Sessions/Cookies with WSClient in WSDL Mode

Hello,

I am trying to find out if there is a way to retain session cookies when using WSClient (specifically in WSDL mode).

I connect to a vendor's web service that uses a session-based authentication method. Unfortunately, even though my initial login() method call is successful, any other methods I call throw an exception because the information it needs is not available in the session.

I am able to get this working using the built-in PHP SOAP functions, but I need to make some calls that depend on file attachments, which was why I was hoping WSF/PHP could do what I needed. Any suggestions would be appreciated!

Below is the an example of what I'm trying to do:

------
$login_parameters = array(
'username' => MYUSER,
'password' => MYPASS
);

$client = new WSClient( array(
"wsdl" => "http://ws1.responsys.net/webservices/ResponsysWS?WSDL",
"to" => "http://ws1.responsys.net/webservices/ResponsysWS",
));

$proxy = $client->getProxy();

$proxy->login( $login_parameters );
$proxy->listFolders();
------

The login() call returns true, but the listFolders() method throws an exception:

Fatal error: Uncaught WS FAULT exception: [soapenv:Server.userException] java.rmi.RemoteException: RIAccount object is not available in session