Provided by: aria2_1.13.0-1_amd64 bug

NAME

       aria2c - The ultra fast download utility

SYNOPSIS

       aria2c [OPTIONS] [URI | MAGNET | TORRENT_FILE | METALINK_FILE]...

DESCRIPTION

       aria2 is a utility for downloading files. The supported protocols are HTTP(S), FTP,
       BitTorrent, and Metalink. aria2 can download a file from multiple sources/protocols and
       tries to utilize your maximum download bandwidth. It supports downloading a file from
       HTTP(S)/FTP and BitTorrent at the same time, while the data downloaded from HTTP(S)/FTP is
       uploaded to the BitTorrent swarm. Using Metalink’s chunk checksums, aria2 automatically
       validates chunks of data while downloading a file like BitTorrent.

OPTIONS

   Basic Options
       -d, --dir=DIR
           The directory to store the downloaded file.

       -i, --input-file=FILE
           Downloads URIs found in FILE. You can specify multiple URIs for a single entity:
           separate URIs on a single line using the TAB character. Reads input from stdin when -
           is specified. Additionally, options can be specified after each line of URI. This
           optional line must start with one or more white spaces and have one option per single
           line. See Input File subsection for details.

       -l, --log=LOG
           The file name of the log file. If - is specified, log is written to stdout. If empty
           string("") is specified, log is not written to file.

       -j, --max-concurrent-downloads=N
           Set maximum number of parallel downloads for every static (HTTP/FTP) URI, torrent and
           metalink. See also -s and -C option. Default: 5

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

       -c, --continue[=true|false]
           Continue downloading a partially downloaded file. Use this option to resume a download
           started by a web browser or another program which downloads files sequentially from
           the beginning. Currently this option is only applicable to HTTP(S)/FTP downloads.

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

   HTTP/FTP Options
       --all-proxy=PROXY
           Use this proxy server for all protocols. To erase previously defined proxy, use "".
           You 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 URIs. The
           format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]. See also ENVIRONMENT section.

           Note
           If user and password are embedded in proxy URI and they are also specified by
           --{http,https,ftp,all}-proxy-{user,passwd} options, those appeared later have
           precedence. For example, you have http-proxy-user="myname", http-proxy-passwd="mypass"
           in aria2.conf and you specify --http-proxy="http://proxy" in command-line, then you
           get HTTP proxy "http://proxy" with user "myname" and password "mypass". Another
           example: if you specified in command-line --http-proxy="http://user:pass@proxy"
           --http-proxy-user="myname" --http-proxy-passwd="mypass", then you will get HTTP proxy
           "http://proxy" with user "myname" and password "mypass". One more example: if you
           specified in command-line --http-proxy-user="myname" --http-proxy-passwd="mypass"
           --http-proxy="http://user:pass@proxy", then you get HTTP proxy "http://proxy" with
           user "user" and password "pass".

       --all-proxy-passwd=PASSWD
           Set password for --all-proxy option.

       --all-proxy-user=USER
           Set user for --all-proxy option.

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

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

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

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

       -x, --max-connection-per-server=NUM
           The maximum number of connections to one server for each download. Default: 1

       --max-file-not-found=NUM
           If aria2 receives ‘file not found’ status from the remote HTTP/FTP servers NUM times
           without getting a single byte, then force the download to fail. Specify 0 to disable
           this option. This options is effective only when using HTTP/FTP servers. Default: 0

       -m, --max-tries=N
           Set number of tries.  0 means unlimited. See also --retry-wait. Default: 5

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

       -n, --no-netrc[=true|false]
           Disables netrc support. netrc support is enabled by default.

       --no-proxy=DOMAINS
           Specify comma separated hostnames, domains and network address with or without CIDR
           block where proxy should not be used.

           Note
           For network address with CIDR block, only IPv4 address works. Current implementation
           does not resolve hostname in URI to compare network address specified in --no-proxy.
           So it is only effecive if URI has numeric IP addresses.

       -o, --out=FILE
           The file name of the downloaded file. When -Z option is used, this option is ignored.

           Note
           In Metalink or BitTorrent download you cannot specify file name. The file name
           specified here is only used when the URIs fed to aria2 are done by command line
           without -i, -Z option. For example: aria2c -o myfile.zip "http://mirror1/file.zip"
           "http://mirror2/file.zip"

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

       -R, --remote-time[=true|false]
           Retrieve timestamp of the remote file from the remote HTTP/FTP server and if it is
           available, apply it to the local file. Default: false

       --reuse-uri[=true|false]
           Reuse already used URIs if no unused URIs are left. Default: true

       --retry-wait=SEC
           Set the seconds to wait between retries. With SEC > 0, aria2 will retry download when
           the HTTP server returns 503 response. Default: 0

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

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

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

       -s, --split=N
           Download a file using N connections. If more than N URIs are given, first N URIs are
           used and remaining URIs are used for backup. If less than N URIs are given, those URIs
           are used more than once so that N connections total are made simultaneously. The
           number of connections to the same host is restricted by --max-connection-per-server
           option. Please see -j and --min-split-size option too. Please note that in Metalink
           download, this option has no effect and use -C option instead. Default: 5

       --stream-piece-selector=SELECTOR
           Specify piece selection algorithm used in HTTP/FTP download. Piece means fixed length
           segment which is downloaded in parallel in segmented download. If default is given,
           aria2 selects piece so that it reduces the number of establishing connection. This is
           reasonable default behaviour because establishing connection is an expensive
           operation. If inorder is given, aria2 selects piece which has minimum index. Index=0
           means first of the file. This will be useful to view movie while downloading it.
           --enable-http-pipelining option may be useful to reduce reconnection 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
           establishing connection and at the same time it will download the beginning part of
           the file first. This will be useful to view movie while downloading it. Default:
           default

       -t, --timeout=SEC
           Set timeout in seconds. Default: 60

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

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

       --certificate=FILE
           Use the client certificate in FILE. The certificate must be in PEM format. You may use
           --private-key option to specify the private key.

       --check-certificate[=true|false]
           Verify the peer using certificates specified in --ca-certificate option. Default: true

       --http-accept-gzip[=true|false]
           Send "Accept: deflate, gzip" request header and inflate response if remote server
           responds with "Content-Encoding: gzip" or "Content-Encoding: deflate". Default: false

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

       --http-auth-challenge[=true|false]
           Send HTTP authorization header only when it is requested by the server. If false is
           set, then authorization header is always sent to the server. There is an exception: if
           username and password are embedded in URI, authorization header is always sent to the
           server regardless of this option. Default: false

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

       --http-user=USER
           Set HTTP user. This affects all URIs.

       --http-passwd=PASSWD
           Set HTTP password. This affects all URIs.

       --http-proxy=PROXY
           Use this proxy server for HTTP. To erase previously defined proxy, use "". See also
           --all-proxy option. This affects all URIs. The format of PROXY is
           [http://][USER:PASSWORD@]HOST[:PORT]

       --http-proxy-passwd=PASSWD
           Set password for --http-proxy option.

       --http-proxy-user=USER
           Set user for --http-proxy option.

       --https-proxy=PROXY
           Use this proxy server for HTTPS. To erase previously defined proxy, use "". See also
           --all-proxy option. This affects all URIs. The format of PROXY is
           [http://][USER:PASSWORD@]HOST[:PORT]

       --https-proxy-passwd=PASSWD
           Set password for --https-proxy option.

       --https-proxy-user=USER
           Set user for --https-proxy option.

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

       --referer=REFERER
           Set Referer. This affects all URIs.

       --enable-http-keep-alive[=true|false]
           Enable HTTP/1.1 persistent connection. Default: true

       --enable-http-pipelining[=true|false]
           Enable HTTP/1.1 pipelining. Default: false

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

       --header=HEADER
           Append HEADER to HTTP request header. You can use this option repeatedly to specify
           more than one header: aria2c --header="X-A: b78" --header="X-B: 9J1"
           "http://host/file"

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

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

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

       --use-head[=true|false]
           Use HEAD method for the first request to the HTTP server. Default: false

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

   FTP Specific Options
       --ftp-user=USER
           Set FTP user. This affects all URIs. Default: anonymous

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

       -p, --ftp-pasv[=true|false]
           Use the passive mode in FTP. If false is given, the active mode will be used. Default:
           true

       --ftp-proxy=PROXY
           Use this proxy server for FTP. To erase previously defined proxy, use "". See also
           --all-proxy option. This affects all URIs. The format of PROXY is
           [http://][USER:PASSWORD@]HOST[:PORT]

       --ftp-proxy-passwd=PASSWD
           Set password for --ftp-proxy option.

       --ftp-proxy-user=USER
           Set user for --ftp-proxy option.

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

       --ftp-reuse-connection[=true|false]
           Reuse connection in FTP. Default: true

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

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

       -S, --show-files[=true|false]
           Print file listing of .torrent, .meta4 and .metalink file and exit. In case of
           .torrent file, additional information (infohash, piece length, etc) is also printed.

   BitTorrent Specific Options
       --bt-enable-lpd[=true|false]
           Enable Local Peer Discovery. If a private flag is set in a torrent, aria2 doesn’t use
           this feature for that download even if true is given. Default: false

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

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

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

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

       --bt-max-open-files=NUM
           Specify maximum number of files to open in each BitTorrent download. Default: 100

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

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

       --bt-min-crypto-level=plain|arc4
           Set minimum level of encryption method. If several encryption methods are provided by
           a peer, aria2 chooses the lowest one which satisfies the given level. Default: plain

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

       --bt-require-crypto[=true|false]
           If true is given, aria2 doesn’t accept and establish connection with legacy BitTorrent
           handshake(\19BitTorrent protocol). Thus aria2 always uses Obfuscation handshake.
           Default: false

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

       --bt-save-metadata[=true|false]
           Save metadata as .torrent file. This option has effect only when BitTorrent Magnet URI
           is used. The filename is hex encoded info hash with suffix .torrent. The directory to
           be saved is the same directory where download file is saved. If the same file already
           exists, metadata is not saved. See also --bt-metadata-only option. Default: false

       --bt-seed-unverified[=true|false]
           Seed previously downloaded files without verifying piece hashes. Default: false

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

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

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

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

       --bt-tracker-timeout=SEC
           Set timeout in seconds. Default: 60

       --dht-entry-point=HOST:PORT
           Set host and port as an entry point to IPv4 DHT network.

       --dht-entry-point6=HOST:PORT
           Set host and port as an entry point to IPv6 DHT network.

       --dht-file-path=PATH
           Change the IPv4 DHT routing table file to PATH. Default: $HOME/.aria2/dht.dat

       --dht-file-path6=PATH
           Change the IPv6 DHT routing table file to PATH. Default: $HOME/.aria2/dht6.dat

       --dht-listen-addr6=ADDR
           Specify address to bind socket for IPv6 DHT. It should be a global unicast IPv6
           address of the host.

       --dht-listen-port=PORT...
           Set UDP listening port for both IPv4 and IPv6 DHT. 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. If a private flag is set in a torrent, aria2 doesn’t
           use DHT for that download even if true is given. Default: true

       --enable-dht6[=true|false]
           Enable IPv6 DHT functionality. If a private flag is set in a torrent, aria2 doesn’t
           use DHT for that download even if true is given. Use --dht-listen-port option to
           specify port number to listen on. See also --dht-listen-addr6 option.

       --enable-peer-exchange[=true|false]
           Enable Peer Exchange extension. If a private flag is set in a torrent, this feature is
           disabled for that download even if true is given. Default: true

       --follow-torrent=true|false|mem
           If true or mem is specified, when a file whose suffix is ".torrent" or content type is
           "application/x-bittorrent" is downloaded, aria2 parses it as a torrent file and
           downloads files mentioned in it. If mem is specified, a torrent file is not written to
           the disk, but is just kept in memory. If false is specified, the action mentioned
           above is not taken. Default: true

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

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

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

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

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

       --peer-id-prefix=PEER_ID_PREFIX
           Specify the prefix of peer ID. The peer ID in BitTorrent is 20 byte length. If more
           than 20 bytes are specified, only first 20 bytes are used. If less than 20 bytes are
           specified, random byte data are added to make its length 20 bytes. Default:
           aria2/$VERSION-, $VERSION is replaced by package version.

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

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

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

       -T, --torrent-file=TORRENT_FILE
           The path to the .torrent file. You are not required to use this option because you can
           specify .torrent files without -T.

   Metalink Specific Options
       --follow-metalink=true|false|mem
           If true or mem is specified, when a file whose suffix is ".meta4" or ".metalink" or
           content type of "application/metalink4+xml" or "application/metalink+xml" is
           downloaded, aria2 parses it as a metalink file and downloads files mentioned in it. If
           mem is specified, a metalink file is not written to the disk, but is just kept in
           memory. If false is specified, the action mentioned above is not taken. Default: true

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

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

       -C, --metalink-servers=NUM_SERVERS
           The number of servers to connect to simultaneously. Some Metalinks regulate the number
           of servers to connect. aria2 strictly respects them. This means that if Metalink
           defines the maxconnections attribute lower than NUM_SERVERS, then aria2 uses the value
           of maxconnections attribute instead of NUM_SERVERS. See also -s and -j options.
           Default: 5

       --metalink-language=LANGUAGE
           The language of the file to download.

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

       --metalink-os=OS
           The operating system of the file to download.

       --metalink-version=VERSION
           The version of the file to download.

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

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

   RPC Options
       --enable-rpc[=true|false]
           Enable JSON-RPC/XML-RPC server. It is strongly recommended to set username and
           password using --rpc-user and --rpc-passwd option. See also --rpc-listen-port option.
           Default: false

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

       --rpc-allow-origin-all[=true|false]
           Add Access-Control-Allow-Origin header field with value * to the RPC response.
           Default: false

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

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

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

       --rpc-passwd=PASSWD
           Set JSON-RPC/XML-RPC password.

       --rpc-user=USER
           Set JSON-RPC/XML-RPC user.

   Advanced Options
       --allow-overwrite[=true|false]
           Restart download from scratch if the corresponding control file doesn’t exist. See
           also --auto-file-renaming option. Default: false

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

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

       --async-dns[=true|false]
           Enable asynchronous DNS. Default: true

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

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

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

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

       --conf-path=PATH
           Change the configuration file path to PATH. Default: $HOME/.aria2/aria2.conf

       -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

       --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

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

       --enable-async-dns6[=true|false]
           Enable IPv6 name resolution in asynchronous DNS resolver. This option will be ignored
           when --async-dns=false. Default: false

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

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

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

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

       --interface=INTERFACE
           Bind sockets to given interface. You can specify interface name, IP address and
           hostname. Possible Values: interface, IP address, hostname

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

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

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

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

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

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

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

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

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

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

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

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

       --show-console-readout[=true|false]
           Show console readout. Default: true

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

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

       -Z, --force-sequential[=true|false]
           Fetch URIs in the command-line sequentially and download each URI in a separate
           session, like the usual command-line download utilities. Default: false

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

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

       --no-conf[=true|false]
           Disable loading aria2.conf file.

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

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

       -q, --quiet[=true|false]
           Make aria2 quiet (no console output). Default: false

       --realtime-chunk-checksum[=true|false]
           Validate chunk of data by calculating checksum while downloading a file if chunk
           checksums are provided. Default: true

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

           Note
           For Metalink downloads, -C1 is recommended for proxy server which disables resume, in
           order to avoid establishing unnecessary connections.

       --save-session=FILE
           Save error/unfinished downloads to FILE on exit. You can pass this output file to
           aria2c with -i option on restart. Please note that downloads added by aria2.addTorrent
           and aria2.addMetalink RPC method and whose metadata could not be saved as a file are
           not saved. Downloads removed using aria2.remove and aria2.forceRemove will not be
           saved.

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

       --truncate-console-readout[=true|false]
           Truncate console readout to fit in a single line. Default: true

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

   Options That Take An Optional Argument
       The options that have its argument surrounded by square brackets([]) take an optional
       argument. Usually omiting the argument is evaluated to true. If you use short form of
       these options(such as -V) and give an argument, then the option name and its argument
       should be concatenated(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.

   URI, MAGNET, TORRENT_FILE, METALINK_FILE
       You can specify multiple URIs in command-line. Unless you specify -Z option, all URIs must
       point to the same file or downloading will fail.

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

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

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

           Note
           Make sure that URI is quoted with single(') or double(") 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 -c option to continue the transfer(aria2c -c URI).

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

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

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

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

EXIT STATUS

       Because aria2 can handle multiple downloads at once, it encounters lots of errors in a
       session. aria2 returns the following exit status based on the last error encountered.

       0
           If all downloads were successful.

       1
           If an unknown error occurred.

       2
           If time out occurred.

       3
           If a resource was not found.

       4
           If aria2 saw the specfied number of "resource not found" error. See
           --max-file-not-found option).

       5
           If a download aborted because download speed was too slow. See --lowest-speed-limit
           option)

       6
           If network problem occurred.

       7
           If there were unfinished downloads. This error is only reported if all finished
           downloads were successful and there were unfinished downloads in a queue when aria2
           exited by pressing Ctrl-C by an user or sending TERM or INT signal.

       8
           If remote server did not support resume when resume was required to complete download.

       9
           If there was not enough disk space available.

       10
           If piece length was different from one in .aria2 control file. See
           --allow-piece-length-change option.

       11
           If aria2 was downloading same file at that moment.

       12
           If aria2 was downloading same info hash torrent at that moment.

       13
           If file already existed. See --allow-overwrite option.

       14
           If renaming file failed. See --auto-file-renaming option.

       15
           If aria2 could not open existing file.

       16
           If aria2 could not create new file or truncate existing file.

       17
           If file I/O error occurred.

       18
           If aria2 could not create directory.

       19
           If name resolution failed.

       20
           If aria2 could not parse Metalink document.

       21
           If FTP command failed.

       22
           If HTTP response header was bad or unexpected.

       23
           If too many redirections occurred.

       24
           If HTTP authorization failed.

       25
           If aria2 could not parse bencoded file(usually .torrent file).

       26
           If .torrent file was corrupted or missing information that aria2 needed.

       27
           If Magnet URI was bad.

       28
           If bad/unrecognized option was given or unexpected option argument was given.

       29
           If the remote server was unable to handle the request due to a temporary overloading
           or maintenance.

       30
           If aria2 could not parse JSON-RPC request.

           Note
           An error occurred in a finished download will not be reported as exit status.

ENVIRONMENT

       aria2 recognizes the following environment variables.

       http_proxy [http://][USER:PASSWORD@]HOST[:PORT]
           Specify proxy server for use in HTTP. Overrides http-proxy value in configuration
           file. The command-line option --http-proxy overrides this value.

       https_proxy [http://][USER:PASSWORD@]HOST[:PORT]
           Specify proxy server for use in HTTPS. Overrides https-proxy value in configuration
           file. The command-line option --https-proxy overrides this value.

       ftp_proxy [http://][USER:PASSWORD@]HOST[:PORT]
           Specify proxy server for use in FTP. Overrides ftp-proxy value in configuration file.
           The command-line option --ftp-proxy overrides this value.

       all_proxy [http://][USER:PASSWORD@]HOST[:PORT]
           Specify proxy server for use if no protocol-specific proxy is specified. Overrides
           all-proxy value in configuration file. The command-line option --all-proxy overrides
           this value.

           Note
           Although aria2 accepts ftp:// and https:// scheme in proxy URI, it simply assumes that
           http:// is specified and does not change its behavior based on the specified scheme.

       no_proxy [DOMAIN,...]
           Specify comma-separated hostname, domains and network address with or without CIDR
           block to which proxy should not be used. Overrides no-proxy value in configuration
           file. The command-line option --no-proxy overrides this value.

FILES

   aria2.conf
       By default, aria2 parses $HOME/.aria2/aria2.conf as a configuraiton file. You can specify
       the path to configuration file using --conf-path option. If you don’t want to use the
       configuraitonf file, use --no-conf option.

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

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

   dht.dat
       By default, the routing table of IPv4 DHT is saved to the path $HOME/.aria2/dht.dat and
       the routing table of IPv6 DHT is saved to the path $HOME/.aria2/dht6.dat.

   Netrc
       Netrc support is enabled by default for HTTP(S)/FTP. To disable netrc support, specify -n
       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

       In domain match, aria2.example.org matches .example.org and uses myid and mypasswd.
       example.org also matches .example.org. But example.net does not match .example.org.

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

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

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

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

       Each line is treated as if it is provided in command-line argument. Therefore they are
       affected by -Z and -P options.

       Lines starting with "#" are treated as comments and skipped.

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

       ·    all-proxy

       ·    all-proxy-passwd

       ·    all-proxy-user

       ·    allow-overwrite

       ·    allow-piece-length-change

       ·    always-resume

       ·    async-dns

       ·    auto-file-renaming

       ·    bt-enable-lpd

       ·    bt-exclude-tracker

       ·    bt-external-ip

       ·    bt-hash-check-seed

       ·    bt-max-open-files

       ·    bt-max-peers

       ·    bt-metadata-only

       ·    bt-min-crypto-level

       ·    bt-prioritize-piece

       ·    bt-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

       ·    conditional-get

       ·    connect-timeout

       ·    continue

       ·    dir

       ·    dry-run

       ·    enable-async-dns6

       ·    enable-http-keep-alive

       ·    enable-http-pipelining

       ·    enable-peer-exchange

       ·    file-allocation

       ·    follow-metalink

       ·    follow-torrent

       ·    ftp-passwd

       ·    ftp-pasv

       ·    ftp-proxy

       ·    ftp-proxy-passwd

       ·    ftp-proxy-user

       ·    ftp-reuse-connection

       ·    ftp-type

       ·    ftp-user

       ·    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-enable-unique-protocol

       ·    metalink-language

       ·    metalink-location

       ·    metalink-os

       ·    metalink-preferred-protocol

       ·    metalink-servers

       ·    metalink-version

       ·    min-split-size

       ·    no-file-allocation-limit

       ·    no-netrc

       ·    no-proxy

       ·    out

       ·    parameterized-uri

       ·    proxy-method

       ·    realtime-chunk-checksum

       ·    referer

       ·    remote-time

       ·    remove-control-file

       ·    reuse-uri

       ·    seed-ratio

       ·    seed-time

       ·    select-file

       ·    split

       ·    timeout

       ·    use-head

       ·    user-agent

       ·    retry-wait

       ·    metalink-base-uri

       ·    pause

       ·    stream-piece-selector

       ·    hash-check-only

       ·    checksum

       ·    piece_length

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

       For example, the content of uri.txt is

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

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

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

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

       host
           Hostname of the server. Required.

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

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

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

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

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

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

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

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

       An example follows:

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

RPC INTERFACE

       aria2 provides both JSON-RPC and XML-RPC and they basically have the same functionality.

       The request path of JSON-RPC interface is /jsonrpc. The request path of XML-RPC interface
       is /rpc.

       The implemented JSON-RPC is based on JSON-RPC 2.0 Specification (2010-03-26) and supports
       HTTP POST and GET (JSONP).

       The JSON-RPC interface does not support notification. It also does not support floating
       point number. The character encoding must be UTF-8.

       When reading following document for JSON-RPC, interpret struct as JSON object.

   Terminology
       GID
           GID(or gid) is the key to manage each download. Each download has an unique GID.
           Currently GID looks like an integer, but don’t treat it as integer because it may be
           changed to another type in the future release. Please note that GID is session local
           and not persisted when aria2 exits.

   Methods
       All code examples come from Python2.7 interpreter.

       aria2.addUri (uris[, options[, position]])
           This method adds new HTTP(S)/FTP/BitTorrent Magnet URI. uris is of type array and its
           element is URI which is of type string. For BitTorrent Magnet URI, uris must have only
           one element and it should be BitTorrent Magnet URI. URIs in uris must point to the
           same file. If you mix other URIs which point to another file, aria2 does not complain
           but download may fail. options is of type struct and its members are a pair of option
           name and value. See Options below for more details. If position is given as an integer
           starting from 0, the new download is inserted at position in the waiting queue. If
           position is not given or position is larger than the size of the queue, it is appended
           at the end of the queue. This method returns GID of registered download.

           The following example adds http://example.org/file to aria2:

               >>> 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":"1"}'

           The following example adds http://example.org/file to aria2:

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.addUri(['http://example.org/file'])
               '1'

           The following example adds 2 sources and some options:

               >>> s.aria2.addUri(['http://example.org/file', 'http://mirror/file'],
                                   dict(dir="/tmp"))
               '2'

           The following example adds a download and insert it to the front of waiting downloads:

               >>> s.aria2.addUri(['http://example.org/file'], {}, 0)
               '3'

       aria2.addTorrent (torrent[, uris[, options[, position]]])
           This method adds BitTorrent download by uploading .torrent file. If you want to add
           BitTorrent Magnet URI, use aria2.addUri method instead. torrent is of type base64
           which contains Base64-encoded .torrent file. uris is of type array and its element is
           URI which is of type string. uris is used for Web-seeding. For single file torrents,
           URI can be a complete URI pointing to the resource or if URI ends with /, name in
           torrent file is added. For multi-file torrents, name and path in torrent are added to
           form a URI for each file. options is of type struct and its members are a pair of
           option name and value. See Options below for more details. If position is given as an
           integer starting from 0, the new download is inserted at position in the waiting
           queue. If position is not given or position is larger than the size of the queue, it
           is appended at the end of the queue. This method returns GID of registered download.
           The uploaded data is saved as a file named hex string of SHA-1 hash of data plus
           ".torrent" in the directory specified by --dir option. The example of filename is
           0a3893293e27ac0490424c06de4d09242215f0a6.torrent. If same file already exists, it is
           overwritten. If the file cannot be saved successfully, the downloads added by this
           method are not saved by --save-session.

           The following example adds local file file.torrent to aria2:

               >>> 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":"6"}'

           The following example adds local file file.torrent to aria2:

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.addTorrent(xmlrpclib.Binary(open('file.torrent').read()))
               '6'

       aria2.addMetalink (metalink[, options[, position]])
           This method adds Metalink download by uploading .metalink file. metalink is of type
           base64 which contains Base64-encoded .metalink file. options is of type struct and its
           members are a pair of option name and value. See Options below for more details. If
           position is given as an integer starting from 0, the new download is inserted at
           position in the waiting queue. If position is not given or position is larger than the
           size of the queue, it is appended at the end of the queue. This method returns array
           of GID of registered download. The uploaded data is saved as a file named hex string
           of SHA-1 hash of data plus ".metalink" in the directory specified by --dir option. The
           example of filename is 0a3893293e27ac0490424c06de4d09242215f0a6.metalink. If same file
           already exists, it is overwritten. If the file cannot be saved successfully, the
           downloads added by this method are not saved by --save-session.

           The following example adds local file file.meta4 to aria2:

               >>> 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":["8"]}'

           The following example adds local file file.meta4 to aria2:

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.addMetalink(xmlrpclib.Binary(open('file.meta4').read()))
               ['8']

       aria2.remove (gid)
           This method removes the download denoted by gid. gid is of type string. If specified
           download is in progress, it is stopped at first. The status of removed download
           becomes "removed". This method returns GID of removed download.

           The following example removes download whose GID is "3":

               >>> import urllib2, json
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.remove', 'params':['3']})
               >>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
               >>> c.read()
               '{"id":"qwer","jsonrpc":"2.0","result":"3"}'

           The following example removes download whose GID is "3":

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.remove('3')
               '3'

       aria2.forceRemove (gid)
           This method removes the download denoted by gid. This method behaves just like
           aria2.remove except that this method removes download without any action which takes
           time such as contacting BitTorrent tracker.

       aria2.pause (gid)
           This method pauses the download denoted by gid. gid is of type string. The status of
           paused download becomes "paused". If the download is active, the download is placed on
           the first position of waiting queue. As long as the status is "paused", the download
           is not started. To change status to "waiting", use aria2.unpause method. This method
           returns GID of paused download.

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

       aria2.forcePause (pid)
           This method pauses the download denoted by gid. This method behaves just like
           aria2.pause except that this method pauses download without any action which takes
           time such as contacting BitTorrent tracker.

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

       aria2.unpause (gid)
           This method changes the status of the download denoted by gid from "paused" to
           "waiting". This makes the download eligible to restart. gid is of type string. This
           method returns GID of unpaused download.

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

       aria2.tellStatus (gid[, keys])
           This method returns download progress of the download denoted by gid. gid is of type
           string. keys is array of string. If it is specified, the response contains only keys
           in keys array. If keys is empty or not specified, the response contains all keys. This
           is useful when you just want specific keys and avoid unnecessary transfers. For
           example, aria2.tellStatus("1", ["gid", "status"]) returns gid and status key. The
           response is of type struct and it contains following keys. The value type is string.

           gid
               GID of this download.

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

           totalLength
               Total length of this download in bytes.

           completedLength
               Completed length of this download in bytes.

           uploadLength
               Uploaded length of this download in bytes.

           bitfield
               Hexadecimal representation of the download progress. The highest bit corresponds
               to piece index 0. The set bits indicate the piece is available and unset bits
               indicate the piece is missing. The spare bits at the end are set to zero. When
               download has not started yet, this key will not be included in the response.

           downloadSpeed
               Download speed of this download measured in bytes/sec.

           uploadSpeed
               Upload speed of this download measured in bytes/sec.

           infoHash
               InfoHash. BitTorrent only.

           numSeeders
               The number of seeders the client has connected to. BitTorrent only.

           pieceLength
               Piece length in bytes.

           numPieces
               The number of pieces.

           connections
               The number of peers/servers the client has connected to.

           errorCode
               The last error code occurred in this download. The value is of type string. The
               error codes are defined in EXIT STATUS section. This value is only available for
               stopped/completed downloads.

           followedBy
               List of GIDs which are generated by the consequence of this download. For example,
               when aria2 downloaded Metalink file, it generates downloads described in it(see
               --follow-metalink option). This value is useful to track these auto generated
               downloads. If there is no such 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 Metalink has BitTorrent resource, the download of .torrent
               is a part of that file. If this download has no parent, this key will not be
               included in the response.

           dir
               Directory to save files. This key is not available for stopped downloads.

           files
               Returns the list of files. The element of list is the same struct used in
               aria2.getFiles method.

           bittorrent
               Struct which contains information retrieved from .torrent file. BitTorrent only.
               It contains following keys.

               announceList
                   List of lists of announce URI. If .torrent file contains announce and no
                   announce-list, announce is converted to announce-list format.

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

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

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

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

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

           The following example gets information about download whose GID is "1":

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.tellStatus', 'params':['1']})
               >>> 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'1',
                            u'numPieces': u'34',
                            u'pieceLength': u'1048576',
                            u'status': u'active',
                            u'totalLength': u'34896138',
                            u'uploadLength': u'0',
                            u'uploadSpeed': u'0'}}

           The following example gets information specifying keys you are interested in:

               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.tellStatus',
               ...                       'params':['1', ['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'1',
                            u'totalLength': u'34896138'}}

           The following example gets information about download whose GID is "1":

               >>> import xmlrpclib
               >>> from pprint import pprint
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> r = s.aria2.tellStatus('1')
               >>> 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': '1',
                'numPieces': '17',
                'pieceLength': '2097152',
                'status': 'complete',
                'totalLength': '34896138',
                'uploadLength': '0',
                'uploadSpeed': '0'}

           The following example gets information specifying keys you are interested in:

               >>> r = s.aria2.tellStatus('1', ['gid', 'totalLength', 'completedLength'])
               >>> pprint(r)
               {'completedLength': '34896138', 'gid': '1', 'totalLength': '34896138'}

       aria2.getUris (gid)
           This method returns URIs used in the download denoted by gid. gid is of type string.
           The response is of type array and its element is of type struct and it contains
           following keys. The value type is string.

           uri
               URI

           status

               used if the URI is already used.  waiting if the URI is waiting in the queue.

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.getUris', 'params':['1']})
               >>> 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'}]}

               >>> import xmlrpclib
               >>> from pprint import pprint
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> r = s.aria2.getUris('1')
               >>> pprint(r)
               [{'status': 'used', 'uri': 'http://example.org/file'}]

       aria2.getFiles (gid)
           This method returns file list of the download denoted by gid. gid is of type string.
           The response is of type array and its element is of type struct and it contains
           following keys. The value type is string.

           index
               Index of file. Starting with 1. This is the same order with the files in
               multi-file torrent.

           path
               File path.

           length
               File size in bytes.

           completedLength
               Completed length of this file in bytes. Please note that it is possible that sum
               of completedLength is less than completedLength in aria2.tellStatus method. This
               is because completedLength in aria2.getFiles only calculates completed pieces. On
               the other hand, completedLength in aria2.tellStatus takes into account of
               partially completed piece.

           selected
               "true" if this file is selected by --select-file option. If --select-file is not
               specified or this is single torrent or no torrent download, this value is always
               "true". Otherwise "false".

           uris
               Returns the list of URI for this file. The element of list is the same struct used
               in aria2.getUris method.

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.getFiles', 'params':['1']})
               >>> 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'}]}]}

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

       aria2.getPeers (gid)
           This method returns peer list of the download denoted by gid. gid is of type string.
           This method is for BitTorrent only. The response is of type array and its element is
           of type struct and it contains following keys. The value type is string.

           peerId
               Percent-encoded peer ID.

           ip
               IP address of the peer.

           port
               Port number of the peer.

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

           amChoking
               "true" if this client is choking the peer. Otherwise "false".

           peerChoking
               "true" if the peer is choking this client. Otherwise "false".

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

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

           seeder
               "true" is this client is a seeder. Otherwise "false".

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.getPeers', 'params':['1']})
               >>> 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'}]}

               >>> import xmlrpclib
               >>> from pprint import pprint
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> r = s.aria2.getPeers('1')
               >>> pprint(r)
               [{'amChoking': 'true',
                 'bitfield': 'ffffffffffffffffffffffffffffffffffffffff',
                 'downloadSpeed': '10602',
                 'ip': '10.0.0.9',
                 'peerChoking': 'false',
                 'peerId': 'aria2%2F1%2E10%2E5%2D%87%2A%EDz%2F%F7%E6',
                 'port': '6881',
                 'seeder': 'true',
                 'uploadSpeed': '0'},
                {'amChoking': 'false',
                 'bitfield': 'ffffeff0fffffffbfffffff9fffffcfff7f4ffff',
                 'downloadSpeed': '8654',
                 'ip': '10.0.0.30',
                 'peerChoking': 'false',
                 'peerId': 'bittorrent client758',
                 'port': '37842',
                 'seeder': 'false,
                 'uploadSpeed': '6890'}]

       aria2.getServers (gid)
           This method returns currently connected HTTP(S)/FTP servers of the download denoted by
           gid. gid is of type string. The response is of type array and its element is of type
           struct and it contains following keys. The value type is string.

           index
               Index of file. Starting with 1. This is the same order with the files in
               multi-file torrent.

           servers
               The list of struct which contains following keys.

               uri
                   URI originally added.

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

               downloadSpeed
                   Download speed (byte/sec)

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.getServers', 'params':['1']})
               >>> 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'}]}]}

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

       aria2.tellActive ([keys])
           This method returns the list of active downloads. The response is of type array and
           its element is the same struct returned by aria2.tellStatus method. For keys
           parameter, please refer to aria2.tellStatus method.

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

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

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

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

           The response is of type array and its element is the same struct returned by
           aria2.tellStatus method.

       aria2.tellStopped (offset, num, [keys])
           This method returns the list of stopped download. offset is of type integer and
           specifies the offset from the oldest download. num is of type integer and specifies
           the number of downloads to be returned. For keys parameter, please refer to
           aria2.tellStatus method.

           offset and num have the same semantics as aria2.tellWaiting method.

           The response is of type array and its element is the same struct returned by
           aria2.tellStatus method.

       aria2.changePosition (gid, pos, how)
           This method changes the position of the download denoted by gid. pos is of type
           integer. how is of type string. If how is "POS_SET", it moves the download to a
           position relative to the beginning of the queue. If how is "POS_CUR", it moves the
           download to a position relative to the current position. If how is "POS_END", it moves
           the download to a position relative to the end of the queue. If the destination
           position is less than 0 or beyond the end of the queue, it moves the download to the
           beginning or the end of the queue respectively. The response is of type integer and it
           is the destination position.

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

           The following example moves the download whose GID is "3" to the front of the waiting
           queue:

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.changePosition',
               ...                       'params':['3', 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}

           The following example moves the download whose GID is "3" to the front of the waiting
           queue:

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.changePosition('3', 0, 'POS_SET')
               0

       aria2.changeUri (gid, fileIndex, delUris, addUris[, position])
           This method removes URIs in delUris from and appends URIs in addUris to download
           denoted by gid. delUris and addUris are list of string. A download can contain
           multiple files and URIs are attached to each file. fileIndex is used to select which
           file to remove/attach given URIs. fileIndex is 1-based. position is used to specify
           where URIs are inserted in the existing waiting URI list. position is 0-based. When
           position is omitted, URIs are appended to the back of the list. This method first
           execute removal and then addition. position is the position after URIs are removed,
           not the position when this method is called. When removing URI, if same URIs exist in
           download, only one of them is removed for each URI in delUris. In other words, there
           are three URIs "http://example.org/aria2" and you want remove them all, you have to
           specify (at least) 3 "http://example.org/aria2" in delUris. This method returns a list
           which contains 2 integers. The first integer is the number of URIs deleted. The second
           integer is the number of URIs added.

           The following example adds 1 URI http://example.org/file to the file whose index is
           "1" and belongs to the download whose GID is "2":

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.changeUri',
               ...                       'params':['2', 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]}

           The following example adds 1 URI http://example.org/file to the file whose index is
           "1" and belongs to the download whose GID is "2":

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.changeUri('2', 1, [], ['http://example.org/file'])
               [0, 1]

       aria2.getOption (gid)
           This method returns options of the download denoted by gid. The response is of type
           struct. Its key is the name of option. The value type is string.

           The following example gets options of the download whose GID is "1":

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.getOption', 'params':['1']})
               >>> 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',
                ...

           The following example gets options of the download whose GID is "1":

               >>> import xmlrpclib
               >>> from pprint import pprint
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> r = s.aria2.getOption('1')
               >>> pprint(r)
               {'allow-overwrite': 'false',
                'allow-piece-length-change': 'false',
                'always-resume': 'true',
                'async-dns': 'true',
                ....

       aria2.changeOption (gid, options)
           This method changes options of the download denoted by gid dynamically. gid is of type
           string. options is of type struct and the available options are: bt-max-peers,
           bt-request-peer-speed-limit, max-download-limit and max-upload-limit. This method
           returns "OK" for success.

           The following example sets max-download-limit option to "20K" for the download whose
           GID is "1".

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.changeOption',
               ...                       'params':['1', {'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'}

           The following example sets max-download-limit option to "20K" for the download whose
           GID is "1".

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.changeOption('1', {'max-download-limit':'20K'})
               'OK'

       aria2.getGlobalOption ()
           This method returns global options. The response is of type struct. Its key is the
           name of option. The value type is string. Because global options are used as a
           template for the options of newly added download, the response contains keys returned
           by aria2.getOption method.

       aria2.changeGlobalOption (options)
           This method changes global options dynamically. options is of type struct and the
           available options are max-concurrent-downloads, max-overall-download-limit,
           max-overall-upload-limit, log-level and log. Using log option, you can dynamically
           start logging or change log file. To stop logging, give empty string("") as a
           parameter value. Note that log file is always opened in append mode. This method
           returns "OK" for success.

       aria2.getGlobalStat ()
           This method returns global statistics such as overall download and upload speed. The
           response is of type struct and contains following keys. The value type is string.

           downloadSpeed
               Overall download speed (byte/sec).

           uploadSpeed
               Overall upload speed(byte/sec).

           numActive
               The number of active downloads.

           numWaiting
               The number of waiting downloads.

           numStopped
               The number of stopped downloads.

               >>> 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'}}

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

       aria2.purgeDownloadResult ()
           This method purges completed/error/removed downloads to free memory. This method
           returns "OK".

       aria2.removeDownloadResult (gid)
           This method removes completed/error/removed download denoted by gid from memory. This
           method returns "OK" for success.

           The following example removes the download result of the download whose GID is "1".

               >>> import urllib2, json
               >>> from pprint import pprint
               >>> jsonreq = json.dumps({'jsonrpc':'2.0', 'id':'qwer',
               ...                       'method':'aria2.removeDownloadResult',
               ...                       'params':['1']})
               >>> 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'}

           The following example removes the download result of the download whose GID is "1".

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.removeDownloadResult('1')
               'OK'

       aria2.getVersion ()
           This method returns version of the program and the list of enabled features. The
           response is of type struct and contains following keys.

           version
               Version number of the program in string.

           enabledFeatures
               List of enabled features. Each feature name is of type string.

               >>> 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'}}

               >>> import xmlrpclib
               >>> from pprint import pprint
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> r = s.aria2.getVersion()
               >>> pprint(r)
               {'enabledFeatures': ['Async DNS',
                                    'BitTorrent',
                                    'Firefox3 Cookie',
                                    'GZip',
                                    'HTTPS',
                                    'Message Digest',
                                    'Metalink',
                                    'XML-RPC'],
                'version': '1.11.0'}

       aria2.getSessionInfo ()
           This method returns session information. The response is of type struct and contains
           following key.

           sessionId
               Session ID, which is generated each time when aria2 is invoked.

               >>> 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'}}

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> s.aria2.getSessionInfo()
               {'sessionId': 'cd6a3bc6a1de28eb5bfa181e5f6b916d44af31a9'}

       aria2.shutdown ()
           This method shutdowns aria2. This method returns "OK".

       aria2.forceShutdown ()
           This method shutdowns aria2. This method behaves like aria2.shutdown except that any
           actions which takes time such as contacting BitTorrent tracker are skipped. This
           method returns "OK".

       system.multicall (methods)
           This methods encapsulates multiple method calls in a single request. methods is of
           type array and its element is struct. The struct contains two keys: "methodName" and
           "params". "methodName" is the method name to call and "params" is array containing
           parameters to the method. This method returns array of responses. The element of array
           will either be a one-item array containing the return value of each method call or
           struct of fault element if an encapsulated method call fails.

           In the following example, we add 2 downloads. First one is http://example.org/file and
           second one is file.torrent:

               >>> 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'1'], [u'2']]}

           JSON-RPC also supports Batch request described in JSON-RPC 2.0 Specification:

               >>> jsonreq = json.dumps([{'jsonrpc':'2.0', 'id':'qwer',
               ...                        'method':'aria2.addUri',
               ...                        'params':[['http://example.org']]},
               ...                       {'jsonrpc':'2.0', 'id':'asdf',
               ...                        'method':'aria2.addTorrent',
               ...                        'params':[base64.b64encode(open('file.torrent').read())]}])
               >>> c = urllib2.urlopen('http://localhost:6800/jsonrpc', jsonreq)
               >>> pprint(json.loads(c.read()))
               [{u'id': u'qwer', u'jsonrpc': u'2.0', u'result': u'1'},
                {u'id': u'asdf', u'jsonrpc': u'2.0', u'result': u'2'}]

           In the following example, we add 2 downloads. First one is http://example.org/file and
           second one is file.torrent:

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> mc = xmlrpclib.MultiCall(s)
               >>> mc.aria2.addUri(['http://example.org/file'])
               >>> mc.aria2.addTorrent(xmlrpclib.Binary(open('file.torrent').read()))
               >>> r = mc()
               >>> tuple(r)
               ('2', '3')

   Error Handling
       In JSON-RPC, aria2 returns JSON object which contains error code in code and the error
       message in message.

       In XML-RPC, aria2 returns faultCode=1 and the error message in faultString.

   Options
       Same options for -i list are available. See Input File subsection for complete list of
       options.

       In the option struct, name element is option name(without preceding "--") and value
       element is argument as string.

       JSON-RPC Example
               {'split':'1', 'http-proxy':'http://proxy/'}

       XML-RPC Example
               <struct>
                 <member>
                   <name>split</name>
                   <value><string>1</string></value>
                 </member>
                 <member>
                   <name>http-proxy</name>
                   <value><string>http://proxy/</string></value>
                 </member>
               </struct>

           header and index-out option are allowed multiple times in command-line. Since name
           should be unique in struct(many XML-RPC library implementation uses hash or dict for
           struct), single string is not enough. To overcome this situation, they can take array
           as value as well as string.

       JSON-RPC Example
               {'header':['Accept-Language: ja', 'Accept-Charset: utf-8']}

       XML-RPC Example
               <struct>
                 <member>
                   <name>header</name>
                   <value>
                     <array>
                       <data>
                         <value><string>Accept-Language: ja</string></value>
                         <value><string>Accept-Charset: utf-8</string></value>
                       </data>
                     </array>
                   </value>
                 </member>
               </struct>

           Following example adds a download with 2 options: dir and header. header option has 2
           values, so it uses a list:

               >>> import xmlrpclib
               >>> s = xmlrpclib.ServerProxy('http://localhost:6800/rpc')
               >>> opts = dict(dir='/tmp',
               ...             header=['Accept-Language: ja',
               ...                     'Accept-Charset: utf-8'])
               >>> s.aria2.addUri(['http://example.org/file'], opts)
               '1'

   JSON-RPC using HTTP GET
       The JSON-RPC interface also supports request via HTTP GET. The encoding scheme in GET
       parameters is based on JSON-RPC over HTTP Specification (2008-1-15(RC1)). The encoding of
       GET parameters are follows:

           /jsonrpc?method=METHOD_NAME&id=ID&params=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(3) with id=foo looks like this:

           /jsonrpc?method=aria2.tellStatus&id=foo&params=WyIzIl0%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 [3], therefore:

           ['3'] --(Base64)--> WyIzIl0= --(Percent Encode)--> WyIzIl0%3D

       The JSON-RPC interface supports JSONP. You can specify the callback function in
       jsoncallback parameter.

           /jsonrpc?method=aria2.tellStatus&id=foo&params=WyIzIl0%3D&jsoncallback=cb

       For Batch request, method and id parameter must not be specified. Whole request must be
       specified in params parameter. For example, Batch request

           [{'jsonrpc':'2.0', 'id':'qwer', 'method':'aria2.getVersion'},
            {'jsonrpc':'2.0', 'id':'asdf', 'method':'aria2.tellActive'}]

       will be encoded like this:

           /jsonrpc?params=W3sianNvbnJwYyI6ICIyLjAiLCAiaWQiOiAicXdlciIsICJtZXRob2QiOiAiYXJpYTIuZ2V0VmVyc2lvbiJ9LCB7Impzb25ycGMiOiAiMi4wIiwgImlkIjogImFzZGYiLCAibWV0aG9kIjogImFyaWEyLnRlbGxBY3RpdmUifV0%3D

   Sample XML-RPC Client Code
       The following Ruby script adds http://localhost/aria2.tar.bz2 to aria2c operated on
       localhost with option --dir=/downloads and prints its reponse.

           #!/usr/bin/env ruby

           require 'xmlrpc/client'
           require 'pp'

           client=XMLRPC::Client.new2("http://localhost:6800/rpc")

           options={ "dir" => "/downloads" }
           result=client.call("aria2.addUri", [ "http://localhost/aria2.tar.bz2" ], options)

           pp result

       If you are a Python lover, you can use xmlrpclib(for Python3.x, use xmlrpc.client instead)
       to interact with aria2.

           import xmlrpclib
           from pprint import pprint

           s = xmlrpclib.ServerProxy("http://localhost:6800/rpc")
           r = s.aria2.addUri(["http://localhost/aria2.tar.bz2"], {"dir":"/downloads"})
           pprint(r)

EXAMPLE

   HTTP/FTP Segmented Download
       Download a file
               aria2c "http://host/file.zip"

               Note
               To stop a download, press Ctrl-C. You can resume the transfer by running aria2c
               with the same argument in the same directory. You can change URIs as long as they
               are pointing to the same file.

       Download a file from 2 different HTTP servers
               aria2c "http://host/file.zip" "http://mirror/file.zip"

       Download a file from 1 host using 2 connections
               aria2c -x2 -k1M "http://host/file.zip"

       Download a file from HTTP and FTP servers
               aria2c "http://host1/file.zip" "ftp://host2/file.zip"

       Download files listed in a text file concurrently
               aria2c -ifiles.txt -j2

               Note
               -j option specifies the number of parallel downloads.

       Using proxy
           For HTTP:

               aria2c --http-proxy="http://proxy:8080" "http://host/file"

               aria2c --http-proxy="http://proxy:8080" --no-proxy="localhost,127.0.0.1,192.168.0.0/16" "http://host/file"

           For FTP:

               aria2c --ftp-proxy="http://proxy:8080" "ftp://host/file"

               Note
               See --http-proxy, --https-proxy, --ftp-proxy, --all-proxy and --no-proxy for
               details. You can specify proxy in the environment variables. See ENVIRONMENT
               section.

       Proxy with authorization
               aria2c --http-proxy="http://username:password@proxy:8080" "http://host/file"

               aria2c --http-proxy="http://proxy:8080" --http-proxy-user="username" --http-proxy-passwd="password" "http://host/file"

   Metalink Download
       Download files with remote Metalink
               aria2c --follow-metalink=mem "http://host/file.metalink"

       Download using a local metalink file
               aria2c -p --lowest-speed-limit=4000 file.metalink

               Note
               To stop a download, press Ctrl-C. You can resume the transfer by running aria2c
               with the same argument in the same directory.

       Download several local metalink files
               aria2c -j2 file1.metalink file2.metalink

       Download only selected files using index
               aria2c --select-file=1-4,8 file.metalink

               Note
               The index is printed to the console using -S option.

       Download a file using a local .metalink file with user preference
               aria2c --metalink-location=jp,us --metalink-version=1.1 --metalink-language=en-US file.metalink

   BitTorrent Download
       Download files from remote BitTorrent file
               aria2c --follow-torrent=mem "http://host/file.torrent"

       Download using a local torrent file
               aria2c --max-upload-limit=40K file.torrent

               Note
               --max-upload-limit specifies the max of upload rate.

               Note
               To stop a download, press Ctrl-C. You can resume the transfer by running aria2c
               with the same argument in the same directory.

       Download using BitTorrent Magnet URI
               aria2c "magnet:?xt=urn:btih:248D0A1CD08284299DE78D5C1ED359BB46717D8C&dn=aria2"

               Note
               Don’t forget to quote BitTorrent Magnet URI which includes "&" character with
               single(') or double(") quotation.

       Download 2 torrents
               aria2c -j2 file1.torrent file2.torrent

       Download a file using torrent and HTTP/FTP server
               aria2c -Ttest.torrent "http://host1/file" "ftp://host2/file"

               Note
               Downloading multi file torrent with HTTP/FTP is not supported.

       Download only selected files using index(usually called "selectable download")
               aria2c --select-file=1-4,8 file.torrent

               Note
               The index is printed to the console using -S option.

       Specify output filename
           To specify output filename for BitTorrent downloads, you need to know the index of
           file in torrent file using -S option. 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 port for incoming peer
               aria2c --listen-port=7000-7001,8000 file.torrent

               Note
               Since aria2 doesn’t configure firewall or router for port forwarding, it’s up to
               you to do it manually.

       Specify the condition to stop program after torrent download finished
               aria2c --seed-time=120 --seed-ratio=1.0 file.torrent

               Note
               In the above example, the program exits when the 120 minutes has elapsed since
               download completed or seed ratio reaches 1.0.

       Throttle upload speed
               aria2c --max-upload-limit=100K file.torrent

       Enable IPv4 DHT
               aria2c --enable-dht --dht-listen-port=6881 file.torrent

               Note
               DHT uses udp port. Since aria2 doesn’t configure firewall or router for port
               forwarding, it’s up to you to do it manually.

       Enable IPv6 DHT
               aria2c --enable-dht6 --dht-listen-port=6881 --dht-listen-addr6=YOUR_GLOBAL_UNICAST_IPV6_ADDR --enable-async-dns6

               Note
               If aria2c is not built with c-ares, --enable-async-dns6 is unnecessary. aria2
               shares same port between IPv4 and IPv6 DHT.

       Add and remove tracker URI
           Removes all tracker announce URIs described in file.torrent and use
           "http://tracker1/announce" and "http://tracker2/announce" instead.

               aria2c --bt-exclude-tracker="*" --bt-tracker="http://tracker1/announce,http://tracker2/announce" file.torrent

   More advanced HTTP features
       Load cookies
               aria2c --load-cookies=cookies.txt "http://host/file.zip"

               Note
               You can use Firefox/Mozilla/Chromium’s cookie file without modification.

       Resume download started by web browsers or another programs
               aria2c -c -s2 "http://host/partiallydownloadedfile.zip"

       Client certificate authorization for SSL/TLS
               aria2c --certificate=/path/to/mycert.pem --private-key=/path/to/mykey.pem https://host/file

               Note
               The file specified in --private-key must be decrypted. The behavior when encrypted
               one is given is undefined.

       Verify peer in SSL/TLS using given CA certificates
               aria2c --ca-certificate=/path/to/ca-certificates.crt --check-certificate https://host/file

   And more advanced features
       Throttle download speed
               aria2c --max-download-limit=100K file.metalink

       Repair a damaged download
               aria2c -V file.metalink

               Note
               Repairing damaged downloads can be done efficiently when used with BitTorrent or
               Metalink with chunk checksums.

       Drop connection if download speed is lower than specified value
               aria2c --lowest-speed-limit=10K file.metalink

       Parameterized URI support
           You can specify set of parts:

               aria2c -P "http://{host1,host2,host3}/file.iso"

           You can specify numeric sequence:

               aria2c -Z -P "http://host/image[000-100].png"

               Note
               -Z option is required if the all URIs don’t point to the same file, such as the
               above example.

           You can specify step counter:

               aria2c -Z -P "http://host/image[A-Z:2].png"

       Verify checksum
               aria2c --checksum=sha-1=0192ba11326fe2298c8cb4de616f4d4140213837 http://example.org/file

       Parallel downloads of arbitrary number of URI,metalink,torrent
               aria2c -j3 -Z "http://host/file1" file2.torrent file3.metalink

       BitTorrent Encryption
           Encrypt whole payload using ARC4:

               aria2c --bt-min-crypto-level=arc4 --bt-require-crypto=true file.torrent

SEE ALSO

       Project Web Site: http://aria2.sourceforge.net/

       aria2 Wiki: http://sourceforge.net/apps/trac/aria2/wiki

       Metalink Homepage: http://www.metalinker.org/

       The Metalink Download Description Format: http://tools.ietf.org/html/rfc5854

COPYRIGHT

       Copyright © 2006, 2011 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 MERCHANTABILITY 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 permission 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.

AUTHOR

       Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>
           Author.