tsd-signature-symbol">(</span>port<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span>, hostname<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span>, backlog<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">undefined</