private void setSocketOptions(final Builder builder) {
   val socketOptions = kikahaConf.config().getConfig("server.undertow.socket-options");
   for (val entry : socketOptions.entrySet()) {
     val option = getConfigOption(entry.getValue(), entry.getKey());
     if (option != null) builder.setSocketOption(option.getOption(), option.getValue());
   }
 }