What servlet and jsp spec does JBoss EAP support?

Issue

• What servlet and jsp spec does EAP 5 and EAP 6 support?
• Do RedHat provide Servlet async support in EAP 5 ?
• We need a supported mechanism to provide Web 3.0 asynchronous servlets. How would we do this in JBoss EAP 5.1.x ?
• We are planning to implement Comet in our application for communication between client and server of a web-based java application built on Struts framework (1.2.9). Please advise whether this can be ported on Jboss EAP
• Can we use servlet 3.0 spec jars on EAP 5?