RFR [9] 8175261: Per-protocol setting for not working for JAR URLConnection defaultUseCaches

[Daniel Fuchs]

Hi Chris,

Looks good to me as well.

cheers,

-- daniel

On 20/02/17 16:14, Chris Hegarty wrote:
> The fix for 8163449 [1] "Allow per protocol setting for URLConnection
> defaultUseCaches", does not work for JAR URLs ( which embed URLs to
> the actual artifact ).
>
> The problem is that sun.net.www.protocol.jar.JarURLConnection passes
> all of the [g|s]et[Default]UseCaches() method calls to the embedded
> jar file URLConnection. This means any attempt to control caching for
> just JAR URLs fails. "jar" always ends up being treated like whatever
> the embedded URL is, which is exactly the case that 8163449 was trying
> to address.
>
> JarURLConnection should set the initial cache value of its emdedded
> URLConnection ( to the actual resource ), to whatever its initial
> value is. Subsequent set/getUseCaches will then behave as expected.
>
> http://cr.openjdk.java.net/~chegar/8175261.00/
> https://bugs.openjdk.java.net/browse/JDK-8175261
>
> -Chris
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8163449