feat(proxy/pdk) add support for X-Forwarded-Prefix #5620
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You are right, but Github also has ignore whitespace when reviewing: |
kikito
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erikgb
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Anything more I can do to get this merged? I have reviewed the code, and I think it looks good. @kikito has requested changes, but I am not sure what changes are actually required. |
### Summary Kong currently adds these headers to upstream request: ``` X-Forwarded-For X-Forwarded-Port X-Forwarded-Proto X-Forwarded-Host X-Real-IP ``` @erikgb mentioned that he would like to have `X-Forwarded-Prefix` added on #5602. This PR adds that, and additionally introduces a new PDK function: ```lua local path = kong.request.get_forwarded_path() ``` ### Issues Resolved Close #5602
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### Summary The PR #5620 implemented `X-Forwarded-Prefix` wrong. The implementation looks more like proprietary `X-Forwarded-Path`. This commit changes that accordingly. Next commit in this PR will re-introduce X-Forwarded-Prefix correctly. I decided to keep the current behavior as it is already used in some code with PDK `kong.request.get_forwarded_path` (e.g. if the plugin needs to get the original request path, the one that is perhaps rewritten by Kong or a proxy before Kong, perhaps Kong as well).
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…warded_prefix ### Summary The PR #5620 implemented `X-Forwarded-Prefix` wrong as reported in these: - #6190 - Kong/kubernetes-ingress-controller#784 - #6132 And also by some other sources. This commit re-implements `X-Forwarded-Prefix`: 1. Is there trusted `X-Forwarded-Prefix` header in request? If yes, then set that as the `X-Forwarded-Prefix` (note: at this point we don't support multi-value `X-Forwarded-Prefix` headers, e.g. appending. We don't support multi-value in `X-Forwarded-Host/-Port/-Proto` either. 2. Has Kong router stripped the prefix of the request URI before proxying, if yes, then set `X-Forwarded-Prefix` to match the stripped prefix. 3. If 1 or 2 didn't set the header, set it to `/`. ### Issues Resolved Fix #6190 Fix Kong/kubernetes-ingress-controller#784 Fix #6132
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Summary
Kong currently adds these headers to upstream request:
@erikgb mentioned that he would like to have
X-Forwarded-Prefixadded on #5602.
This PR adds that, and additionally introduces a new PDK function:
Issues Resolved
Close #5602