IIS 7 and Above
URL Rewrite Module
IIS Reverse Proxy for Nextcloud - preserve HTTP_HOST
Re: IIS Reverse Proxy for Nextcloud - preserve HTTP_HOST
May 06, 2019 08:59 AM|Able|LINK
According to your description, I still couldn't understand your requirement.Could you please post more details about what you want to do and what problem you meet?
Else since it is a problem with Nextcloud ,I suggest that you could host this thread to Nextcloud forums.Here is the link, I hope it could help you.