Aias00 opened a new issue, #6589:
URL: https://github.com/apache/shenyu/issues/6589
## Description
`when(upstream.getUrl()).thenReturn("https://www.baidu.com";);
healthCheckTask.run();` opens a real outbound TLS connection to a public site.
The comment even admits it ("Even if the address could not connect, it will
return false"). Fails on any CI without internet egress or when baidu is slow.
## Location
```
shenyu-loadbalancer/src/test/java/org/apache/shenyu/loadbalancer/cache/UpstreamCheckTaskTest.java:90
```
## Impact
Environment-dependent false failures; test asserts behavior the comment says
is unreliable.
## Suggested fix
`mockStatic(UpstreamCheckUtils.class)` to return canned results, or point at
a `WireMock`/`HttpServer` started on `new ServerSocket(0)`.
## Related existing issue(s)
None
_Identified during the 2026-08-02 audit; full list in
[`docs/issue-candidates-2026-08-02.md`](docs/issue-candidates-2026-08-02.md)._
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