e class="highlight swift"><code> <span class="c1">//Create a manager to manage all of the incoming sockets.</span>
 <span class="k">var</span> <span class="nv">manager</span><span class="p">:</span> <span class="kt">IncomingSocketManager</span><span class="p">?</span>

 <span class="k">override</span> <span class="kd">func</span> <span class="nf">setUp</span><span class="p">()</span> <span class="p">{</span>
     <span class="n">manager</span> <span class="o">=</span> <span class="kt">IncomingSocketManager<