/wro4j-core/src/main/java/ro/isdc/wro/http/handler/ResourceProxyRequestHandler.java
response.setContentLength( HttpServletResponse.SC_NOT_MODIFIED) ;
response.setStatus ( HttpServletResponse.SC_NOT_MODIFIED ) ;
try (InputStream is = new AutoCloseInputStream(locatorFactory.locate(resourceUri)); outputStream) { final int length = IOUtils.copy(is, outputStream); response.setContentLength(length); response.setStatus(HttpServletResponse.SC_OK); } } else { <extra_id_0> } } protected boolean isResourceChanged(final HttpServletRequest request) { try { final long ifModifiedSince = request.getDateHeader(HttpHeader.IF_MODIFIED_SINCE.toString()); return ifModifiedSince < getHeadersConfigurer().getLastModifiedTimestamp();