Azure Front door - Modify Custom Header Name Not working

Question

Hi
I would like to modify an existing custom response header name i tried as per documentation but its not working for me.
For every request, i want to set an action on response - rename x-header-1 name to x-header-z with its existing value as its coming from response.
I tried in rule set -
THEN Action | Response header | Operator = Append | | Header name = x-header-z | Header value = %{resp_X_Header_1}
and i tried all the possible values but its showing as it is values like - %{resp_X_Header_1}

Reference: https://learn.microsoft.com/en-us/azure/cdn/cdn-http-variables?toc=%2Fazure%2Ffrontdoor%2FTOC.json

Kindly look on this

Thanks
Komal Singh

Answer 1

@Komal Singh

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

From our discussion, you would like to add a custom Response Header in AFD dynamically based on the value of another custom Response Header from the Origin.

Unfortunately, this feature is only available in Azure Verizon Premium CDN as of now.

The document you have shared also references the same. I did a lab and I was able to get this working.

Currently, AFD server variables don’t support header.

Refer to this for supported server variables in AFD

You can consider using CDN in case you would want to dynamically update a custom header.

Additionally, you can raise this in Azure Feedback Hub

This site is closely monitored by our internal teams that are responsible for building Azure and they will consider this feature in the future releases.

Please let me know if you require additional information, I shall try to address them to the best of my knowledge.

Thanks,

Kapil

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