RFR: 8349910: Implement JEP 517: HTTP/3 for the HTTP Client API [v7]

[Artur Barashev]

On Fri, 6 Jun 2025 12:00:37 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

>> Hi,
>> 
>> Please find here a PR for the implementation of [JEP 517: HTTP/3 for the HTTP Client API](https://openjdk.org/jeps/517).
>> 
>> The CSR can be viewed at [JDK-8350588: Implement JEP 517: HTTP/3 for the HTTP Client API](https://bugs.openjdk.org/browse/JDK-8350588)
>> 
>> This JEP proposes to enhance the HttpClient implementation to support HTTP/3.
>> It adds a non-exposed / non-exported internal implementation of the QUIC protocol based on DatagramChannel and the SunJSSE SSLContext provider.
>
> Daniel Fuchs has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 499 commits:
> 
>  - merge latest changes from master branch
>  - http3: improve H3ConnectionPoolTest.java
>  - Fix snippet
>  - Improve key destruction
>  - merge latest changes from master branch
>  - http3: fix bug introduced by Http3ConnectionPool and improved debug logs
>  - http3: refactor HTTP/3 connection pool management in a separate class
>  - Ignore DestroyFailedExceptions
>  - Remove outdated TODO
>  - Remove outdated TODO
>  - ... and 489 more: https://git.openjdk.org/jdk/compare/65fda5c0...a5a0c7f8

src/java.base/share/classes/sun/security/ssl/X509Authentication.java line 229:

> 227:             // any algorithm constraints when choosing the client alias and
> 228:             // just call the functionally limited
> 229:             // javax.net.ssl.X509KeyManager.chooseClientAlias(...)

This comment should be updated as we do take into account algorithm constraints. I would remove `TODO` word as well, maybe replace it with `NOTE`

src/java.base/share/classes/sun/security/ssl/X509Authentication.java line 328:

> 326:                 // any algorithm constraints when choosing the server alias
> 327:                 // and just call the functionally limited
> 328:                 // javax.net.ssl.X509KeyManager.chooseServerAlias(...)

Same as above, update the comment

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PR Review Comment: https://git.openjdk.org/jdk/pull/24751#discussion_r2138847212
PR Review Comment: https://git.openjdk.org/jdk/pull/24751#discussion_r2138847768