aria2 0.16.0

aria2 is a utility for downloading files. The supported protocols are http(s)/ftp/BitTorrent/Metalink.
aria2 has powerful segmented downloading ability, downloading a file from multiple sources and multiple protocols, utilizing your download bandwidth to the max.
aria2 even supports downloading a file from http/ftp and BitTorrent at the same time, while the data downloaded from http/ftp is uploaded to BitTorrent swarm.
aria2 also provides most reliable http/ftp downloading experience ever. Using Metalinks chunk checksums, aria2 automatically validates chunk of data while downloading like BitTorrent.
aria2 has segmented downloading engine in its core. It can download one file from multiple URLs or multiple connections from one URL. This results in very high download speeds, much faster than ordinary browsers.

Main features:>
- Command-line interface
- Download files through HTTP/HTTPS/FTP/BitTorrent
- HTTP Proxy support
- FTP through HTTP Proxy
- HTTP BASIC authentication support
- HTTP Proxy authentication support
- Segmented downloading
- Download speed throttling
- Upload speed throttling in BitTorrent
- Cookie support
- Load Cookies from file whose format is one used by Netscape and Mozilla.
- Run as a daemon process.
- Selective download in multi-file torrent/metalink
- BitTorrent Fast extension support
- Multi-tracker support
- Metalink version 3.0 support(HTTP/FTP/BitTorrent)
- Chunk checksum validation in Metalink
- Can disable segmented downloading in Metalink
- netrc support
- Configuration file support
- Download URIs found in a text file or stdin
- Parameterized URI support

Enhancements:
- Added deliminating text to the beginning of the log so that one can find where the log starts easily.
- Use non-blocking socket for TCP communication to avoid possible blocking due to buffer full.
- Added --max-file-not-found=NUM option. If aria2 receives `file not found error from HTTP/FTP server NUM times without getting single bytes of data, then force the download to fail.
- Use pkg-config for sqlite3, openssl.
- Added --connect-timeout option to specify connect timeout in seconds. This option is in effect for HTTP/FTP/proxy server. The timeout for connecting to BitTorrent peer is not controlled by this option.
- Implemented the ability to get timestamp from remote HTTP/FTP server and apply it to local file. To enable this feature, --remote-time option.
- If an error occurred with a URI, remove identical URI from remaining URI list because it is likely that same error occurred in the end and it is waste of time.
- Contact tracker frequently when the number of connections are 0 and download is not finished yet.
- Rewritten Cookie handling routine.
- Bump up version number of dht.dat file to 3. In version 3 format, time is stored in 64bit, network byte order. New build can load old format(version 2) but it saves the file in new format. It means once you used new build, your dht.dat becomes incompatible with older build.
- Bump up version number of .aria2 control file to 0001. New aria2 can still load version 0000 file but it saves the file in version 0001 format. It means that new aria2 can resume download started by old aria2 but the opposite is not true.
- Added Firefox3 cookie support based on the patch submitted by tizianomueller. Firefox3 cookie is SQLite3 database. libsqlite3 is required to enable this functionality.
- Implemented download speed based URI selection algorithm. Introduced new option --uri-selector. If --uri-selector=feedback is given, aria2 uses download speed observed in the previous downloads and chooses fastest server in the URI list. Currently at most 10 URIs are considered to introduce randomeness for finding better servers. The speed is average download speed in the downloads. On the other hand, if --uri-selector=inorder is given, which is default, URI is tried in order in URI list. Added options to load/save above information(download speed, status etc.) to a file: --server-stat-of, --server-stat-if. --server-stat-timeout is also added to control the life span of the saved data.
- Integrated HelpItem into OptionParser to ease the workload for adding new options. Removed default value from usage text.
- Issue PWD command first and get working directory and use it as a prefix for CWD command.
- netrc are used for HTTP.
- FTP user/password is sent in Authorization header when --ftp-via-http-proxy=get is given(non-transparent HTTP proxy).
- Insert username+@ to URI(after ftp://) when URI is FTP scheme and username is not in URI and non-transparent HTTP proxy is used.
- Fixed the bug that prefixLength of split bucket which doesnt include local node ID is incremented.
- Updated man page.