libasyncns 0.8

   Copyright 2005-2009 Lennart Poettering 

   de>

     * [1]License

     * [2]News

     * [3]Overview

     * [4]Current Status

     * [5]Documentation

     * [6]Requirements

     * [7]Installation

     * [8]Acknowledgements

     * [9]Download

License

   This program is free software; you can redistribute it and/or modify it

   under the terms of the GNU Lesser General Public License as published

   by the Free Software Foundation, either version 2.1 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 Lesser

   General Public License for more details.

News

   Thu 15 Oct 2009:

   [10]Version 0.8 released; changes include: various smaller fixes.

   Tue 28 Oct 2008:

   [11]Version 0.7 released; changes include: rework thread shutdown

   logic.

   Fri 24 Oct 2008:

   [12]Version 0.6 released; changes include: save and restore h_errno in

   addition to errno; drop usage of pthread's cancelling since it is

   problematic on some platforms.

   Sun 17 Aug 2008:

   [13]Version 0.5 released; changes include: fix getaddrinfo()

   serialization.

   Sun 27 Jul 2008:

   [14]Version 0.4 released; changes include: rework error handling logic,

   add asyncns_freeanswer(), a lot of fixes

   Wed 23 May 2007:

   [15]Version 0.3 released; changes include: build fixes: properly detect

   res_query() on Linux/AMD64, support older autoconf versions

   Fri 16 Feb 2007:

   [16]Version 0.2 released; changes include: res_query() support; minor

   bug fixes; doc updates

   Sat 8 Jan 2005:

   [17]Version 0.1 released

Overview

   libasyncns is a C library for Linux/Unix for executing name service

   queries asynchronously. It is an asynchronous wrapper around

   getaddrinfo(3), getnameinfo(3), res_query(3) and res_search(3) from

   libc and libresolv.

   In contrast to GNU's asynchronous name resolving API getaddrinfo_a(),

   libasyncns does not make use of UNIX signals for reporting completion

   of name queries. Instead, the API exports a standard UNIX file

   descriptor which may be integerated cleanly into custom main loops.

   In contrast to asynchronous DNS resolving libraries like [18]libdenise,

   [19]skadns, [20]adns, libasyncns is just an asynchronous wrapper around

   the libc's synchronous getaddrinfo() API, which has the advantage of

   allowing name resolution using techniques like [21]Multicast DNS, LDAP

   or NIS using standard libc NSS (Name Service Switch) modules.

   libasyncns is compatible with IPv6 if the underlying libc is.

   libasyncns is very tiny, consisting of just one header and one source

   file. It has no dependencies besides libc.

   By default libasyncns spawns a number of worker threads (LWPs) to

   process name queries. Alternatively or when POSIX Threads are not

   supported, libasyncns can fork() off worker processes instead.

Current Status

   Version 0.8 is quite stable and feature complete.

   Damien Thébault has written a Python module [22]libasyncns-python that

   wraps the libasyncns C API.

Documentation

   You may browse the [23]Doxygen generated [24]programing documentation

   the API. (Run make doxygen to generate this documentation from the

   source tree)

Requirements

   Currently, libasyncns is tested on Linux and Solaris

   (sparc-sun-solaris2.8) only.

   libasyncns was developed and tested on Debian GNU/Linux "testing" from

   January 2005, it should work on most other Linux distributions (and

   maybe Unix versions) since it uses GNU autoconf and GNU libtool for

   source code configuration and shared library management.

   libasyncns has no dependencies besides a libc that supports

   getaddrinfo() and res_query().

Installation

   As this package is made with the GNU autotools you should run

   ./configure inside the distribution directory for configuring the

   source tree. After that you should run make for compilation and make

   install (as root) for installation of libasyncns.

Acknowledgements

   Sjoerd Simons for the res_query() support.

Download

   The newest release is always available from

   [25]http://0pointer.de/lennart/projects/libasyncns/

   The current release is [26]0.8

   Get libasyncns's development sources from the [27]GIT [28]repository

   ([29]gitweb):

git clone git://git.0pointer.de/libasyncns

   You may find an up to date Debian package of libasyncns on the

   [30]Debian package repository.

   If you want to be notified whenever I release a new version of this

   software use the subscription feature of [31]Freshmeat.

     __________________________________________________________________

    Lennart Poettering <mznflapaf (at) 0pointer (dot) de>, October 2009

References

   1. README#license

   2. README#news

   3. README#overview

   4. README#status

   5. README#documentation

   6. README#requirements

   7. README#installation

   8. README#acks

   9. README#download

  10. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.8.tar.gz

  11. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.7.tar.gz

  12. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.6.tar.gz

  13. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.5.tar.gz

  14. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.4.tar.gz

  15. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.3.tar.gz

  16. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.2.tar.gz

  17. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.1.tar.gz

  18. http://libdenise.sourceforge.net/

  19. http://www.skarnet.org/software/skadns/

  20. http://www.chiark.greenend.org.uk/~ian/adns/

  21. http://0pointer.de/lennart/projects/nss-mdns/

  22. https://launchpad.net/libasyncns-python

  23. http://www.doxygen.org/

  24. http://0pointer.de/lennart/projects/libasyncns/doxygen/

  25. http://0pointer.de/lennart/projects/libasyncns/

  26. http://0pointer.de/lennart/projects/libasyncns/libasyncns-0.8.tar.gz

  27. http://git.or.cz/

  28. git://git.0pointer.de/libasyncns

  29. http://git.0pointer.de/?p=libasyncns.git

  30. http://packages.debian.org/libasyncns0

  31. http://freshmeat.net/projects/libasyncns/