JAKERI

Build your own application on Google App Engine.

When developing Firefox extensions using nsIProtocolProxyFilter, then there are no way to find the originating tab for specific request. I know that other extensions (Foxyproxy) have a similar problem.

Does anyone know a solution for this problem?

Until quite recently this feature was hidden in the WebSphere Application server.
You can reach all Subject attributes using ${SubjectXX} where XX is a an specfic attribute such as ${SubjectSERIALNUMBER} or ${SubjectCN}. I think this functionality is available from WebSphere Application Server 5.1.