How to get the client's ip address in jax rs and ws

In this tutorial I'll not teach how to create jax-rs nor jax-ws web service but rather will show how we can get the client's or the caller's ip address who invoke the service.

In jax-rs:

//inject
@Context
private HttpServletRequest httpServletRequest;

public void serviceMethod() {
 //get the ip
 log.debug("IP=" + httpServletRequest.getRemoteAddr());
}

In jax-ws, we inject a different resource but it's almost the same.

@Resource
private WebServiceContext wsContext;

public void serviceMethod() { 
 MessageContext mc = wsContext.getMessageContext();
 HttpServletRequest req = (HttpServletRequest) mc.get(MessageContext.SERVLET_REQUEST);

 log.debug("IP=" + req.getRemoteAddr());
}

If you need help building jax-rs service here's how I'm doing things: http://czetsuya-tech.blogspot.com/2014/11/rest-testing-with-arquillian-in-jboss.html.