---- request ----
<?xml version="1.0"?>
<methodCall>
<methodName>test.guess</methodName>
<params>
</params>
</methodCall>
---- response ----
<?xml version="1.0"?>
<methodResponse>
  <params>
    <param>
      <array>
        <data>
          <value>
            <string>You guessed</string>
          </value>
          <value>
            <int>42</int>
          </value>
        </data>
      </array>
    </param>
  </params>
</methodResponse>