According to [RFC6265 Section 4.1.2.3](http://tools.ietf.org/search/rfc6265#section-4.1.2.3)
>Note that a leading %x2E ("."), if present, is ignored

So when receiving actual cookies from server (not from connector), whether a Domain is set with a leading `.` or not, the cookie is treated as a Domain cookie. AFAICT, the only way to set a host-only cookie is to omit the Domain entirely. Since I didn't want to introduce special handling of connector cookies (as opposed to cookies received directly from server) I think this is why I decided to introduce the "hostOnly" flag (I can't actually recall my reasoning atm).