Error message to mention UpstreamCodec filter #36367
Open
+64
−13
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Commit Message: Error message to mention UpstreamCodec filter
Additional Description: The requirement described in #26138 doesn't seem to be mentioned in documentation, and even if it was I most likely wouldn't have seen it and probably neither would the person who filed the issue, so documenting the requirement in the failed validation error message seems a more practical solution.
I also moved the function implementation out of the header file, making for cleaner code but a more unpleasant review, sorry.
Risk Level: Only changes an error message, so ~none.
Testing: Added unit test coverage (previously coverage was partial and from integration tests).
Docs Changes: n/a
Release Notes: n/a
Platform Specific Features: n/a