title: WebFlux: How to abort request processing in WebFilter with provided response
body: <p>I'd like to do something like below in my WebFilter to optionally bypass subsequent filters and RestControllers:</p>
  
  <pre><code>if(shouldRedirect(exchange)){
    //do redirect
  }else if(!canAccess(exchange)){
    //return a 403 response
  }else{
    chain.filter(exchange);
  }
  </code></pre>
  
  <p>How am I supposed to do that?</p>
  
  <p>Thanks</p>
  
  <p>Leon</p>