text: function get_host_info() {
  
    var HTTP_PORT = '{{ports[http][0]}}';
    var HTTP_PORT2 = '{{ports[http][1]}}';
    var HTTPS_PORT = '{{ports[https][0]}}';
    var PROTOCOL = self.location.protocol;
    var IS_HTTPS = (PROTOCOL == "https:");
    var HTTP_PORT_ELIDED = HTTP_PORT == "80" ? "" : (":" + HTTP_PORT);
    var HTTP_PORT2_ELIDED = HTTP_PORT2 == "80" ? "" : (":" + HTTP_PORT2);
    var HTTPS_PORT_ELIDED = HTTPS_PORT == "443" ? "" : (":" + HTTPS_PORT);
    var PORT_ELIDED = IS_HTTPS ? HTTPS_PORT_ELIDED : HTTP_PORT_ELIDED;
    var ORIGINAL_HOST = '{{host}}';
    var REMOTE_HOST = (ORIGINAL_HOST === 'localhost') ? '127.0.0.1' : ('www1.' + ORIGINAL_HOST);
    var OTHER_HOST = '{{domains[www2]}}';
    var NOTSAMESITE_HOST = (ORIGINAL_HOST === 'localhost') ? '127.0.0.1' : ('not-' + ORIGINAL_HOST);
  
    return {
      HTTP_PORT: HTTP_PORT,
      HTTP_PORT2: HTTP_PORT2,
      HTTPS_PORT: HTTPS_PORT,
      ORIGINAL_HOST: ORIGINAL_HOST,
      REMOTE_HOST: REMOTE_HOST,
  
      ORIGIN: PROTOCOL + "//" + ORIGINAL_HOST + PORT_ELIDED,
      HTTP_ORIGIN: 'http://' + ORIGINAL_HOST + HTTP_PORT_ELIDED,
      HTTPS_ORIGIN: 'https://' + ORIGINAL_HOST + HTTPS_PORT_ELIDED,
      HTTPS_ORIGIN_WITH_CREDS: 'https://foo:bar@' + ORIGINAL_HOST + HTTPS_PORT_ELIDED,
      HTTP_ORIGIN_WITH_DIFFERENT_PORT: 'http://' + ORIGINAL_HOST + HTTP_PORT2_ELIDED,
      REMOTE_ORIGIN: PROTOCOL + "//" + REMOTE_HOST + PORT_ELIDED,
      HTTP_REMOTE_ORIGIN: 'http://' + REMOTE_HOST + HTTP_PORT_ELIDED,
      HTTP_NOTSAMESITE_ORIGIN: 'http://' + NOTSAMESITE_HOST + HTTP_PORT_ELIDED,
      HTTP_REMOTE_ORIGIN_WITH_DIFFERENT_PORT: 'http://' + REMOTE_HOST + HTTP_PORT2_ELIDED,
      HTTPS_REMOTE_ORIGIN: 'https://' + REMOTE_HOST + HTTPS_PORT_ELIDED,
      HTTPS_REMOTE_ORIGIN_WITH_CREDS: 'https://foo:bar@' + REMOTE_HOST + HTTPS_PORT_ELIDED,
      HTTPS_NOTSAMESITE_ORIGIN: 'https://' + NOTSAMESITE_HOST + HTTPS_PORT_ELIDED,
      UNAUTHENTICATED_ORIGIN: 'http://' + OTHER_HOST + HTTP_PORT_ELIDED,
      AUTHENTICATED_ORIGIN: 'https://' + OTHER_HOST + HTTPS_PORT_ELIDED
    };
  }
  
  function get_port(loc) {
    // When a default port is used, location.port returns the empty string.
    // To compare with wptserve `ports` substitution we need a port...
    // loc can be Location/<a>/<area>/URL, but assumes http/https only.
    if (loc.port) {
      return loc.port;
    }
    return loc.protocol === 'https:' ? '443' : '80';
  }
  