title: Will javax.servlet.Filter intercept Websocket messages? (Java Servlet API)
body: <p>When I have a websocket connection, say at "/ws"</p>
  
  <p>Will a regular javax.servlet.Filter on the "/ws" path intercept each message as a regular http request? Will it intercept only the first request (as part of the handshake?)</p>
  
  <p>If no, then, how can I make such a filter for websocket messages?</p>
  
  <p>I don't find any specifics about that in the spec.</p>