open-files
· download-result
· log
· log-level
· max-concurrent-downloads
· max-download-result
· max-overall-download-limit
· max-overall-upload-limit
· save-cookies
· save-session
· server-stat-of
In addition, options listed in the Input File subsection are
available, except for following options: checksum, index-out,
out, pause and select-file.
With the log option, you can dynamically start logging or change
log file. To stop logging, specify an empty string("") as the
parameter value. Note that log file is always opened in append
mode. This method returns OK for success.
aria2.getGlobalStat([secret])
This method returns global statistics such as the overall down‐
load and upload speeds. The response is a struct and contains
the following keys. Values are strings.
downloadSpeed
Overall download speed (byte/sec).
uploadSpeed
Overall upload speed(byte/sec).
numActive
The number of active downloads.
numWaiting
The number of waiting downloads.
numStopped
The number of stopped downloads in the current session.
This value is capped by the --max-download-result option.
numStoppedTotal
The number of stopped downloads in the current session
and not capped by the --max-download-result option.
JSON-RPC Example
>>> import urllib2, json
>>> from pprint import pprint
>>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
... 'method':'aria2.getGlobalStat'})
>>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
>>> pprint(json.loads(c.read()))
{u'id': u'qwer',
u'jsonrpc': u'2.0',
u'result': {u'downloadSpeed': u'21846',
u'numActive': u'2',
u'numStopped': u'0',
u'numWaiting': u'0',
u'uploadSpeed': u'0'}}
XML-RPC Example
>>> import xmlrpclib
>>> from pprint import pprint
>>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
>>> r = s.aria2.getGlobalStat()
>>> pprint(r)
{'downloadSpeed': '23136',
'numActive': '2',
'numStopped': '0',
'numWaiting': '0',
'uploadSpeed': '0'}
aria2.purgeDownloadResult([secret])
This method purges completed/error/removed downloads to free
memory. This method returns OK.
aria2.removeDownloadResult([secret], gid)
This method removes a completed/error/removed download denoted
by gid from memory. This method returns OK for success.
The following examples remove the download result of the 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([secret])
This method returns the version of aria2 and the list of enabled
features. The response is a struct and contains following keys.
version
Version number of aria2 as a string.
enabledFeatures
List of enabled features. Each feature is given as a
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([secret])
This method returns session information. The response is a
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([secret])
This method shuts down aria2. This method returns OK.
aria2.forceShutdown([secret])
This method shuts down aria2(). This method behaves like
:func:'aria2.shutdown` without performing any actions which take
time, such as contacting BitTorrent trackers to unregister down‐
loads first. This method returns OK.
aria2.saveSession([secret])
This method saves the current session to a file specified by the
--save-session option. This method returns OK if it succeeds.
system.multicall(methods)
This methods encapsulates multiple method calls in a single
request. methods is an array of structs. The structs contain
two keys: methodName and params. methodName is the method name
to call and params is array containing parameters to the method
call. This method returns an array of responses. The elements
will be either a one-item array containing the return value of
the method call or a struct of fault element if an encapsulated
method call fails.
In the following examples, we add 2 downloads. The first one is
http://example.org/file and the 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 additionally supports Batch requests as described in
the 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', mode='rb').read()))
>>> r = mc()
>>> tuple(r)
('2089b05ecca3d829', 'd2703803b52216d1')
Error Handling
Over JSON-RPC, aria2 returns a JSON object which contains an error code
in code and the error message in message.
Over XML-RPC, aria2 returns faultCode=1 and the error message in fault‐
String.
Options
The same options as for --input-file are available. See the Input File
subsection for a complete list of options.
In the option struct, the name element is the option name (without the
preceding --) and the value element is the argument as a 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>
The header and index-out options are allowed multiple times on the com‐
mand-line. Since the name should be unique in a struct (many XML-RPC
library implementations use a hash or dict for struct), a single string
is not enough. To overcome this limitation, you may use an array as the
value as well as a 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>
The following example adds a download with two options: dir and header.
The header option requires two 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 requests 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 also supports JSONP. You can specify the call‐
back function in the jsoncallback parameter:
/jsonrpc?method=aria2.tellStatus&id=foo¶ms=WyIyMDg5YjA1ZWNjYTNkODI5Il0%3D&jsoncallback=cb
For Batch requests, the method and id parameters must not be specified.
The whole request must be specified in the params parameter. For exam‐
ple, a Batch request:
[{'jsonrpc':'2.0', 'id':'qwer', 'method':'aria2.getVersion'},
{'jsonrpc':'2.0', 'id':'asdf', 'method':'aria2.tellActive'}]
must be encoded like this:
/jsonrpc?params=W3sianNvbnJwYyI6ICIyLjAiLCAiaWQiOiAicXdlciIsICJtZXRob2QiOiAiYXJpYTIuZ2V0VmVyc2lvbiJ9LCB7Impzb25ycGMiOiAiMi4wIiwgImlkIjogImFzZGYiLCAibWV0aG9kIjogImFyaWEyLnRlbGxBY3RpdmUifV0%3D
JSON-RPC over WebSocket
JSON-RPC over WebSocket uses same method signatures and response format
as 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 a serialized JSON string
in a Text frame. The response from the RPC server is delivered also in
a Text frame.
Notifications
The RPC server might send notifications to the client. Notifications is
unidirectional, therefore the client which receives the notification
must not respond to it. The method signature of a notification is much
like a normal method request but lacks the id key. The value of the
params key is the data which this notification carries. The format of
the value varies depending on the notification method. Following noti‐
fication methods are defined.
aria2.onDownloadStart(event)
This notification will be sent when 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 when a download is paused. The
event is the same struct as the event argument of
aria2.onDownloadStart() method.
aria2.onDownloadStop(event)
This notification will be sent when a download is stopped by the
user. The event is the same struct as the event argument of
aria2.onDownloadStart() method.
aria2.onDownloadComplete(event)
This notification will be sent when a download is complete. For
BitTorrent downloads, this notification is sent when the down‐
load is complete 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 when a download is stopped due to
an error. The event is the same struct as the event argument of
aria2.onDownloadStart() method.
aria2.onBtDownloadComplete(event)
This notification will be sent when a torrent download is com‐
plete but seeding is still going on. The event is the same
struct as the event argument of aria2.onDownloadStart() method.
Sample XML-RPC Client Code
The following Ruby script adds http://localhost/aria2.tar.bz2 to aria2c
(running on localhost) with option --dir=/downloads and prints the RPC
response:
#!/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 (Python3 uses xml‐
rpc.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 a readout to the console to show
the progress of the downloads. The console readout looks 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 the GID as a hex string. The GID is an
unique ID for each download, internal to aria2. The GID is par‐
ticularly useful when interacting with aria2 using the RPC
interface.
X/Y(Z%)
Completed length, the total file length and its progress. If
--select-file is used, this is the sum of selected files.
SEED Share ratio when the aria2 is seeding a finished torrent.
CN The number of connections aria2 has established.
SD The number of seeders aria2 is connected to.
DL Download speed (bytes per second).
UL Upload speed (bytes per second) and the number of uploaded
bytes.
ETA Expected time to finish the download.
When more than one download is in progress, some of the information
described above will be omitted in order to show information for sev‐
eral downloads. And the overall download and upload speeds are shown at
the beginning of the line.
When aria2 is allocating file space or validating checksums, it addi‐
tionally prints the progress of these operations:
FileAlloc
GID, already allocated length and total length in bytes.
Checksum
GID, already validated length and total length in bytes.
EXAMPLE
HTTP/FTP Segmented Downloads
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 two different HTTP servers
$ aria2c "http://host/file.zip" "http://mirror/file.zip"
Download a file from one host using multiple connections
$ aria2c-x2 -k1M "http://host/file.zip"
NOTE:
The -x option specified the number of allowed connections, while the
-k option specified the size of chunks.
Download a file from HTTP and FTP servers at the same time
$ 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 a 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 environment
variables. See ENVIRONMENT section.
Using a 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
$ 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 using a 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 later
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 URIs which include & charac‐
ters with single(') or double(") quotes when specifying URIs on the
command-line.
Download 2 torrents
$ aria2c-j2 file1.torrent file2.torrent
Download a file via torrent and HTTP/FTP server in parallel
$ aria2c-Ttest.torrent "http://host1/file" "ftp://host2/file"
NOTE:
Downloading a multi-file torrent while also using HTTP/FTP is not
supported.
Only download specific files (usually called selected download )
$ aria2c --select-file=1-4,8 file.torrent
NOTE:
The index is printed to the console using -S option.
Download a .torrent file, but do not download the torrent
$ aria2c --follow-torrent=false "http://host/file.torrent"
Specify the output file name
To specify the output file name for BitTorrent downloads, you need to
know the index of file in the torrent (see --show-files). For example,
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 ports for incoming peer connections
$ aria2c --listen-port=7000-7001,8000 file.torrent
NOTE:
Since aria2 doesn't configure firewalls or routers for port forward‐
ing, it's up to you to do so manually.
Specify conditions to stop seeding after torrent downloads finish
$ aria2c --seed-time=120 --seed-ratio=1.0 file.torrent
NOTE:
In the above example, the program stops seeding after 120 minutes
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. Since aria2 doesn't configure firewalls or routers 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 uses the same ports as IPv4 for IPv6.
Add and remove tracker URIs
Ignore all tracker announce URIs defined 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 files without modifi‐
cation.
Resume download started by web browsers or other programs
$ aria2c-c -s2 "http://host/partiallydownloadedfile.zip"
NOTE:
This will only work when the initial download was not multi-seg‐
mented.
Client certificate authorization for SSL/TLS
Specify a PKCS12 file as follows:
$ aria2c --certificate=/path/to/mycert.p12
NOTE:
The file specified in --certificate must be contain one PKCS12
encoded certificate and key. The password must be blank.
Alternatively, if PEM files are supported, use a command like the fol‐
lowing:
$ 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 SSL/TLS servers using given CA certificates
$ aria2c --ca-certificate=/path/to/ca-certificates.crt --check-certificate https://host/file
NOTE:
This option is only available when aria2 was compiled against GnuTLS
or OpenSSL. WinTLS and AppleTLS will always use the system certifi‐
cate store. Instead of `--ca-certificate install the certificate in
that store.
RPC
Encrypt RPC traffic with SSL/TLS
Specify a server PKC12 file:
$ aria2c--enable-rpc --rpc-certificate=/path/to/server.p12 --rpc-secure
NOTE:
The file specified in --rpc-certificate must be contain one PKCS12
encoded certificate and key. The password must be blank.
Alternatively, when PEM files are supported (GnuTLS and OpenSSL), spec‐
ify the 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 the download speed
Per-download:
$ aria2c --max-download-limit=100K file.metalink
Overall:
$ aria2c --max-overall-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 connections if download speed is lower than a specified limit
$ 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:
The -Z option is required if the URIs don't point to the same file,
such as in the above example.
You can specify step counter:
$ aria2c-Z -P "http://host/image[A-Z:2].png"
Verifying checksums
$ aria2c --checksum=sha-1=0192ba11326fe2298c8cb4de616f4d4140213837 http://example.org/file
Parallel downloads of an arbitrary number of URIs, metalink, torrent
$ aria2c-j3 -Z "http://host/file1" file2.torrent file3.metalink
BitTorrent Encryption
Encrypt the whole payload using ARC4 (obfuscation):
$ aria2c --bt-min-crypto-level=arc4 --bt-require-crypto=true file.torrent
SEE ALSO
Project Web Site: http://aria2.sourceforge.net/
Metalink Homepage: http://www.metalinker.org/
The Metalink Download Description Format: RFC 5854
COPYRIGHT
Copyright (C) 2006, 2015 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.
1.19.3 December 06, 2015 ARIA2C(1)