[jdev] bytestreams and Psi

[Mats Bengtsson]

One of my Coccinella users are using Psi behind a NAT while his friend is not
behind a NAT and when doing filtransfers when the initiator is behind the NAT
have observed two peculiar things:

1) 
<!-- SEND: -->
<iq type="set" to="initiator at amessage.at/Psi" id="aab5a" >
    <query xmlns="http://jabber.org/protocol/bytestreams" mode="tcp" sid="s5b_a4e576bba576d998" >
        <streamhost port="8010" host="172.26.0.2" jid="initiator at amessage.at/Psi" />
	<fast xmlns="http://affinix.com/jabber/stream"/>
    </query>
</iq>

Are they having there own proxy host? Or what does the <fast/> element mean?

2)         
<!-- RECV: -->
<iq from="target at amessage.at/Psi" type="set" id="aac4a" to="initiator at amessage.at/Psi" >
    <query xmlns="http://jabber.org/protocol/bytestreams" mode="tcp" sid="s5b_a4e576bba576d998" >
        <streamhost port="8010" host="62.178.189.170" jid="target at amessage.at/Psi" />
    </query>
</iq>

The target is offering a streamhost ???

Any ideas?   
Mats