Updates this with the information from msg
and auth_header
, possibly
un-authenticating it.
As with [[email protected]], this is normally only used by [class@Session].
this |
a Auth |
msg |
the Message this is being updated for |
auth_header |
the WWW-Authenticate/Proxy-Authenticate header |
true if this is still a valid (but potentially unauthenticated
) Auth. false if something about |