<div>Hi</div><div><br></div><div>Using opensips 1.6 we need to have the presence module to send NOTIFY over TCP rather than UDP when the size of the message is greater than a given MTU.</div><div><br></div><div>We tried to force it sending a SUBSCRIBE with transport=tcp in Contact header:</div>
<div><br></div><blockquote class="webkit-indent-blockquote" style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><div>SUBSCRIBE <a href="mailto:sip%3Aecho123@presence.net">sip:echo123@presence.net</a> SIP/2.0</div>
</div><div><div>[...]</div></div><div><div>Contact: <sip:albertd@10.1.1.24:5233;transport=tcp></div></div><div><div>Event: presence</div></div></blockquote><div><div><br></div><div>but the NOTIFY messages are sent over UDP (observe the "transport=tcp" in the request line):</div>
<div><br></div></div><blockquote class="webkit-indent-blockquote" style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><div><div>NOTIFY sip:albertd@10.1.1.24:5233;transport=tcp SIP/2.0</div></div></div><div><div>
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[...]</div></div></div><div><div><div>Contact: <<a href="http://sip:sa@213.151.105.170:6667">sip:sa@213.151.105.170:6667</a>></div></div></div><div><div><div>Subscription-State: active;expires=120</div></div></div>
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<div><div>Content-Type: application/pidf+xml</div><div><div>Content-Length: 1254</div></div></div></div></blockquote><div><div><div><br></div><div>Could you please let me know what we should do to enable the sending over TCP ? I don't understand what we're doing wrong.</div>
<div><br></div><div>Cheers</div><div>Pascal</div></div></div>