Tomcat 7.0.55 + Spring + Granite 3.0.0.M2 --- Asynchronous requests are not supported with servlet

[Neville Sequeira]

I have searched this forum and am unfortunately getting non definitive answers.

Using Tomcat 7.0.55 + Spring + Granite 3.0.0.M2 and getting the following exception. Ability to push from server to client is very critical for us. Was working fine when we were using JBoss and org.granite.gravity.jbossweb.GravityJBossWebServlet

Jan 15, 2015 7:11:46 PM org.apache.catalina.core.StandardWrapperValve invoke

SEVERE: Servlet.service() for servlet [GravityServlet] in context with path [/casenet-server] threw exception [Asynchron

ous requests are not supported with this servlet. Please check your web.xml] with root cause

javax.servlet.ServletException: Asynchronous requests are not supported with this servlet. Please check your web.xml

        at org.granite.gravity.servlet3.GravityAsyncServlet.doPost(GravityAsyncServlet.java:69)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

        at com.casenet.aspect.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:90)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)

        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)

        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)

        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)

        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)

        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)

        at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2440)

        at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2429)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

        at java.lang.Thread.run(Thread.java:745)

I do have the following in web.xml

<servlet>

<servlet-name>GravityServlet</servlet-name>

<servlet-class>org.granite.gravity.servlet3.GravityAsyncServlet</servlet-class>

<async-supported>true</async-supported>

</servlet>

I also have usage of Spring filter in web.xml - for purpose of security and some of our own aspects set up as filters too.

[Neville Sequeira]

Figured out.

Added to following to each <Filter> and each <Serlvet> section i nweb.xml

<async-supported>true</async-supported>