code: protected void doResponse(SipServletResponse response)
  			throws ServletException, IOException {
  		if(logger.isInfoEnabled()) {
  			logger.info("SimpleProxyServlet: Got response:\n" + response);
  		}
  		response.getSession().setAttribute("lastResponse", response);
  		SipServletRequest request = (SipServletRequest) sessions.get(response.getSession()).getAttribute("lastRequest");
  		SipServletResponse resp = request.createResponse(response.getStatus());
  		if(response.getContent() != null) {
  			resp.setContent(response.getContent(), response.getContentType());
  		}
  		resp.send();
  	}
docs: {@inheritDoc}