title: Filters for webflux spring boot app, which return ResponseEntity<?>
body: <p>My spring boot application configured as reactive. But my REST API endpoints  configured for return ResponseEntity without Mono or Flux.</p>
  
  <pre><code>@GetMapping("/wiki/test")
      public ResponseEntity&lt;?&gt; test() {
          log.info("TEST CALLED????");
          return ResponseEntity.ok().body("HALLO");
      }
  </code></pre>
  
  <p>I want to implement filter which will check incoming headers for every endpoint. Old Servlet filters of course does not work, also not working new WebFilter for webflux and others.</p>
  
  <p>My project located in github <a href="https://github.com/armdev/microservices-security/blob/master/wiki/src/main/java/io/project/app/resources/WikiController.java" rel="nofollow noreferrer">wiki controller</a></p>
  
  <p>I do not want use router based endpoints and I am prefer Netty under Spring boot. Which kind of filters I can use for both: reactive and servlet applications? Any suggestions?</p>