r-name">cancelOnError</span></span> })
            <span class="returntype parameter">&#8594; <a href="dart-async/StreamSubscription-class.html">StreamSubscription</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="dart-io/RawSecureSocket-class.html">RawSecureSocket</a></span>&gt;</span></span>
          </span>
                  </dt>
        <dd>
          Adds a subscription to this stream. <a href="dart-io/RawSecureServerSocket/listen.html">[...]</a>
                  <div class="