RFR: 8349910: Implement HTTP/3 for the HTTP Client API

[Artur Barashev]

On Fri, 18 Apr 2025 13:05:24 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> Hi,
> 
> Please find here a PR for the implementation of JEP [JDK-8291976: HTTP/3 for the HTTP Client API](https://bugs.openjdk.org/browse/JDK-8291976).
> 
> The CSR can be viewed at [JDK-8350588: Implement 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.

We would need a unit test testing QUIC with `jdk.tls.disabledAlgorithms` and `jdk.certpath.disabledAlgorithms` algorithm constraints in `java.security` file. Those are currently being ignored as far as I can tell..

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PR Comment: https://git.openjdk.org/jdk/pull/24751#issuecomment-2822240636