code: public String getProxyURLString(HttpServletRequest req) throws MalformedURLException
      {
      	String proxyUrlString = proxyURLPrefix;
      	if (req.getPathInfo() != null)
      		if (req.getPathInfo().length() > 0)
      			proxyUrlString += req.getPathInfo();
      	if (req.getQueryString() != null)
      		if (req.getQueryString().length() > 0)
      			proxyUrlString += "?" + req.getQueryString();
      	req.getContentType();
      	return proxyUrlString;
      }
docs: Create the url string for the proxy server.
  @param req
  @return
  @throws MalformedURLException