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Posted to notifications@shenyu.apache.org by "Aias00 (via GitHub)" <gi...@apache.org> on 2026/08/03 01:11:16 UTC
[I] [BUG] 5xx upstream responses never trigger failover retry (no error emitted) [shenyu]
Aias00 opened a new issue, #6734:
URL: https://github.com/apache/shenyu/issues/6734
- severity: Medium
- files: `shenyu-plugin/shenyu-plugin-httpclient/src/main/java/org/apache/shenyu/plugin/httpclient/WebClientPlugin.java:89`; `.../NettyHttpClientPlugin.java:89-120`; `.../DefaultRetryStrategy.java:105`
- description: `WebClientPlugin` installs `.onRawStatus(httpStatus -> httpStatus >= 400, clientResponse -> Mono.empty())`, so 4xx/5xx produce a completed response with no exception. Failover (`RetryEnum.FAILOVER`) is driven by `onErrorResume`; a 502/503/504 from an unhealthy-but-connected upstream emits no error, so failover never invokes — the bad status is passed straight through.
- impact: Operators relying on `retryStrategy=failover` get no failover for the most common unhealthy-upstream signal (5xx).
- suggested_fix: Optionally map configurable status codes (502/503/504) to errors before the retry strategy.
- confidence: Low-Medium
- related_existing: none — #4280 is a specific HTTPS bug, not the 5xx-no-error gap.
---
_Identified during the 2026-08-02 deep re-scan; full list in [`docs/scan2-2026-08-02/06-medium-tiers.md`](docs/scan2-2026-08-02/06-medium-tiers.md)._
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Re: [I] [BUG] 5xx upstream responses never trigger failover retry (no error emitted) [shenyu]
Posted by "Aias00 (via GitHub)" <gi...@apache.org>.
Aias00 closed issue #6734: [BUG] 5xx upstream responses never trigger failover retry (no error emitted)
URL: https://github.com/apache/shenyu/issues/6734
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Re: [I] [BUG] 5xx upstream responses never trigger failover retry (no error emitted) [shenyu]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #6734:
URL: https://github.com/apache/shenyu/issues/6734#issuecomment-5161309776
👋 Hello @Aias00
A new issue has been opened by @Aias00:
- **Title**: [BUG] 5xx upstream responses never trigger failover retry (no error emitted)
- **Link**: https://github.com/apache/shenyu/issues/6734
Please review when you have time. Thank you! 🙏
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