Ensure `HttpClient::sendAsync` translates every operational failure to an `IOException` as per specification.
`tier1-2` passes with the proposed changes. **Context:** The parent issue, [JDK-8364733], reports that `HttpClient::sendAsync` leaks exceptions which do not extend from `IOException`, and this violates the method's specification. The [JDK-8367067] (#26876) sub-task improved issues around exceptions thrown by request body publishers – which triggered the first encounter with this problem. This PR (and its associated sub-task) is aimed to end this saga. [JDK-8364733]: https://bugs.openjdk.org/browse/JDK-8364733 [JDK-8367067]: https://bugs.openjdk.org/browse/JDK-8367067 ------------- Commit messages: - Document exception wrapping in `HttpClientImpl::send` - Fix test failures - Ensure `sendAsync` wraps execution failures in `IOException` Changes: https://git.openjdk.org/jdk/pull/27787/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27787&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8368249 Stats: 379 lines in 7 files changed: 323 ins; 41 del; 15 mod Patch: https://git.openjdk.org/jdk/pull/27787.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27787/head:pull/27787 PR: https://git.openjdk.org/jdk/pull/27787
