code: public static String getServerPort() {
          String ret = getLatkeProperty("serverPort");
          if (null == ret) {
              final RequestContext requestContext = REQUEST_CONTEXT.get();
              if (null != requestContext) {
                  ret = requestContext.getRequest().getServerPort() + "";
              }
          }
  
          return ret;
      }
docs: Gets server port.
  
  @return server port