code: private HostInfo getClientHost() {
          String host = AppProperties.get(SSRKeys.SSR_CLIENT_HOST).orElse(null);
          if (isEmpty(host)) {
              logger.info("Client host not provided using '{}' to discover host address", discovery.getClass().getSimpleName());
              return discovery.resolveHost();
          } else {
              logger.info("Client host provided: {}", host);
              InetAddress address = tryParse(host);
              if (address != null) {
                  return new HostInfo(address.getHostAddress(), address.getHostName());
              }
              return new HostInfo(host, host);
          }
      }
docs: --------------------- CLIENT PROPERTIES -----------------