feat: support both enable/disable attribute for multi value headers on ALB #392
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…n ALB Setting found in target groups of lambda type.
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| const multiValueHeaders = !event.headers ? getMultiValueHeaders({ headers: responseHeaders }) : undefined | ||
| const headers = event.headers | ||
| ? Object.entries(responseHeaders).reduce((acc, [k, v]) => { | ||
| acc[k] = Array.isArray(v) ? v[0] : v | ||
| return acc | ||
| }, {}) | ||
| : undefined |
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Could you add some comments on what we're trying to do here? Why are we using event.headers (request headers) for response headers?
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Thanks for the PR. Could you add more context on why this is needed? Thanks! |
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When multi header value setting is disabled in target group (the default, in an ALB config), we receive this kind of event :
When multi value headers setting is enabled, we have this kind of event
This patch accomodates both configurations dynamically. |
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Was this ever implemented? I find that I must enable multi-value header option on ALB target group, or headers are not recognized at all in express server. At least, I know for sure that CORs does not work at all unless multi-value headers are enabled. |
# [4.5.0](v4.4.0...v4.5.0) (2021-10-13) ### Features * support both enable/disable attribute for multi value headers on ALB ([#392](#392)) ([a5cb5b5](a5cb5b5))
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🎉 This PR is included in version 4.5.0 🎉 The release is available on: Your semantic-release bot 📦🚀 |
CodeGenieApp/serverless-express#392 makes the handler return headers in the field matching the one where it receives request headers: `headers` or `multiValueHeaders`. (I guess this is a preference for ALB?) Our mock server needs to be consistent in which one it looks at. This is a test-only change.
# [4.5.0](CodeGenieApp/serverless-express@v4.4.0...v4.5.0) (2021-10-13) ### Features * support both enable/disable attribute for multi value headers on ALB ([#392](CodeGenieApp/serverless-express#392)) ([a5cb5b5](CodeGenieApp/serverless-express@a5cb5b5))
Settings in lambda target group.
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