Hi all (please excuse the crosspost but I can't find an HTTP group as such)

I am trying to find out the difference between persistent cookies and
session cookies. I have found plenty of documentation saying what the
differences are from the user point of view, but I want to know how the
server and browser distinguish between the two types in terms of HTTP
protocol.

I have read RFC 2965 and the Java servlet programming documentation and I
can't find any information as to how I should specify (or detect) whether a
specific cookie is persistent or session.

Any clues please?

Andy