RFR: 8349705: java.net.URI.scanIPv4Address throws unnecessary URISyntaxException

[Xiaolong Peng]

On Mon, 10 Feb 2025 10:53:12 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

>> java.net.URI.scanIPv4Address is a private method, it is only called by java.net.URI.takeIPv4Address and java.net.URI.parseIPv4Address, the URISyntaxException("Malformed IPv4 address") is not necessary, returning -1 should be good. In one of our systems, we noticed the exception consumes ~0.3% CPU.
>> 
>> Additional test:
>> - [x] make test TEST=jdk/java/net
>> - [x] all tier2 tests(except DirectIOTest.java which is a [known issue](https://bugs.openjdk.org/browse/JDK-8333783))
>
> What tests did you run against those changes? You will need to run at least tier2 tests.

@dfuch 
Hi Daniel, thank you for the review of the changes, do you have other concerns on the PR?

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PR Comment: https://git.openjdk.org/jdk/pull/23538#issuecomment-2670172037