Will javax.servlet.Filter intercept Websocket messages? (Java Servlet API)

Question

When I have a websocket connection, say at \"/ws\"

Will a regular javax.servlet.Filter on the \"/ws\" path intercept each message as a regular http request? Will it

Answer 1

Will it intercept only the first request (as part of the handshake?)

Yes, only the first request, the one that initiates the WebSocket Handshake, is intercepted by the Servlet Filter.