"mdzsyn-coresym">net/listen</span> <span class="mdzsyn-string">"127.0.0.1"</span> <span class="mdzsyn-string">"8009"</span> <span class="mdzsyn-keyword">:datagram</span>))
(<span class="mdzsyn-coresym">while</span> <span class="mdzsyn-constant">true</span>
  (<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">buf</span> <span class="mdzsyn-string">@""</span>)
  (<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">who</span> (<span class="mdzsyn-keyword">:recv-from</span> <sp