title: Terminate particular Flux stream on the server
body: <p>I'm trying to build a simple chat server using Spring WebFlux. It's easy stuff and working as excepted. What i'm trying to implement now is a termination of the Flux stream on the server side. Imagine a have an infinite Flux exposed like this:</p>
  
  <pre><code>@GetMapping(produces = MediaType.APPLICATION_STREAM_JSON_VALUE)
  public Flux&lt;Object&gt; join(@PathVariable String user)
  </code></pre>
  
  <p>and  i have 10 clients/subscribers connected to that event stream. Now i'd like to terminate connection of one particular client because e.g. user cursed on the chat. Whatever. Is it possible to manage/identify subscribers of such endpoint?</p>