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<section id="nbnsprotocol-class">
<h1>NBNSProtocol Class<a class="headerlink" href="#nbnsprotocol-class" title="Permalink to this heading">¶</a></h1>
<p>pysmb has a <em>NBNSProtocol</em> implementation for Twisted framework.
This allows you to perform name query asynchronously without having your application to block and wait for the results.</p>
<dl class="simple">
<dt>In your project,</dt><dd><ol class="arabic simple">
<li><p>Create a NBNSProtocol instance.</p></li>
<li><p>Just call <em>queryName</em> method which will return a <em>Deferred</em> instance. Add your callback function to the <em>Deferred</em> instance via <em>addCallback</em> method to receive the results of the name query.</p></li>
<li><p>When you are done with the NBNSProtocol instance, call its <NBNSProtocol instance>.transport.stopListening method to remove this instance from the reactor.</p></li>
</ol>
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