Java Code Examples for javax.servlet.http.HttpServletRequest.upgrade()

The following are Jave code examples for showing how to use upgrade() of the javax.servlet.http.HttpServletRequest class. You can vote up the examples you like. Your votes will be used in our system to get more good examples.
Example 1
Project: Mastering-Java-EE-Development-with-WildFly   File: UpgradeServlet.java   Source Code and License Vote up 6 votes
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
		throws ServletException, IOException {
	response.setContentType("text/html;charset=UTF-8");
	try (PrintWriter out = response.getWriter()) {
		out.println("<html>");
		out.println("<head>");
		out.println("<title>Servlet UpgradeServlet</title>");
		out.println("</head>");
		out.println("<body>");
		out.println("<h1>Servlet UpgradeServlet at " + request.getContextPath() + "</h1>");
		if (request.getHeader("Upgrade").equals("echo")) {
			response.setStatus(SC_SWITCHING_PROTOCOLS);
			response.setHeader("Connection", "Upgrade");
			response.setHeader("Upgrade", "echo");
			request.upgrade(SampleProtocolHandler.class);
			logger.info("Request upgraded to SampleProtocolHandler");
		}
		out.println("</body>");
		out.println("</html>");
	}
}