cors: return local reply when preflight origin does not match allowed origins #33051
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Signed-off-by: Christoph Pakulski <[email protected]>
Signed-off-by: Christoph Pakulski <[email protected]>
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CC @envoyproxy/api-shepherds: Your approval is needed for changes made to |
Signed-off-by: Christoph Pakulski <[email protected]>
mattklein123
approved these changes
Mar 22, 2024
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Commit Message:
cors: return local reply when preflight origin does not match allowed origins
Additional Description:
When CORS preflight's origin does not match configured allowed origins, the filter continued iteration. The preflight reached the upstream server. Some users expressed interest in generating local reply in such situation. Based on CORS specs, locally generated reply should not contain
access-control-allow-originresponse header. This behaviour is controlled by API and default setting is to forward the preflight to upstream.Risk Level: Low
Testing: Added unit/integration tests.
Docs Changes: Yes
Release Notes: Yes
Platform Specific Features: No
Fixes #14233