aria2 に似たアプリケーションはいくつか存在しますが、以下の 2 点 において aria2 は差別化されます: (1) 複数のソース (http/ftp そして BitTorrent) からダウンロードで きる。 (2) aria2 に URL のリストを与えた場合、それらを一つ一つ逐次的にダウンロー ドするのではなく、複数並列でダウンロードすることができます。一つ ずつダウンロードを待つ必要はないのです。これにより aria2 は与え られた帯域をめいいっぱい使用して高速なダウンロードを実現します。
ファイルをHTTP(S)/FTPとBitTorrentの両方から同時にダウンロードする機能を持っています。HTTP(S)/FTPからダウンロードしたデータは、BitTorrentネットワークにアップロードされます.
信頼性 という意味でもっともすぐれたHTTP(S)/FTPダウンロードユーティリティ です。なぜなら、Metalink のチャンクチェックサムをサポートしており、 BitTorrentのようにダウンロードした部分部分のチェックサムを照合す る機能をもつからです。チェックサムが違っていればその部分だけダウ ンロードすればよいのです。従来のようなファイルをすべてダウンロード してからチェックサムをとり、間違っていれば全部ダウンロードしなおすことと較べてください。 その差はファイルサイズが大きくなるにつれて明らかです。
This release adds large file support for Android build and libuv support for event polling mechanism. AppleTLS now supports Snow Leopard (10.6). The experimental libaria2 C++ library API was added.
* Add code to detect rst2html.py or rst2html
* AppleTLS: Properly support Snow Leopard (10.6)
Tested on 10.6.8 + XCode 4.2 (llvm-gcc-4.2, clang)
Contributed by Nils Maier
* Enable multicast loopback in BitTorrent local peer discovery
* Enable TLS1.1 with gnutls build
* Support off64_t for Android build
Android NDK R8e does not provide ftruncate64, but bionic has the
assembler code to access kernel function. We borrowed those
ftruncate64.S files from android source code repository. It turns
out that x86 asm.h in NDK R8e is also broken, so latest asm.h was
also borrowed.
* Check zlib availability usin AC_CHECK_LIB
This is workaround for zlib 1.2.3 which does not come with
pkg-config file.
* Treat response is completed if EOF is received before streamFilter
completes
This fixes the error with web server which has buggy chunked
encoding.
* uitos: Fix off-by-one error bug
* Add configure support for linking tcmalloc_minimal and/or jemalloc
Both tcmalloc_minimal and jemalloc outperform the native malloc
implemention on Windows (MSVCRT) in terms of committed memory
consumption (~-30%) and performance (e.g. far less page faults,
~-60%), depending, of course, on the actual workload. The longer
the download queue, the bigger the impact ;)
On *nix the picture is a little different... tcmalloc usually still
outperforms the native malloc implementation, but not that
significantly than on Windows. jemalloc however is only marginally
better than recent native Linux implementations, while it is already
used by some BSD as the native allocator.
tcmalloc is part of gperftools and very mature and tested by now. It
doesn't work on OSX in the default configuration, however.
http://code.google.com/p/gperftools/
jemalloc is the default allocator at least on FreeBSD and NetBSD and
used in Firefox. http://www.canonware.com/jemalloc/index.html
Contributed by Nils Maier
* Close GZipFiles in the d'tor
Contributed by Nils Maier
* Add libaria2, C++ library interface to aria2
The libaria2 is a C++ library and offers the core functionality of
aria2. The library takes care of all networking and downloading
stuff, so its usage is very straight forward right now. See
libaria2ex.cc in examples directory to see how to use API. By
default, libaria2 is not built. See libaria2 section in README to
how to enable it.
The APIs in this release is considered experimental.
* Add missing check for sigaction
* Fix cached data is not flushed when downloaded data is less than
16KiB
* LibUV: Implement LibuvEventPoll
LibUV event will use the best available polling method on a system,
kind of like aria2 does already with the different *EventPoll
implementations. However, libuv may support different/newer polling
mechanisms; for example on Windows it will use IO Completion Ports
which are superior to select() ;)
Contributed by Nils Maier
