Appconfiguration: x-ms-useragent is no longer being accepted by appconfig (customer reported)

[richardpark-msft]

A customer has reported an issue where appconfig is no longer accepting the x-ms-useragent header. This prevents users from using appconfig in the browser.

This was fixed in #217 but appears to have regressed and is missing again. I see this list of headers when doing an OPTIONS request against my own appconfig server (x-ms-useragent is not present):

$ curl -XOPTIONS -vv https://[app config server].azconfig.io

Headers:

< Access-Control-Allow-Headers: DNT, X-CustomHeader, Keep-Alive, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Authorization, x-ms-client-request-id, x-ms-content-sha256, x-ms-date, host, Accept, Accept-Datetime, Date, If-Match, If-None-Match, Sync-Token, x-ms-return-client-request-id, ETag, Last-Modified, Link, Memento-Datetime, x-ms-retry-after, x-ms-request-id, WWW-Authenticate

Customer issue: https://github.com/Azure/azure-sdk-for-js/issues/7529

[zhenlan]

This could be a regression due to recent changes for VNET support. We will fix it.

cc: @MSGaryWang

[edmclinn]

Any idea on when this will be corrected? I would like to give an update to management on when this feature will be available again.

[zhenlan]

The next train of deployment will be next week, so by the end of next week, I hope the fix can be deployed to all regions if everything goes smoothly.

[edmclinn]

Are we still on track of this being deployed this week?

[alexgman]

Yes

On Mon, Mar 9, 2020 at 9:22 AM edmclinn [e-mail] wrote:

Are we still on track of this being deployed this week?

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[zhenlan]

The deployment has completed for all regions. This should work now.