Forum Discussion

Nimbostratus

Jul 22, 2016

How to Allow Underscore in HTTP Header?

Hello All, I am working on the requirement to allow underscores in HTTP headers by default F5 does not allow it. Can anybody let me know what I need to do at the F5 end to allow underscores like...

Cirrus

All you need to do to make this load balance properly is to apply a cookie persistence profile to your virtual server. In the virtual server you can configure it to insert X-Forwarded-For header as the URL requires. You do not need any special headers to achieve what that document describes.

ekaleido

Cirrus

Jul 22, 2016

Underscores in headers are fine by the F5. I've copied a link showing this in a packet capture:

https://devcentral.f5.com/questions/httpheader-insert-cannot-insert-header-with-an-underscore-in-the-name