Using java.net.useSystemProxies has no effect

[jskov-jyskebank-dk]

Describe the issue

We use graalvm as a JDK for building native applications.

The build happens in a container where we need to set a proxy, as general egress is blocked.

Using -Djava.net.useSystemProxies=true has no apparent effect when using graalvm. It works with "regular" JDKs.

The http[s].proxyHost/proxyPort counterparts fortunately work, so we can use those instead.

Steps to reproduce the issue

Hard to reproduce without setting up an external proxy.

Describe GraalVM and your environment:

• GraalVM version: CE 22.0.0.2(tried on 21.3.0 and 21.3.1 as well)
• JDK major version: 11
• OS: linux
• Architecture: AMD64

More details

-XshowSettings shows that the setting of the property is registered. It just has no apparent effect.

[rodrigar-mx]

Thanks for reporting this issue. We will take a look into it and get back to you.