String scheme = request.getScheme();           // http
String serverName = request.getServerName();   // www.mydomain.com
int portNumber = request.getServerPort();      // default 80
String contextPath = request.getContextPath(); // /myWebApp
String servletPath = request.getServletPath(); // /theServlet
String pathInfo = request.getPathInfo();       // /p1/p2/p3;sid=123
String requestURI = request.getRequestURI();       // /myWebApp/theServlet/p1/p2/p3;sid=123
String queryString = request.getQueryString(); // param=abc
boolean isSecure = request.isSecure();         // false, would be true if protocol is HTTPS