Replaces the fixed delay in `IsAvailable.java` with reads from the socket used by `HttpClient::available`. The tests wait for EOF or data on that socket before invoking the existing `HttpClient::available` assertion.
No production code is changed. Testing: - `make test TEST='test/jdk/sun/net/www/http/HttpClient/IsAvailable.java' JTREG='REPEAT_COUNT=200;VERBOSE=summary;RETAIN=fail'` (200/200 passed) - `make test TEST='test/jdk/sun/net/www/http/HttpClient/IsAvailable.java' JTREG='VERBOSE=summary;RETAIN=fail;VM_OPTIONS=-Dsun.net.client.defaultReadTimeout=200'` (passed) --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8390064: Stabilize IsAvailable test Changes: https://git.openjdk.org/jdk/pull/32539/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=32539&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8390064 Stats: 44 lines in 1 file changed: 40 ins; 0 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/32539.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/32539/head:pull/32539 PR: https://git.openjdk.org/jdk/pull/32539
