XML response of the server to the client
<protocol>
<response action="roomList" errorCode="0" [sid="6"]>
<data roomCount="3">
<room name="room1" category="cinema" content="new movies" language="en"/>
<room name="room2" category="literature" content="new titles" language="en"/>
<room name="room3" category="science" content="science news" language="en"/>
</data>
</response>
</protocol>