aria2

This program comes with no warranty. You must use this program at your own risk. aria2 is a utility for downloading files. The supported protocols are HTTP(S), FTP, SFTP, BitTorrent, and Metalink. aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. It supports downloading a file from HTTP(S)/FTP/SFTP and BitTorrent at the same time, while the data downloaded from HTTP(S)/FTP/SFTP is uploaded to the BitTorrent swarm. Using Metalink's chunk checksums, aria2 automatically validates chunks of data while downloading a file like BitTorrent. We use 3 numbers for the aria2 version: MAJOR.MINOR.PATCH. We will ship MINOR updates on the 15th of every month. We may skip a release if we have had no changes since the last release. The feature and documentation freeze happens 10 days before the release day (the 5th day of the month) for translation teams. We will raise an issue about the upcoming release around that day. We may release PATCH releases between regular releases if we have security issues. This will create an aria2 directory in your current directory and source files are stored there. libxml2 has precedence over Expat if both libraries are installed. If you prefer Expat, run configure with --without-libxml2 . On Apple OSX, OS-level SSL/TLS support will be preferred. Hence neither GnuTLS nor OpenSSL is required on that platform. If you'd like to disable this behavior, run configure with --without-appletls . GnuTLS has precedence over OpenSSL if both libraries are installed. If you prefer OpenSSL, run configure with --without-gnutls --with-openssl . On Windows, there is SSL implementation available that is based on the native Windows SSL capabilities (Schannel) and it will be preferred. Hence neither GnuTLS nor OpenSSL is required on that platform. If you'd like to disable this behavior, run configure with --without-wintls . On Apple OSX, the OS-level checksum support will be preferred, unless aria2 is configured with --without-appletls . libnettle has precedence over libgcrypt if both libraries are installed. If you prefer libgcrypt, run configure with --without-libnettle --with-libgcrypt . If OpenSSL is selected over GnuTLS, neither libnettle nor libgcrypt will be used. If none of the optional dependencies are installed, an internal implementation that only supports md5 and sha1 will be used. You can disable BitTorrent and Metalink support by providing --disable-bittorrent and --disable-metalink to the configure script respectively. aria2 is primarily written in C++. Initially, it was written based on C++98/C++03 standard features. We are now migrating aria2 to the C++11 standard. The current source code requires a C++11 aware compiler. For well-known compilers, such as g++ and clang, the -std=c++11 or -std=c++0x flag must be supported. See Cross-compiling Windows binary to create a Windows binary. See Cross-compiling Android binary to create an Android binary. The configure script checks available libraries and enables as many features as possible except for experimental features not enabled by default. Since 1.1.0, aria2 checks the certificate of HTTPS servers by default. If you build with OpenSSL or the recent version of GnuTLS which has gnutls certificate set x509 system trust() function and the library is properly configured to locate the system-wide CA certificates store, aria2 will automatically load those certificates at the startup. If it is not the case, I recommend supplying the path to the CA bundle file. For example, in Debian the path to CA bundle file is '/etc/ssl/certs/ca-certificates.crt' (in ca-certificates package). This may vary depending on your distribution. You can give it to configure script using --with-ca-bundle option :: Without --with-ca-bundle option, you will encounter the error when accessing HTTPS servers because the certificate cannot be verified without the CA bundle. In such a case, you can specify the CA bundle file u