est_create</code> function
returns a pointer to a request object (and never <code class="literal">NULL</code>).</p><p>The <code class="function">ne_request_dispatch</code> function
returns zero if the request was dispatched successfully, and a
non-zero error code otherwise.</p></div><div class="refsect1"><a name="idm209423166096"></a><h2>Errors</h2><div class="variablelist"><table border="0" class="variablelist"><colgroup><col align="left" valign="top"><col></colgroup><tbody><tr><td><p><span class="term"><s