ci_sessions cookie is secure connections only?

[eluser]Unknown[/eluser]
Hello,

I an new to CI and I trying to write a simple app that has the usual user registration ritual.

I noticed that when I turn https on, my code works fine (both resistration and login/logout process). But it fails to work with plain http.

After some search I noticed this in ci_session cookie :

Send for: Secure connections only

I don't recall setting anything explicitly to cause this behavior.

I tried to play with the config variables setting

Code:

$config['sess_encrypt_cookie']

and

Code:

$config['sess_use_database']

to all possible true/false combinations but it was no use.

I also did not find anything in the documentation.

I wonder whether employing sessions in CI has to be always over https.