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ok seems there were a couple of problems to work out here. Firstly the version of jetty I was bundling in my war needed to change. I switched to 7.0.2.v20100331. Secondly I had to change the deployment descriptor

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

    <servlet>
        <servlet-name>cometd</servlet-name>
        <servlet-class>org.cometd.server.continuation.ContinuationCometdServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>cometd</servlet-name>
        <url-pattern>/cometd/*</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>initializer</servlet-name>
        <servlet-class>uk.co.dubit.nexus.comet.BayeuxInitializer</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>

    <filter>
        <filter-name>continuation</filter-name>
        <filter-class>org.eclipse.jetty.continuation.ContinuationFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>continuation</filter-name>
        <url-pattern>/cometd/*</url-pattern>
    </filter-mapping>

</web-app>

And finally there's an extra step in deploying a war to jetty 6.1.24 (which is the version I got the code running on in the end), you have to place an XML descriptor for the war in the contexts/ directory. My descriptor looked like

<?xml version="1.0"  encoding="ISO-8859-1"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd"&gt;
<configure class="org.mortbay.jetty.webapp.WebAppContext">
  <Set name="contextPath">/cometd</Set>
  <Set name="war"><SystemProperty name="jetty.home" default="."/>/webapps/nexus.war</Set>
</configure>

After that my servlet was accessible from the /cometd path listed in this descriptor.

Ceilingfish 2010-05-27 09:01:48

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Problem with cometd and jetty 6 / 7

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