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  <title>The SOAP Monitor Module</title>
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<h1>Using the SOAP Monitor</h1>

<p>Web service developers often want to see the SOAP messages that are being
used to invoke the Web services, along with the results of those messages.
The goal of the SOAP Monitor utility is to provide a way for the developers
to monitor these SOAP messages without requiring any special configuration or
restarting the server.</p>

<p>In this utility, a handler has been written and added to the global
handler chain. As SOAP requests and responses are received, the SOAP message
information is forwarded to a SOAP monitor service where it can be displayed
using a Web browser interface. The SOAP message information is accessed by a
Web browser by going to http://localhost:8080/axis2/SOAPMonitor (where 8080
is the port number where the application server is running). The SOAP message
information is displayed through a Web browser by using an applet that opens
a socket connection to the SOAP monitor service. This applet requires a Java
plug-in 1.3 or higher to be installed in your browser. If you do not have a
correct plug-in, the browser will prompt you to install one. The port used by
the SOAP monitor service to communicate with applets is configurable. Edit
the web.xml file to change the port used by the Axis2 Web application.</p>

<p>The SOAP Monitor module (soapmonitor.mar) is available in the axis2.war
but it is not engaged by default. The SOAP Monitor is NOT enabled by default
for security reasons.</p>

<p>The SOAP Monitor can be engaged by inserting the following in the
axis2.xml file.</p>
<pre>   &lt;module ref="soapmonitor"/&gt;</pre>
<p>In the axis2.xml file, define your phase orders for the 'soapmonitorPhase'
referenced in the module.xml of soapmonitor.mars. Below is an example which
should NOT be copied exactly, since the default phases change occasionally.
The important point here is that 'soapmonitorPhase' should be placed under
the 'user can add his own phases to this area' comment in the 'inflow',
'outflow', 'INfaultflow', and 'Outfaultflow' sections.</p>
<pre>    &lt;phaseOrder type="inflow"&gt;
        &lt;!--System pre defined phases--&gt;
        &lt;phase name="TransportIn"/&gt;
        &lt;phase name="PreDispatch"/&gt;
        &lt;phase name="Dispatch" class="org.apache.axis2.engine.DispatchPhase"&gt;
            &lt;handler name="AddressingBasedDispatcher"
                     class="org.apache.axis2.dispatchers.AddressingBasedDispatcher"&gt;
                &lt;order phase="Dispatch"/&gt;
            &lt;/handler&gt;
            &lt;handler name="RequestURIBasedDispatcher"
                     class="org.apache.axis2.dispatchers.RequestURIBasedDispatcher"&gt;
                &lt;order phase="Dispatch"/&gt;
            &lt;/handler&gt;
            &lt;handler name="SOAPActionBasedDispatcher"
                     class="org.apache.axis2.dispatchers.SOAPActionBasedDispatcher"&gt;
                &lt;order phase="Dispatch"/&gt;
            &lt;/handler&gt;
            &lt;handler name="SOAPMessageBodyBasedDispatcher"
                     class="org.apache.axis2.dispatchers.SOAPMessageBodyBasedDispatcher"&gt;
                &lt;order phase="Dispatch"/&gt;
            &lt;/handler&gt;
            &lt;handler name="InstanceDispatcher"
                     class="org.apache.axis2.engine.InstanceDispatcher"&gt;
                &lt;order phase="PostDispatch"/&gt;
            &lt;/handler&gt;
        &lt;/phase&gt;
        &lt;!--System pre defined phases--&gt;
        &lt;!--After Postdispatch phase module author or or service author can add any phase he want--&gt;
        &lt;phase name="userphase1"/&gt;
        &lt;phase name="soapmonitorPhase"/&gt;
    &lt;/phaseOrder&gt;
    &lt;phaseOrder type="outflow"&gt;
        &lt;!--user can add his own phases to this area--&gt;
        &lt;phase name="userphase1"/&gt;
        &lt;phase name="soapmonitorPhase"/&gt;
        &lt;!--system predefined phase--&gt;
        &lt;!--these phase will run irrespective of the service--&gt;
        &lt;phase name="PolicyDetermination"/&gt;
        &lt;phase name="MessageOut"/&gt;
    &lt;/phaseOrder&gt;
    &lt;phaseOrder type="INfaultflow"&gt;
        &lt;!--user can add his own phases to this area--&gt;
        &lt;phase name="userphase1"/&gt;
        &lt;phase name="soapmonitorPhase"/&gt;
    &lt;/phaseOrder&gt;
    &lt;phaseOrder type="Outfaultflow"&gt;
        &lt;!--user can add his own phases to this area--&gt;
        &lt;phase name="userphase1"/&gt;
        &lt;phase name="soapmonitorPhase"/&gt;
        &lt;phase name="PolicyDetermination"/&gt;
        &lt;phase name="MessageOut"/&gt;
    &lt;/phaseOrder&gt;</pre>

<p>To configure the servlet to communicate with the applet, add the following
code to the web.xml (The SOAPMonitorPort is configurable.):</p>
<pre>    &lt;servlet&gt;
       &lt;servlet-name&gt;SOAPMonitorService&lt;/servlet-name&gt;
       &lt;display-name&gt;SOAPMonitorService&lt;/display-name&gt;
       &lt;servlet-class&gt;
         org.apache.axis2.soapmonitor.servlet.SOAPMonitorService
       &lt;/servlet-class&gt;
       &lt;init-param&gt;
          &lt;param-name&gt;SOAPMonitorPort&lt;/param-name&gt;
          &lt;param-value&gt;5001&lt;/param-value&gt;
       &lt;/init-param&gt;
       &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
    &lt;/servlet&gt;

    &lt;servlet-mapping&gt;
        &lt;servlet-name&gt;SOAPMonitorService&lt;/servlet-name&gt;
        &lt;url-pattern&gt;/SOAPMonitor&lt;/url-pattern&gt;
    &lt;/servlet-mapping&gt;</pre>

<p>Finally, the applet classes must be placed into the Web application so that
they can be loaded by the Web browser. You can get the compiled applet
classes from the WEB-INF/lib/axis2-soapmonitor-servlet-${axis2_version}.jar which is inside
the extracted axis2.war. To extract the content of the file, simply
execute the command, <code>jar -xf axis2-soapmonitor-servlet-${axis2_version}.jar</code>.
The applet code is in the org.apache.axis2.soapmonitor.applet package and therefore 
the 'org' directory created by the unpacking of JAR file should be placed
in &lt;CATALINA_HOME&gt;/webapps/axis2/.</p>

<p>Using a Web browser, go to http[s]://host[:port][/webapp]/SOAPMonitor
(e.g.http://localhost:8080/axis2/SOAPMonitor) substituting the correct values
for your Web application. This will show the SOAP Monitor applet used to view
the service requests and responses. Any requests to services that have been
configured and deployed correctly should show up in the applet.</p>

<p>The SOAPMonitor with attachments currently serializes themselves as base64
characters. It is therefore recommended to use the TCPMon tool to correctly
capture MTOM and SWA messages as an multipart mime where the binary data is
an attachment.</p>
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