[jetty-users] Oort

[Dustin Whitney <dustin.whitney@xxxxxxxxx>]

Hey,

    I'm adding this here for Nabble in case someone runs into the same problem I did, they can search for it:  something that kinda took me off guard when trying to setup Oort:  for the init-param oort.url I used http://localhost:8080/cometd and had this running on two separate machines.   The two would handshake but never exchange messages.  After fiddling with the web.xml for a while I figured out that the oort.url should specifically refer to the machine the servlet is running off of by a name other than localhost -  So if the IP address of one machine is 192.168.1.2, your best bet is using the oort.url http://192.168.1.2:8080/cometd (assuming port 8080 and that your cometd servlet is mapped to /cometd), and if the other machine is 192.168.1.3 its oort.url should be http://192.168.1.3:8080/cometd.  In fact, here are my two web.xmls.  The first is from a machine I call molecule and the second is from a machine I call atom (their IP addresses are configured in my hosts file):

molecule: web.xml

<?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.mortbay.cometd.continuation.ContinuationCometdServlet</servlet-class>
        <init-param>
            <param-name>timeout</param-name>
            <param-value>60000</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet>
        <servlet-name>oortServlet</servlet-name>
        <servlet-class>org.cometd.oort.OortServlet</servlet-class>
        <init-param>
                <param-name>oort.url</param-name>
                <param-value>http://molecule:8080/cometd</param-value>
        </init-param>
        <init-param>
                <param-name>oort.cloud</param-name>
                <param-value>http://atom:8080/cometd</param-value>
        </init-param>
        <init-param>
                <param-name>oort.channels</param-name>
                <param-value>/chat/**</param-value>
        </init-param>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>cometd</servlet-name>
        <url-pattern>/cometd/*</url-pattern>
    </servlet-mapping>
</web-app>

atom: web.xml

<?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.mortbay.cometd.continuation.ContinuationCometdServlet</servlet-class>
        <init-param>
            <param-name>timeout</param-name>
            <param-value>60000</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet>
        <servlet-name>oortServlet</servlet-name>
        <servlet-class>org.cometd.oort.OortServlet</servlet-class>
        <init-param>
                <param-name>oort.url</param-name>
                <param-value>http://atom:8080/cometd</param-value>
        </init-param>
        <init-param>
                <param-name>oort.cloud</param-name>
                <param-value>http://molecule:8080/cometd</param-value>
        </init-param>
        <init-param>
                <param-name>oort.channels</param-name>
                <param-value>/chat/**</param-value>
        </init-param>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>cometd</servlet-name>
        <url-pattern>/cometd/*</url-pattern>
    </servlet-mapping>
</web-app>