Connection to owncloud fails about webdavclient HOT 1 CLOSED

Hi Peter,

I think this is the standard behavior of HttpClient, see Why would HTTP client only send authentication headers once an unauthenticated request was rejected?.

The PreAuthenticate property only tells HttpClient to set the Authorization header after the first request. See HttpClientHandler.PreAuthenticate Property.

With the exception of the first request, the PreAuthenticate property indicates whether to send authentication information with subsequent requests to a Uri that matches the specific Uri up to the last forward slash without waiting to be challenged by the server.

I don't know why the standard challenge-response authentication doesn't work in your case but the workaround with setting the Authentication header explicitly is the only way to avoid a challenge response from the server.

Regards,
Sergey

from webdavclient.