Issue 155 in sipservlets: java.lang.NullPointerException org.mobicents.servlet.sip.ctf.core.extension.SipServletsEntryPoint how to solve,thanks

[sipservlets]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium Component-Sip-Servlets MSS-2.0.0.FINAL  
Roadmap-Fix

New issue 155 by zhouhong...@gmail.com: java.lang.NullPointerException  
org.mobicents.servlet.sip.ctf.core.extension.SipServletsEntryPoint  how to  
solve,thanks
http://code.google.com/p/sipservlets/issues/detail?id=155

What steps will reproduce the problem?
1.mss1.7+tomcat7.0.28
2.ctf-core-1.0.0-SNAPSHOT.jar,ctf-core-extension-1.0.0-SNAPSHOT.jar,weld-servlet-1.1.2.Final.jar
3.SIP PHONE register, this exception happen

What is the expected output? What do you see instead?

java.lang.NullPointerException
	at  
org.mobicents.servlet.sip.ctf.core.extension.SipServletsEntryPoint.propagateSessions(SipServletsEntryPoint.java:216)
	at  
org.mobicents.servlet.sip.ctf.core.extension.SipServletsEntryPoint.doRequest(SipServletsEntryPoint.java:80)
        at javax.servlet.sip.SipServlet.service(SipServlet.java:328)
What version of the product are you using? On what operating system?


Please provide any additional information below.