A tsung XML file to benchmark Socket.IO servers.

tsung.xml

<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "/opt/local/share/tsung/tsung-1.0.dtd" []>
<tsung loglevel="notice" version="1.0" dumptraffic="true">

  <!-- Each client that will be running Tsung during the test -->
  <clients>
    <client host="localhost" use_controller_vm="true" maxusers="1000" />
  </clients>

  <!-- Each remote server that Tsung should performance test against. Only one would be needed if you have a load balancer. -->
  <servers>
    <server host="cam.oae.com" port="80" type="tcp" />
  </servers>

  <!-- Describe how load will be ramped up to your application over time -->
  <load>
    <arrivalphase phase="1" duration="120" unit="second">
      <users arrivalrate="4" unit="second" />
    </arrivalphase>
  </load>

  <!-- Additional testing options -->
  <options>
    <option name="websocket_path" value="/socket.io/1/websocket"/>

    <!-- How to distribute user-agents among Tsung sessions -->
    <option type="ts_http" name="user_agent">
      <user_agent probability="80">Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050513 Galeon/1.3.21</user_agent>
      <user_agent probability="20">Mozilla/5.0 (Windows; U; Windows NT 5.2; fr-FR; rv:1.7.8) Gecko/20050511 Firefox/1.0.4</user_agent>
    </option> 
  </options>

  <sessions>
    <session name="activity_browse" probability="100" type="ts_http">
        <!--
           Perform a handshake with Socket.IO.
           This will return an ID which will uniquely identify this socket with Socket.IO
         -->
        <request>
            <dyn_variable name="websocket_session_id" re="(.*):60:60:websocket,htmlfile,xhr-polling,jsonp-polling" />
            <http url="/socket.io/1/" method="POST" version="1.1" contents=""></http>
        </request>

        <!-- We need to change the session type to websocket -->
        <change_type new_type="ts_websocket" host="cam.oae.com" port="80" server_type="tcp" restore="true" store="true"/>

        <!-- Try to connect on a websocket -->
        <!-- See https://github.com/LearnBoost/socket.io-spec for more information -->
        <request subst="true">
             <websocket type="connect" path="/socket.io/1/websocket/%%_websocket_session_id%%"></websocket>
        </request>
        <request>
            <websocket type="message">1::</websocket>
        </request>

        <!-- Do nothing for up to 5 seconds -->
        <thinktime value="5" random="true"/>

        <!-- State that we are interested in notifications (this is application specific).-->
        <request>
            <websocket type="message">4:1::{"name":"register-for-feed","args":{"feed": "oae.notifications", "resourceId": "u:cam:eVA584ZTI5", "signature": {"signature": "", "exipires":  ""}}}</websocket>
        </request>

        <!-- Do nothing for up to 5 seconds -->
        <thinktime value="5" random="true"/>

        <!-- Close the socket -->
        <request>
            <websocket type="close"></websocket>
        </request>
    </session>
  </sessions>
</tsung>