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1607
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1 package goodjava.webserver.handlers;
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2
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3 import goodjava.webserver.Handler;
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4 import goodjava.webserver.Request;
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5 import goodjava.webserver.Response;
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6
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7
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8 public class HeadersHandler implements Handler {
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9 private final Handler handler;
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10
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11 public HeadersHandler(Handler handler) {
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12 this.handler = handler;
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13 }
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14
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15 public Response handle(Request request) {
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16 Response response = handler.handle(request);
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17 if( response!=null ) {
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18 if( response.headers.get("Last-Modified")!=null
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19 && response.headers.get("Cache-Control")==null
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20 ) {
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21 String contentType = (String)response.headers.get("Content-Type");
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22 if( contentType!=null
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23 && !contentType.startsWith("image/")
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24 && !contentType.startsWith("video/")
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25 )
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26 response.headers.put("Cache-Control","max-age=3600");
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27 }
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28 if( response.headers.get("Last-Modified")!=null
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29 && response.headers.get("X-Accel-Expires")==null
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30 )
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31 response.headers.put("X-Accel-Expires","1");
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1609
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32 if( response.headers.get("Access-Control-Allow-Origin")==null )
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33 response.headers.put("Access-Control-Allow-Origin","*");
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1607
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34 }
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35 return response;
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36 }
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37 }
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