ErraiServlet definition

web.xml

<servlet>
    <servlet-name>ErraiServlet</servlet-name>
	<servlet-class>org.jboss.errai.bus.server.servlet.DefaultBlockingServlet</servlet-class>
    <init-param>
	<param-name>auto-discover-services</param-name>
        <param-value>true</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>ErraiServlet</servlet-name>
    <url-pattern>*.erraiBus</url-pattern>
</servlet-mapping>