if (isNotModified) {
try {
countCacheHit++;
statistics.addHit();
IHttpResponse resp = ce.newResponse();
resp.setHeader(XHEADER_NAME, "HIT - revalidated (xLightweb)");
resp.setAttribute(CACHE_HIT, "HIT (revalidated)");
exchange.send(resp);
} catch (IOException ioe) {
exchange.sendError(ioe);