session id's

Hello, I was wondering whether anyone had dealt with returned asp session id's from a .net server, using one of the php clients. I currently use Nusoap for my client, which does not cater for it. Though I was able to get it working with a few lines (parsing Set-Cookie from the response header, storing it in the client class and sending it with subsequent calls), I thought I would check if this functionality already existed in PEAR:SOAP or PHP-SOAP which might be more mature. Thanks John