tds/src/main/java/thredds/servlet/ServletUtil.java
public static String getParameterIgnoreCase(HttpServletRequest req, String paramName) {
    Enumeration e = req.getParameterNames();
    while (e.hasMoreElements()) {
      String s = (String) e.nextElement();
      if (s.equalsIgnoreCase(paramName))
        return req.getParameter(s);
    }
    return null;
  }
public static String getParameterIgnoreCase(HttpServletRequest req, String paramName) {
    Enumeration e = req.getParameterNames();
    while (e.hasMoreElements()) {
      String s = (String) e.nextElement();
      if (s.equalsIgnoreCase(paramName))
        return req.getParameter(s);
    }
    return null;
  }
Return the value of the given parameter for the given request. Should
only be used if the parameter is known to only have one value. If used
on a multi-valued parameter, the first value is returned.

@param req       the HttpServletRequest
@param paramName the name of the parameter to find.
@return the value of the given parameter for the given request.