Aias00 opened a new issue, #6598:
URL: https://github.com/apache/shenyu/issues/6598
## Description
All k8s ingress parsers build `DivideUpstream` with
`upstream.setProtocol("http://";)` hardcoded, with `// TODO support config
protocol in annotation`. Until implemented, TLS/HTTPS ingress backends are
mis-proxied as plain HTTP.
## Location
```
shenyu-kubernetes-controller/.../parser/DivideIngressParser.java:177-178,324-325
.../reconciler/EndpointsReconciler.java:159-160
.../reconciler/IngressReconciler.java:629,643-644
```
## Impact
Functional correctness + security (TLS downgrade) in the k8s controller.
## Suggested fix
Wire a `nginx.ingress.kubernetes.io/backend-protocol` (or ShenYu-specific)
annotation to select `https://`/`grpcs://`; default safe.
## 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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