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<img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/inets-5.9.2.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>inets</strong><br><strong>User's Guide</strong><br><small>Version 5.9.2</small></p>
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<li id="loadscrollpos" title="Introduction" expanded="true">Introduction<ul>
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<li title="Prerequisites"><a href="inets_services.html#id63179">Prerequisites</a></li>
<li title="The Service Concept"><a href="inets_services.html#id59584">The Service Concept</a></li>
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<h1>1 Introduction</h1>
<h3><a name="id57726">1.1
Purpose</a></h3>
<p>Inets is a container for Internet clients and
servers. Currently, an HTTPclient and server, a
TFPT client and server, and a FTP client has been incorporated
into Inets. The HTTP server and client is HTTP 1.1 compliant as
defined in RFC2616.</p>
<h3><a name="id63179">1.2
Prerequisites</a></h3>
<p>It is assumed that the reader is familiar with the Erlang
programming language, concepts of OTP and has a basic
understanding of the HTTP, TFTP and FTP protocols.</p>
<h3><a name="id59584">1.3
The Service Concept</a></h3>
<p>Each client and server in inets is viewed as service. Services
may be configured to be started at application startup or
started dynamically in runtime. If you want to run inets as an
distributed application that should handle application failover
and takeover, services should be configured to be started at
application startup. When starting the inets application
the inets top supervisor will start a number of subsupervisors
and worker processes for handling the different services
provided. When starting services dynamically new children will
be added to the supervision tree, unless the service is started
with the stand alone option, in which case the service is linked
to the calling process and all OTP application features such as
soft upgrade are lost.</p>
<p>Services that should be configured for startup at application
startup time should be put into the erlang node configuration file
on the form: </p>
<div class="example"><pre>
[{inets, [{services, ListofConfiguredServices}]}].
</pre></div>
<p>For details of exactly what to put in the list of configured
services see the documentation for the services that should be
configured.</p>
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