websocket.xml

<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "tsung-1.0.dtd">
<tsung loglevel="notice">

  <!-- generate the load on localhost -->
  <clients>
    <client host="localhost" use_controller_vm="true" maxusers="800"/>
  </clients>

  <!-- the target server is running on the same machine and uses SSL -->
  <servers>
    <server host="127.0.0.1" port="8080" type="ssl"/>
  </servers>

  <!-- gather OS statistics from the host -->
  <monitoring>
    <monitor host="localhost"/>
  </monitoring>

  <load>
    <!-- first, a steady stream of new users -->
    <arrivalphase phase="1" duration="3" unit="minute">
      <users arrivalrate="1" unit="second"></users>
    </arrivalphase>

    <!-- then it gets interesting -->
    <arrivalphase phase="2" duration="3" unit="minute">
      <users arrivalrate="5" unit="second"></users>
    </arrivalphase>

    <!-- and ends up in an avalanche -->
    <arrivalphase phase="3" duration="3" unit="minute">
      <users arrivalrate="10" unit="second"></users>
    </arrivalphase>
  </load>

  <!--
      here we define three types of sessions, where the user:
      * does a simple 2+3 calculation
      * does two calculations in parallel
      * computes a very large number and stays connected for a long time after that
  -->
  <sessions>

    <!-- connect and calculate 2 + 3 -->
    <session probability="60" name="simple_sum" type="ts_websocket">

      <request>
        <websocket type="connect" origin="https://127.0.0.1/" url="/ws"/>
      </request>

      <request>
        <!-- capture the returned UUID -->
        <dyn_variable name="uuid" jsonpath="uuid"/>
        <websocket type="send">{"msg": "uuid"}</websocket>
      </request>

      <!-- the push requests are no_ack, because we don't expect anything in return (not how we include the previously captured UUID) -->
      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 2, "uuid": "%%_uuid%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 3, "uuid": "%%_uuid%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": "+", "uuid": "%%_uuid%%"}</websocket>
      </request>

      <!-- calculate the result and check if it's correct -->
      <request subst="true">
        <match do="log" when="nomatch">{"result": 5.0}</match>
        <websocket type="send">{"msg": "compute", "uuid": "%%_uuid%%"}</websocket>
      </request>

      <!-- stay connected, pinging the server every now and then -->
      <for var="i" from="1" to="10" incr="1">

        <thinktime value="10"/>

        <request>
          <websocket type="ping">PING</websocket>
        </request>

      </for>

      <request>
        <websocket type="close"/>
      </request>

    </session>

    <!-- run two calculations in parallel -->
    <session probability="20" name="interleave_sessions" type="ts_websocket">

      <request>
        <websocket type="connect" url="/ws"/>
      </request>

      <!-- proceed to request two UUIDs, prepare two stacks and compute them both -->

      <request>
        <dyn_variable name="uuid1" jsonpath="uuid"/>
        <websocket type="send">{"msg": "uuid"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 5, "uuid": "%%_uuid1%%"}</websocket>
      </request>

      <request>
        <dyn_variable name="uuid2" jsonpath="uuid"/>
        <websocket type="send">{"msg": "uuid"}</websocket>
      </request>

      <thinktime value="1"/>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 8, "uuid": "%%_uuid2%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 2, "uuid": "%%_uuid1%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 2, "uuid": "%%_uuid2%%"}</websocket>
      </request>

      <thinktime value="1"/>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": "*", "uuid": "%%_uuid1%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": "*", "uuid": "%%_uuid2%%"}</websocket>
      </request>

      <request subst="true">
        <match do="log" when="nomatch">{"result": 10.0}</match>
        <websocket type="send">{"msg": "compute", "uuid": "%%_uuid1%%"}</websocket>
      </request>

      <request subst="true">
        <match do="log" when="nomatch">{"result": 16.0}</match>
        <websocket type="send">{"msg": "compute", "uuid": "%%_uuid2%%"}</websocket>
      </request>

      <request>
        <websocket type="close"/>
      </request>

    </session>

    <!-- calculate a large number -->
    <session probability="20" name="large_number" type="ts_websocket">

      <request>
        <websocket type="connect" url="/ws"/>
      </request>

      <request>
        <dyn_variable name="uuid" jsonpath="uuid"/>
        <websocket type="send">{"msg": "uuid"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 32, "uuid": "%%_uuid%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": 32, "uuid": "%%_uuid%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send" ack="no_ack">{"msg": "push", "token": "**", "uuid": "%%_uuid%%"}</websocket>
      </request>

      <request subst="true">
        <websocket type="send">{"msg": "compute", "uuid": "%%_uuid%%"}</websocket>
      </request>

      <request>
        <websocket type="close"/>
      </request>

    </session>

  </sessions>
</tsung>