I am using WCF to a soap endpoint using security mode \"TransportWithMessageCredential\".
The WCF client/server uses SCT (Security Context Token) to maintain a secur
Take a look at this post where you can download a proxy wrapper that does a retry when the session expires.
http://www.dasblonde.net/2008/04/24/MyProxyWrapperAndTheEVILSUOFile.aspx