 class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">data</span> <a href="#t:Broker">Broker</a> auth = <a href="#v:Broker">Broker</a> {<ul class="subs"><li><a href="#v:brokerAuthenticator">brokerAuthenticator</a> :: auth</li><li><a href="#v:brokerRetainedMessages">brokerRetainedMessages</a> :: <a href="../base-4.9.0.0/Control-Concurrent-MVar.html#t:MVar">MVar</a> <a href="Network-MQTT