Mantis - Resin
While trying to add HTTP Caching configuration again to certain web-apps we have observed a problem that when a Rewrite Rule was present, the Cache-Control: max-age=nnn" header was removed.
It was possible to make a simple test web-app with one .png image that should be cached. Resin will add the proper Header when <proxy-cache> and <cache-mapping> is configured, but once a conditional rewrite rule has been added, it's gone.
The Additional information contains further desriptions on how to reproduce the issue.
- Downloaded Resin Professional 4.0.53
- cd into resin-pro-4.0.53
- Copy our Pro license into resin-pro-4.0.53/licenses
- Added the following line into resin.xml to add the <proxy-cache> within the <cluster id="app">
Here is the diff between the new resin.xml and the original one:
84,86d83
<
< <proxy-cache path="cache-test" memory-size="256M" disk-size="2G" entries="16384" max-entry-size="2M" enable="true" enable-range="true"/>
<
drop test.war (uploaded to this bug-report) into resin-pro-4.0.53/webapps
Run curl on command line to see the headers of a request to the test web-app's /images/logo.png file:
curl -o /dev/null -s -D - http://localhost:8080/test/images/logo.png [^]
HTTP/1.1 200 OK
Server: Resin/4.0.53
ETag: "409sQeD44+m"
Last-Modified: Thu, 22 Jun 2017 12:27:22 GMT
Accept-Ranges: bytes
Cache-Control: max-age=666
Content-Type: image/png
Content-Length: 5964
Date: Thu, 22 Jun 2017 12:34:39 GMT
==> As you can see there is the "Cache-Control: max-age=666" header returned by Caucho Resin 4.0.53
Now, let's make a simple change in the resin-pro-4.0.53/webapps/test/resin-web.xml file and add the following Redirect Rule (just uncomment it in the file)
<resin:Redirect regexp="^/" target="http://example.com/"> [^]
<resin:IfCookie name="DummyIsNotSet"/>
</resin:Redirect>
Restart Resin or the Web-App and then run curl again:
curl -o /dev/null -s -D - http://localhost:8080/test/images/logo.png [^]
HTTP/1.1 200 OK
Server: Resin/4.0.53
Cache-Control: private
ETag: "409sQeD44+m"
Last-Modified: Thu, 22 Jun 2017 12:27:22 GMT
Accept-Ranges: bytes
Content-Type: image/png
Content-Length: 5964
Date: Thu, 22 Jun 2017 12:47:35 GMT
==> Now, the "Cache-Control: max-age=666" is gone, but the "Cache-Control: private". But this is not enough without either "Expire" or "Cache-Control: max-age".
But the resin-web.xml still contains the "<cache-mapping url-pattern="/*.png" max-age="666"/>" and the Rewrite has not fired.
test.war [^] (7,074 bytes) 06-22-17 06:15