This PR improves the execution time of jdk_net tests (and, by extension, tier2) by about 3 minutes.
Tests located under `jdk/java/net/httpclient/websocket` are never run in parallel. Each of the 8 modified `Pending***` tests originally required 40 seconds to complete. After the proposed changes, they usually complete in 15 seconds. This PR modifies the tests to initially run with 1 second timeout. If the test fails with 1 second timeout, it is retried with timeout increased to 10 seconds (the original value). The modified tests were executed at least 10 times on each of: Windows, Linux (both x64 and aarch64), MacOS (both x64 and aarch64). No failures were observed. ------------- Commit messages: - Explain magic timeouts - Retry all operations - Increase initial wait for Windows machines - Fix test retry - Avoid one 5-second wait - Use shorter timeout on the first try Changes: https://git.openjdk.java.net/jdk/pull/8746/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8746&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8286873 Stats: 139 lines in 10 files changed: 70 ins; 38 del; 31 mod Patch: https://git.openjdk.java.net/jdk/pull/8746.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8746/head:pull/8746 PR: https://git.openjdk.java.net/jdk/pull/8746
