<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" id="tech-avahi" xml:lang="zh-CN">

  <info>

    <link type="guide" xref="tech" group="avahi"/>

    <credit type="author copyright">

      <name>Federico Mena Quintero</name>

      <email its:translate="no">federico@gnome.org</email>

      <years>2013</years>

    </credit>

    <include xmlns="http://www.w3.org/2001/XInclude" href="cc-by-sa-3-0.xml"/>

    <desc>Zeroconf service discovery on local networks</desc>

  </info>

<title>Avahi</title>

  
Avahi implements <link href="http://www.zeroconf.org/">Zeroconf</link>

  Networking. It allows programs to discover services like printers on local

  networks without prior configuration. It also allows applications to set up

  services that are reachable through the local network without configuration;

  for example, a chat program that "finds" other chat users in a LAN without

  having to set up a central chat server first.

  
Avahi is an implementation of the <link href="http://www.dns-sd.org/">DNS

  Service Discovery</link> and

  <link href="http://www.multicastdns.org/">Multicast DNS</link>

  specifications, which are part of

  <link href="http://www.zeroconf.org/">Zeroconf</link> Networking.

  
Various programs in GNOME use Avahi to discover services. Gnome-user-share

  (a module for the Nautilus file manager) lets users of a local network to

  share files with each other, and it finds computers that are sharing files

  via Avahi. Vino, a remote-desktop viewer, uses Avahi to find remote desktop

  servers. <link xref="tech-pulseaudio">PulseAudio</link>, GNOME's low-level

  audio API, uses Avahi to make it possible to route sound through local

  networks.

  <list style="compact">

    <item>
<link href="http://avahi.org/wiki/ProgrammingDocs">Avahi reference documentation</link>
</item>

  </list>

</page>