&nbsp;<span class="constructor">MSG_OOB</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">MSG_DONTROUTE</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">MSG_PEEK</span><br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;recv&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">UnixLabels</span>.file_descr&nbsp;<span class="keywordsign">-&gt;</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;buf:bytes&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;pos:in