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<title>12.17 xdrlib -- Encode and decode XDR data</title>
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<H1><A NAME="SECTION00141700000000000000000">
12.17 <tt class="module">xdrlib</tt> --
         Encode and decode XDR data</A>
</H1>

<P>
<A NAME="module-xdrlib"></A>

<P>
<a id='l2h-4164' xml:id='l2h-4164'></a>

<P>
The <tt class="module">xdrlib</tt> module supports the External Data Representation
Standard as described in <a class="rfc" id='rfcref-91292' xml:id='rfcref-91292'
href="http://www.faqs.org/rfcs/rfc1014.html">RFC 1014</a>, written by Sun Microsystems,
Inc. June 1987.  It supports most of the data types described in the
RFC.

<P>
The <tt class="module">xdrlib</tt> module defines two classes, one for packing
variables into XDR representation, and another for unpacking from XDR
representation.  There are also two exception classes.

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-4162' xml:id='l2h-4162' class="class">Packer</tt></b>(</nobr></td>
  <td><var></var>)</td></tr></table></dt>
<dd>
<tt class="class">Packer</tt> is the class for packing data into XDR representation.
The <tt class="class">Packer</tt> class is instantiated with no arguments.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-4163' xml:id='l2h-4163' class="class">Unpacker</tt></b>(</nobr></td>
  <td><var>data</var>)</td></tr></table></dt>
<dd>
<code>Unpacker</code> is the complementary class which unpacks XDR data
values from a string buffer.  The input buffer is given as
<var>data</var>.
</dl>

<P>
<div class="seealso">
  <p class="heading">See Also:</p>

  <dl compact="compact" class="seerfc">
    <dt><a href="http://www.faqs.org/rfcs/rfc1014.html"
        title="XDR: External Data Representation Standard"
        >RFC 1014, <em>XDR: External Data Representation Standard</em></a>
    <dd>This RFC
                defined the encoding of data which was XDR at the time
                this module was originally written.  It has
                apparently been obsoleted by <a class="rfc" id='rfcref-91288' xml:id='rfcref-91288'
href="http://www.faqs.org/rfcs/rfc1832.html">RFC 1832</a>.
  </dl>

<P>
<dl compact="compact" class="seerfc">
    <dt><a href="http://www.faqs.org/rfcs/rfc1832.html"
        title="XDR: External Data Representation Standard"
        >RFC 1832, <em>XDR: External Data Representation Standard</em></a>
    <dd>Newer RFC
                that provides a revised definition of XDR.
  </dl>
</div>

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<LI><A href="xdr-packer-objects.html">12.17.1 Packer Objects</a>
<LI><A href="xdr-unpacker-objects.html">12.17.2 Unpacker Objects</a>
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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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