8373807: test/jdk/java/net/httpclient/websocket/DummyWebSocketServer.java getURI() uses "localhost"

[rm-gh-8]

Backporting JDK-8373807: test/jdk/java/net/httpclient/websocket/DummyWebSocketServer.java getURI() uses "localhost".

The WebSocketTest experienced an intermittent timeout failure where WebSocketBuilder::build's CompletableFuture never completed.

Root Cause (suspected): Request misdirection due to using "localhost" in the URI, which can resolve to either IPv4 (127.0.0.1) or IPv6 (::1) depending on system configuration.

Fix: Change DummyWebSocketServer::getURI to return a URI with a literal IP address instead of "localhost" to ensure consistent address resolution and prevent misdirection.

For parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/jdk/java/net/httpclient/websocket

Results attached:

macos-aarch64-specific-test.log
windows-x64-specific-test.log
linux-x64-specific-test.log
linux-aarch64-specific-test.log

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8373807 needs maintainer approval

Issue

• JDK-8373807: test/jdk/java/net/httpclient/websocket/DummyWebSocketServer.java getURI() uses "localhost" (Bug - P4 - Approved)

Reviewing

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[openjdk]

@rm-gh-8 This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8373807: test/jdk/java/net/httpclient/websocket/DummyWebSocketServer.java getURI() uses "localhost"

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 11 new commits pushed to the master branch:

• 8839f6c: 8373704: Improve "SocketException: Protocol family unavailable" message
• e2b6007: 8375549: ConcurrentModificationException if jdk.crypto.disabledAlgorithms has multiple entries with known oid
• 2a57d96: 8369991: Thread blocking during JFR emergency dump must be in safepoint safe state
• ... and 8 more: https://git.openjdk.org/jdk25u-dev/compare/6c1dfb38050152b0afe18badf2c960b710ff3ce0...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @rm-gh-8 This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

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Webrevs

• 00: Full (2a89e8bf)

[rm-gh-8]

/approval request for backport of JDK-8373807: test/jdk/java/net/httpclient/websocket/DummyWebSocketServer.java getURI() uses "localhost".

This is a test fix.

For parity with Oracle JDK.

[openjdk]

@rm-gh-8
8373807: The approval request has been created successfully.

[rm-gh-8]

/integrate

[openjdk]

@rm-gh-8
Your change (at version 2a89e8b) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit a195e8a.
Since your change was applied there have been 16 commits pushed to the master branch:

• 97eaf9a: 8371383: Test sun/security/tools/jarsigner/DefaultOptions.java failed due to CertificateNotYetValidException
• b6c74c1: 8373832: Test java/lang/invoke/TestVHInvokerCaching.java tests nothing
• d0db33f: 8360395: sun/security/tools/keytool/i18n.java user country is current user location instead of the language
• ... and 13 more: https://git.openjdk.org/jdk25u-dev/compare/6c1dfb38050152b0afe18badf2c960b710ff3ce0...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @rm-gh-8 Pushed as commit a195e8a.

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