WebDAV: PROPPATCH lastmodified instead of getlastmodified

Hello.

WinSCP uses property "getlastmodified" with PROPPATCH method to modify mtime of a file on a WebDAV storage. It is incorrect. "getlastmodified" is read only and should be used with PROPFIND only. "lastmodified" property should be used with PROPPATCH instead: https://github.com/owncloud/core/issues/19737 Please, fix the problem.

Well, I'm aware of that, as you probably know from the discussions on owncloud repository.

Do you know of any server that actually supports setting "lastmodified"?
It looks like owncloud still does not support it, as per your own post at:
https://github.com/owncloud/core/issues/33502#issuecomment-520416410
Or does it?

You are right. This is my post on ownCloud repository. Nor lastmodified nor getlastmodified does not work with ownCloud actually. It seems that there is a bug in ownCloud around PROPPATCH+lastmodified. It responses "HTTP/1.1 200 OK" but mtime of a file is not changed actually. I do not use any other WebDAV server. So I don't know how lastmodified property is well supported.

I do not know any WebDAV server that does support "lastmodified" either. On the contrary there is a server that does support "getlastmodified". That's why WinSCP uses it.

Once there's any server that correctly supports "lastmodified", I'm happy to change WinSCP behavior.

Well, it seems to me that it is good idea to add an option to WinSCP to change its behavior between "getlastmodified" and "lastmodified".

dansoftware wrote:

Well, it seems to me that it is good idea to add an option to WinSCP to change its behavior between "getlastmodified" and "lastmodified".

Do you have any reference for use of "lastmodified"?

martin wrote:

Do you have any reference for use of "lastmodified"?

No, except ownCloud.

Here is how the problem is solved in another WebDAV software:
<invalid hyperlink removed by admin>

dansoftware wrote:

No, except ownCloud.

But they do not support it either, right?