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<title>lwres_hstrerror</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en">
<a name="id2476267"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>lwres_herror, lwres_hstrerror — lightweight resolver error message generation</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="funcsynopsis">
<pre class="funcsynopsisinfo">#include <lwres/netdb.h></pre>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr>
<td><code class="funcdef">
void
<b class="fsfunc">lwres_herror</b>(</code></td>
<td>const char * </td>
<td>
<var class="pdparam">s</var><code>)</code>;</td>
</tr></table>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr>
<td><code class="funcdef">
const char *
<b class="fsfunc">lwres_hstrerror</b>(</code></td>
<td>int </td>
<td>
<var class="pdparam">err</var><code>)</code>;</td>
</tr></table>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id2543377"></a><h2>DESCRIPTION</h2>
<p><code class="function">lwres_herror()</code>
prints the string <em class="parameter"><code>s</code></em> on
<span class="type">stderr</span> followed by the string generated by
<code class="function">lwres_hstrerror()</code> for the error code stored
in the global variable <code class="constant">lwres_h_errno</code>.
</p>
<p><code class="function">lwres_hstrerror()</code>
returns an appropriate string for the error code gievn by
<em class="parameter"><code>err</code></em>. The values of the error codes and
messages are as follows:
</p>
<div class="variablelist"><dl>
<dt><span class="term"><span class="errorcode">NETDB_SUCCESS</span></span></dt>
<dd><p><span class="errorname">Resolver Error 0 (no error)</span>
</p></dd>
<dt><span class="term"><span class="errorcode">HOST_NOT_FOUND</span></span></dt>
<dd><p><span class="errorname">Unknown host</span>
</p></dd>
<dt><span class="term"><span class="errorcode">TRY_AGAIN</span></span></dt>
<dd><p><span class="errorname">Host name lookup failure</span>
</p></dd>
<dt><span class="term"><span class="errorcode">NO_RECOVERY</span></span></dt>
<dd><p><span class="errorname">Unknown server error</span>
</p></dd>
<dt><span class="term"><span class="errorcode">NO_DATA</span></span></dt>
<dd><p><span class="errorname">No address associated with name</span>
</p></dd>
</dl></div>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2543495"></a><h2>RETURN VALUES</h2>
<p>
The string <span class="errorname">Unknown resolver error</span> is returned by
<code class="function">lwres_hstrerror()</code>
when the value of
<code class="constant">lwres_h_errno</code>
is not a valid error code.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2543515"></a><h2>SEE ALSO</h2>
<p><span class="citerefentry"><span class="refentrytitle">herror</span>(3)</span>,
<span class="citerefentry"><span class="refentrytitle">lwres_hstrerror</span>(3)</span>.
</p>
</div>
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