/*
                 * Server challenge no longer valid for
                 * externally supplied password hashes.
                 */
                resp.sendRedirect(req.getRequestURL().toString());
                return;
            }
            resp.setHeader("WWW-Authenticate", "NTLM");
            if (offerBasic) {

                        locationBuf.append(urlCodec.encode(value, encoding));
                    }

                }
                final HttpServletResponse res = (HttpServletResponse) response;
                res.sendRedirect(locationBuf.toString());
                return;
            }
        }

        chain.doFilter(request, response);
    }

    /**

        @Override
        public void sendError(int sc, String msg) {
        }

        @Override
        public void sendError(int sc) {
        }

        @Override
        public void sendRedirect(String location) {
        }

        @Override
        public void setDateHeader(String name, long date) {
        }

        @Override
        public void addDateHeader(String name, long date) {

                /* Server challenge no longer valid for
                 * externally supplied password hashes.
                 */
                resp.sendRedirect(req.getRequestURL().toString());
                return;
            }
            resp.setHeader("WWW-Authenticate", "NTLM");
            if (offerBasic) {

            }

            @Override
            public void sendError(int sc) throws IOException {
            }

            @Override
            public void sendRedirect(String location) throws IOException {
            }

            @Override
            public void setDateHeader(String name, long date) {
            }

            @Override

        @Override
        public void sendError(int sc, String msg) {
        }

        @Override
        public void sendError(int sc) {
        }

        @Override
        public void sendRedirect(String location) {
        }

        @Override
        public void setDateHeader(String name, long date) {
        }

        @Override
        public void addDateHeader(String name, long date) {

            public void sendError(int sc, String msg) {
            }

            @Override
            public void sendError(int sc) {
            }

            @Override
            public void sendRedirect(String location) {
            }

            @Override
            public void setDateHeader(String name, long date) {
            }

            @Override