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6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<a name="id2476275"></a><div class="titlepage"></div>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<p>lwres_herror, lwres_hstrerror — lightweight resolver error message generation</p>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<pre class="funcsynopsisinfo">#include <lwres/netdb.h></pre>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<b class="fsfunc">lwres_herror</b>(</code></td>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<var class="pdparam">s</var><code>)</code>;</td>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<b class="fsfunc">lwres_hstrerror</b>(</code></td>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<var class="pdparam">err</var><code>)</code>;</td>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<a name="id2543379"></a><h2>DESCRIPTION</h2>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<p><code class="function">lwres_herror()</code>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi prints the string <em class="parameter"><code>s</code></em> on
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi <span class="type">stderr</span> followed by the string generated by
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi <code class="function">lwres_hstrerror()</code> for the error code stored
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi in the global variable <code class="constant">lwres_h_errno</code>.
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<p><code class="function">lwres_hstrerror()</code>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi returns an appropriate string for the error code gievn by
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi <em class="parameter"><code>err</code></em>. The values of the error codes and
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi messages are as follows:
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dt><span class="term"><span class="errorcode">NETDB_SUCCESS</span></span></dt>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dd><p><span class="errorname">Resolver Error 0 (no error)</span>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dt><span class="term"><span class="errorcode">HOST_NOT_FOUND</span></span></dt>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dd><p><span class="errorname">Unknown host</span>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dt><span class="term"><span class="errorcode">TRY_AGAIN</span></span></dt>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dd><p><span class="errorname">Host name lookup failure</span>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dt><span class="term"><span class="errorcode">NO_RECOVERY</span></span></dt>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dd><p><span class="errorname">Unknown server error</span>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dt><span class="term"><span class="errorcode">NO_DATA</span></span></dt>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<dd><p><span class="errorname">No address associated with name</span>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi<a name="id2543497"></a><h2>RETURN VALUES</h2>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi The string <span class="errorname">Unknown resolver error</span> is returned by
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi <code class="function">lwres_hstrerror()</code>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi when the value of
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi <code class="constant">lwres_h_errno</code>
6716431ba7de213d5c318e58dc24c8a36da9b068Robert Mustacchi is not a valid error code.