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Wrong Status code since 2.9.9 with header middleware #9926
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Hello, there are no changes related to middleware between v2.9.8 and v2.9.9 v2.9.8...v2.9.9 The only variation that I can see is the Go version, it can be related to 1xx support. |
We experience the exact same issue, especially with .NET http clients which send the |
Hello, Thanks. spec:
headers:
customRequestHeaders:
Expect: ""
.... Couldn't this also be related to #9750 ? |
No, this PR is about an error message inside the buffer middleware |
It also includes a bump of net package. But let's forgot it if it's not relevant. |
Closed by #9938. |
Welcome!
What did you do?
Since our last upgrade of traefik in 2.10.1, we saw an increase in http 401 response on some of our backends, but not on traefik side.
What did you see instead?
After some investigation :
This occurs when all those conditions are met :
I'll post below the minimal setup I used to reproduce. (On the backend side I juste used a go backend, 1.20.4, which just store the uploaded file and return a http 201.)
What version of Traefik are you using?
What is your environment & configuration?
traefik.yaml :
dynamic.yaml :
If applicable, please paste the log output in DEBUG level
Traefik 2.9.9, headers middleware ON :
accesslog :
Traefik 2.9.9, headers middleware OFF :
accesslog :
Traefik 2.9.8, headers middleware ON :
accesslog :
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