Packet size for openfire server

Hi

I’m currently evaluating openfire server, in order to write xmpp client for mobile phone, to communicate with openfire.

The requirement is to send packet data from client, which should not exceed 200 bytes.

My question is, is openfire able to handle ‘custom’ packet size, in this case, 200 bytes.

I search through documentation, and I found this :

http://xmpp.org/extensions/xep-0047.html#create

<iq from='romeo@montague.net/orchard'
    id='jn3h8g65'
    to='juliet@capulet.com/balcony'
    type='set'>
  <open xmlns='http://jabber.org/protocol/ibb'
        block-size='4096'
        sid='i781hf64'
        stanza='iq'/>
</iq>

But AFAIK, this is from client side.
Any pointer to the documentation, where it is possible for openfire to handle 200 bytes packet data ?

Thanks in advance,