Use of HTTP If-Modified-Since


I implemented Seafile server for so many years sucessfull but today I have an issue that I can’t solve alone …

My Seafile server is used by an opendata platform . This plateform check if the files have changed since the last download. in order to do that, it requests the seafile server with HTTP header “If-Modified-Since” (and " *If-None-Match" in some applicable cases).

Unfortunalty, in any cases (file changed or file unchanged) the server answer that the file has not been modified by returning a 304 status code.

Perhaps is it a problem with the last update date of a file or something else.

How can we solve this issue ?



Any idea about this issue ?

Thanks a lot