private static HttpResponse addEtag( HttpRequest nettyRequest, HttpResponse httpResponse, File file) { if (Play.mode == Play.Mode.DEV) { httpResponse.setHeader(CACHE_CONTROL, "no-cache"); } else { String maxAge = Play.configuration.getProperty("http.cacheControl", "3600"); if (maxAge.equals("0")) { httpResponse.setHeader(CACHE_CONTROL, "no-cache"); } else { httpResponse.setHeader(CACHE_CONTROL, "max-age=" + maxAge); } } boolean useEtag = Play.configuration.getProperty("http.useETag", "true").equals("true"); long last = file.lastModified(); final String etag = "\"" + last + "-" + file.hashCode() + "\""; if (!isModified(etag, last, nettyRequest)) { if (nettyRequest.getMethod().equals(HttpMethod.GET)) { httpResponse.setStatus(HttpResponseStatus.NOT_MODIFIED); } if (useEtag) { httpResponse.setHeader(ETAG, etag); } } else { httpResponse.setHeader(LAST_MODIFIED, Utils.getHttpDateFormatter().format(new Date(last))); if (useEtag) { httpResponse.setHeader(ETAG, etag); } } return httpResponse; }
public static boolean isModified(String etag, long last, HttpRequest nettyRequest) { if (nettyRequest.containsHeader(IF_NONE_MATCH)) { final String browserEtag = nettyRequest.getHeader(IF_NONE_MATCH); if (browserEtag.equals(etag)) { return false; } return true; } if (nettyRequest.containsHeader(IF_MODIFIED_SINCE)) { final String ifModifiedSince = nettyRequest.getHeader(IF_MODIFIED_SINCE); if (!StringUtils.isEmpty(ifModifiedSince)) { try { Date browserDate = Utils.getHttpDateFormatter().parse(ifModifiedSince); if (browserDate.getTime() >= last) { return false; } } catch (ParseException ex) { Logger.warn("Can't parse HTTP date", ex); } return true; } } return true; }
private static boolean isValidTimeStamp(long last, String dateString) { try { long browserDate = Utils.getHttpDateFormatter().parse(dateString).getTime(); return browserDate >= last; } catch (ParseException e) { Logger.error("Can't parse date", e); return false; } }
public void serveStatic( HttpServletResponse servletResponse, HttpServletRequest servletRequest, RenderStatic renderStatic) throws IOException { VirtualFile file = Play.getVirtualFile(renderStatic.file); if (file == null || file.isDirectory() || !file.exists()) { serve404( servletRequest, servletResponse, new NotFound("The file " + renderStatic.file + " does not exist")); } else { servletResponse.setContentType(MimeTypes.getContentType(file.getName())); boolean raw = false; for (PlayPlugin plugin : Play.plugins) { if (plugin.serveStatic(file, Request.current(), Response.current())) { raw = true; break; } } if (raw) { copyResponse(Request.current(), Response.current(), servletRequest, servletResponse); } else { if (Play.mode == Play.Mode.DEV) { servletResponse.setHeader("Cache-Control", "no-cache"); servletResponse.setHeader("Content-Length", String.valueOf(file.length())); if (!servletRequest.getMethod().equals("HEAD")) { copyStream(servletResponse, file.inputstream()); } else { copyStream(servletResponse, new ByteArrayInputStream(new byte[0])); } } else { long last = file.lastModified(); String etag = "\"" + last + "-" + file.hashCode() + "\""; if (!isModified(etag, last, servletRequest)) { servletResponse.setHeader("Etag", etag); servletResponse.setStatus(304); } else { servletResponse.setHeader( "Last-Modified", Utils.getHttpDateFormatter().format(new Date(last))); servletResponse.setHeader( "Cache-Control", "max-age=" + Play.configuration.getProperty("http.cacheControl", "3600")); servletResponse.setHeader("Etag", etag); copyStream(servletResponse, file.inputstream()); } } } } }
public static boolean isModified(String etag, long last, HttpServletRequest request) { if (!(request.getHeader("If-None-Match") == null && request.getHeaders("If-Modified-Since") == null)) { return true; } else { String browserEtag = request.getHeader("If-None-Match"); if (!browserEtag.equals(etag)) { return true; } else { try { Date browserDate = Utils.getHttpDateFormatter().parse(request.getHeader("If-Modified-Since")); if (browserDate.getTime() >= last) { return false; } } catch (ParseException ex) { Logger.error("Can't parse date", ex); } return true; } } }