webdav address is incorrect when using reverse proxy

[xiaotupansy]

Steps to reproduce

1.set up nextcloud internally
2.use iis as reverse proxy for ssl issue
3.check the host of visit url and webdav url

Expected behaviour

host of visit url and webdav url should be equal

Actual behaviour

see screenshot

Server configuration

**Nextcloud version:13.0.5 , fresh install

NOTE:
same issue for log out

[nextcloud-bot]

GitMate.io thinks possibly related issues are #3738 (Webdav), #5829 (webdav showing http url, instead of https, reverse proxy freenas), #2573 (WebDAV not working if running webserver and reverse proxy in ports different from standard), #3628 (Cannot upload files using webdav extension.), and #3155 (Wrong Logout URL with Apache Reverse proxy).

[MorrisJobke]

Please have a look at the reverse proxy documentation at https://docs.nextcloud.com/server/13/admin_manual/configuration_server/reverse_proxy_configuration.html

As this seems to be a setup issue I would like to ask you to raise your further questions in the forums: https://help.nextcloud.com

If you wish support with setup issues from Nextcloud GmbH we offer this as part of the Nextcloud subscription. Learn more about this at https://nextcloud.com/enterprise/