On Vaadin 7.1.15 I get this:
Avertissement: Failed using comet support: org.atmosphere.container.Tomcat7AsyncSupportWithWebSocket, 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 Is the Nio or Apr Connector enabled?
Mai 16, 2014 8:01:43 AM org.atmosphere.cpr.AtmosphereFramework doCometSupport
Avertissement: Using org.atmosphere.container.Tomcat7BIOSupportWithWebSocket
But I am using Nio connector on Tomcat 7.0.52. Do I need to configure anything else?