ServerPush on Tomcat 7.0.22 vs 6.0.33

I am using this add on. It works fine on Tomcat 6.0.33 but gives the following error on Tomcat 7.0.22

WARNING: failed using comet support: org.atmosphere.container.TomcatCometSupport, error: Tomcat failed to detect this is a Comet application because context.xml is missing or the Http11NioProtocol Connector is not enabled.
If that’s not the case, you can also remove META-INF/context.xml and WEB-INF/lib/atmosphere-compat-tomcat.jar

And it falls back to Blocking IO every time

What extra do I need to do to make it working on Tomcat 7

I dont not change anything just switch to 6.0.33 and it works fine.

More observations:

I noticed that atmosphere-compat-tomcat-0.7.2 contains the package org.apache.catalina how ever for Tomcat 7 it needs org.apache.catalina.comet
So from where do I get the atmosphere-compat-tomcat-0.7.2 jar with org.apache.catalina.comet ?

If I remove atmosphere-compat-tomcat.0.7.2.jar then I get this error
java.lang.ClassNotFoundException: org.apache.catalina.CometProcessor
at org.apache.catalina.loader.WebappClassLoader.loadClass(
at org.apache.catalina.loader.WebappClassLoader.loadClass(
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(
at java.lang.ClassLoader.defineClass(
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(
at org.apache.catalina.loader.WebappClassLoader.findClass(
at org.apache.catalina.loader.WebappClassLoader.loadClass(
at org.apache.catalina.loader.WebappClassLoader.loadClass(
at org.apache.catalina.core.DefaultInstanceManager.loadClass(
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(
at org.apache.catalina.core.DefaultInstanceManager.newInstance(
at org.apache.catalina.core.StandardWrapper.loadServlet(
at org.apache.catalina.core.StandardWrapper.load(
at org.apache.catalina.core.StandardContext.loadOnStartup(
at org.apache.catalina.core.StandardContext$
at org.apache.catalina.core.StandardContext$
at java.util.concurrent.FutureTask$Sync.innerRun(
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(
at java.util.concurrent.ThreadPoolExecutor$

Tomcat 7 has added support for comet :

And it seems to have some bad effect on other comet provider.
The plugin is using atmosphere comet, which has a ticket for that problem :
link to atmosphere VS tomcat 7 ticket

It seems a patch was sent in june :
link to commit message

So hopefully updating atmosphere comet in the plugin (I don’t know if they released since then), recompiling will be enough to have tomcat 7 compatibility.