tds/src/main/java/thredds/servlet/ServletUtil.java
public static String getReletiveURL(HttpServletRequest req) {
    return req.getContextPath() + req.getServletPath() + req.getPathInfo();
  }
public static String getReletiveURL(HttpServletRequest req) {
    return req.getContextPath() + req.getServletPath() + req.getPathInfo();
  }
Return the request URL relative to the server (i.e., starting with the context path).

@param req request
@return URL relative to the server