[Nusoap-general] how can I keep a Webservice consumer logged in?

[Nikos S. <ska...@gm...>]

Hi, I'm really really new with those stuff

I'm trying to create a webservice that will actually be an layer for
accessing a database.
The webservice may have a lot of functions (methods).

I want to have a login function in the webservice that actually matches a
username/password from the database,
and then the client (consumer) can use all the other functions of the
webservice without having to login every single time.
On the otherhand every function should check if the client is logged in.

How can I do that with unsoap?
I cannot use cookies and global variable do not keep their values. (can I?)