to the
host of the external service.</p><ul><li>TCP proxy virtual listener - If the external service port doesn&rsquo;t map to any
HTTP based service ports within the cluster, this listener is invoked and
<code>istio_tcp_connections_closed_total</code> is the metric that will be increased:</li></ul><pre><code class=language-json data-expandlinks=true data-repo=istio>{
  &#34;status&#34;: &#34;success&#34;,
  &#34;data&#34;: {
    &#34;resultType&#34;: &#34;vector&#34;,
    &#34;result&#34;: [
      {
      