[jdk17u-dev] RFR: 8304962: sun/net/www/http/KeepAliveCache/B5045306.java: java.lang.RuntimeException: Failed: Initial Keep Alive Connection is not being reused

[Christoph Langer]

Hi all,

This pull request contains a backport of [JDK-8304962](https://bugs.openjdk.org/browse/JDK-8304962), commit [cddaf686](https://github.com/openjdk/jdk21u-dev/commit/cddaf686e16424e9543be50a48b1c02337e79cf1) from the [openjdk/jdk21u-dev](https://git.openjdk.org/jdk21u-dev) repository.

The commit being backported was authored by Daniel Jeliński on 28 Mar 2023 and was reviewed by Jaikiran Pai.

Thanks!

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Commit messages:
 - Backport cddaf686e16424e9543be50a48b1c02337e79cf1

Changes: https://git.openjdk.org/jdk17u-dev/pull/2781/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2781&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8304962
  Stats: 9 lines in 1 file changed: 1 ins; 2 del; 6 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2781.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2781/head:pull/2781

PR: https://git.openjdk.org/jdk17u-dev/pull/2781