<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Standards compliance</title><link rel="stylesheet" type="text/css" href="../manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="neon HTTP/WebDAV client library"><link rel="up" href="intro.html" title="Chapter 1. Introduction"><link rel="prev" href="using.html" title="How to use neon from your application"><link rel="next" href="security.html" title="HTTP Client Security"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Standards compliance</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="using.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Introduction</th><td width="20%" align="right"> <a accesskey="n" href="security.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="compliance"></a>Standards compliance</h2></div></div></div><p>neon is intended to be compliant with the IETF and W3C
standards which it implements, with a few exceptions due to
practical necessity or interoperability issues. These
exceptions are documented in this section.</p><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="idm139901962061392"></a>RFC 2518, HTTP Extensions for Distributed Authoring—WebDAV</h3></div></div></div><p>neon is deliberately not compliant with section
23.4.2, and treats property names as a (namespace-URI, name)
pair. This is <a class="ulink" href="http://lists.w3.org/Archives/Public/w3c-dist-auth/1999OctDec/0343.html" target="_top">generally
considered</a> to be correct behaviour by the WebDAV
working group, and is likely to formally adopted in a future
revision of the specification.</p></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="idm139901961194512"></a>RFC 2616, Hypertext Transfer Protocol—HTTP/1.1</h3></div></div></div><p>There is some confusion in this specification about the
use of the <span class="quote">“<span class="quote">identity</span>”</span>
<em class="firstterm">transfer-coding</em>. neon ignores the
<code class="literal">Transfer-Encoding</code> response header if it
contains only the (now deprecated) <span class="quote">“<span class="quote">identity</span>”</span>
token, and will determine the response message length as if
the header was not present. neon will give an error if a
response includes a <code class="literal">Transfer-Encoding</code>
header with a value other than <span class="quote">“<span class="quote">identity</span>”</span> or
<span class="quote">“<span class="quote">chunked</span>”</span>.</p></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="idm139901961744128"></a>RFC 2617, HTTP Authentication: Basic and Digest Access Authentication</h3></div></div></div><p>neon is not strictly compliant with the quoting rules
given in the grammar for the <code class="literal">Authorization</code>
header. The grammar requires that the <code class="literal">qop</code>
and <code class="literal">algorithm</code> parameters are not quoted,
however one widely deployed server implementation
(Microsoft® IIS 5) rejects the request if these parameters
are not quoted. neon sends these parameters with
quotes—this is not known to cause any problems with
other server implementations.</p></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="idm139901960778368"></a>Namespaces in XML</h3></div></div></div><p>The neon XML parser interface will accept and parse
without error some XML documents which are well-formed
according to the XML specification but do not conform to the
"Namespaces in XML" specification <a class="xref" href="biblio.html#bib.xmlnames" title="Namespaces in XML">[<abbr class="abbrev">REC-XML-names</abbr>]</a>. Specifically: the restrictions on
the first character of the <code class="literal">NCName</code> rule are
not all implemented; neon will allow any
<code class="literal">CombiningChar</code>, <code class="literal">Extender</code>
and some characters from the <code class="literal">Digit</code> class in
this position.</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="using.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="intro.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="security.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">How to use neon from your application </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> HTTP Client Security</td></tr></table></div></body></html>