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25 <a name=
"id2482688"></a><div class=
"titlepage"></div>
26 <div class=
"refnamediv">
28 <p>lwres_herror, lwres_hstrerror
— lightweight resolver error message generation
</p>
30 <div class=
"refsynopsisdiv">
32 <div class=
"funcsynopsis">
33 <pre class=
"funcsynopsisinfo">#include
<lwres/netdb.h
></pre>
34 <p><code class=
"funcdef">
36 <b class=
"fsfunc">lwres_herror
</b>(
</code>const char *s
<code>)
</code>;
</p>
37 <p><code class=
"funcdef">
39 <b class=
"fsfunc">lwres_hstrerror
</b>(
</code>int err
<code>)
</code>;
</p>
42 <div class=
"refsect1" lang=
"en">
43 <a name=
"id2549424"></a><h2>DESCRIPTION
</h2>
45 <code class=
"function">lwres_herror()
</code> prints the string
46 <em class=
"parameter"><code>s
</code></em> on
<span class=
"type">stderr
</span> followed by the string
47 generated by
<code class=
"function">lwres_hstrerror()
</code> for the error code
48 stored in the global variable
<code class=
"constant">lwres_h_errno
</code>.
51 <code class=
"function">lwres_hstrerror()
</code> returns an appropriate string
52 for the error code gievn by
<em class=
"parameter"><code>err
</code></em>. The values of
53 the error codes and messages are as follows:
56 <div class=
"variablelist"><dl>
57 <dt><span class=
"term"><span class=
"errorcode">NETDB_SUCCESS
</span></span></dt>
59 <span class=
"errorname">Resolver Error
0 (no error)
</span>
61 <dt><span class=
"term"><span class=
"errorcode">HOST_NOT_FOUND
</span></span></dt>
63 <span class=
"errorname">Unknown host
</span>
65 <dt><span class=
"term"><span class=
"errorcode">TRY_AGAIN
</span></span></dt>
67 <span class=
"errorname">Host name lookup failure
</span>
69 <dt><span class=
"term"><span class=
"errorcode">NO_RECOVERY
</span></span></dt>
71 <span class=
"errorname">Unknown server error
</span>
73 <dt><span class=
"term"><span class=
"errorcode">NO_DATA
</span></span></dt>
75 <span class=
"errorname">No address associated with name
</span>
81 <div class=
"refsect1" lang=
"en">
82 <a name=
"id2549536"></a><h2>RETURN VALUES
</h2>
84 The string
<span class=
"errorname">Unknown resolver error
</span> is returned by
85 <code class=
"function">lwres_hstrerror()
</code>
87 <code class=
"constant">lwres_h_errno
</code>
88 is not a valid error code.
91 <div class=
"refsect1" lang=
"en">
92 <a name=
"id2549555"></a><h2>SEE ALSO
</h2>
94 <span class=
"citerefentry"><span class=
"refentrytitle">herror
</span>(
3)
</span>,
96 <span class=
"citerefentry"><span class=
"refentrytitle">lwres_hstrerror
</span>(
3)
</span>.