|
1607
|
1 package goodjava.webserver.handlers;
|
|
|
2
|
|
|
3 import goodjava.webserver.Handler;
|
|
|
4 import goodjava.webserver.Request;
|
|
|
5 import goodjava.webserver.Response;
|
|
|
6
|
|
|
7
|
|
|
8 public class HeadersHandler implements Handler {
|
|
|
9 private final Handler handler;
|
|
|
10
|
|
|
11 public HeadersHandler(Handler handler) {
|
|
|
12 this.handler = handler;
|
|
|
13 }
|
|
|
14
|
|
|
15 public Response handle(Request request) {
|
|
|
16 Response response = handler.handle(request);
|
|
|
17 if( response!=null ) {
|
|
|
18 if( response.headers.get("Last-Modified")!=null
|
|
|
19 && response.headers.get("Cache-Control")==null
|
|
|
20 ) {
|
|
|
21 String contentType = (String)response.headers.get("Content-Type");
|
|
|
22 if( contentType!=null
|
|
|
23 && !contentType.startsWith("image/")
|
|
|
24 && !contentType.startsWith("video/")
|
|
|
25 )
|
|
|
26 response.headers.put("Cache-Control","max-age=3600");
|
|
|
27 }
|
|
|
28 if( response.headers.get("Last-Modified")!=null
|
|
|
29 && response.headers.get("X-Accel-Expires")==null
|
|
|
30 )
|
|
|
31 response.headers.put("X-Accel-Expires","1");
|
|
|
32 }
|
|
|
33 return response;
|
|
|
34 }
|
|
|
35 }
|
