Doesn't JnlpDownloadServlet check for "If-Modified-Since" http header?
Hello,
Since I migrated to JnlpDownloadServlet I got rid of update-problems I had with jnlp-files downloaded from a server.
However now Webstart downloads all jar-files from the servlet each time the application is launched, even if an appropriate version is already in cache.
A typical conversation between webstart and the JnlpDownloadServlet looks like this:
GET /webstart/applet_core.jar HTTP/1.1
content-type: application/x-java-archive
accept-encoding: pack200-gzip,gzip
User-Agent: JNLP/6.0 javaws/1.6.0-rc (rc-b104) Java/1.6.0-rc
UA-Java-Version: 1.6.0-rc
Host: 10.0.0.1:3355
Cache-Control: no-cache
Pragma: no-cache
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
If-Modified-Since: Tue, 02 Jan 2007 17:27:48 GMT
HTTP/1.1 200 OK
Date: Tue, 02 Jan 2007 17:42:36 GMT
Server: Jetty/5.1.2 (Linux/2.6.18-1.2849.fc6 i386 java/1.6.0-rc
Content-Type: application/java-archive
Content-Length: 736379
Last-Modified: Tue, 02 Jan 2007 17:27:48 GMT
.........binary jar data coming here ..............
However it looks every time the same - although the Webstart-Client says it only needs the data "If-Modified-Since: Tue, 02 Jan 2007 17:27:48 GMT" the servlet sends everything again and again.
I checked the source and was not able to locate the piece of code the checks for the "If-Modified-Since"-Header, so does the servlet even honor this request or does it send everytime the full jar down the the Webstart-Client.
I used the source that is distributed in the jdk6 under samples/jnlp.
Any ideas or help your be very welcome.
Thank you in advance, lg Clemens
