<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000'>Hi,<div><br></div><div>does anyone have any ideas on this issue ?</div><div>I'm using opensips 1.11 by the way.</div><div><br></div><div>Many thanks,</div><div>Giuseppe<br><div><div></div><span name="x"></span><br></div><hr id="zwchr"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>Da: </b>"Giuseppe Cardone" <g.cardone@unidata.it><br><b>A: </b>"OpenSIPS users mailling list" <users@lists.opensips.org><br><b>Inviato: </b>Sabato, 9 agosto 2014 18:39:42<br><b>Oggetto: </b>b2b module issue with PRACK on multiple provisional responses<br><br><style>p { margin: 0; }</style><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div><div>Hi,<br><br></div>I'm trying out the b2b module on opensips and have encountered an issue regarding PRACK.<br><br></div><div>In
particular I have a scenario where the called number replies with a 183
session progress (Require: 100rel and RSeq: 1) and then a few seconds
later with a 180 Ringing (Require: 100rel and RSeq: 2).<br><br></div><div>What
happens is that opensips correctly replies with a PRACK to the 183
response but then doesn't do the same when it receives the 180
provisional response.<br><br></div><div>Excerpts from the logs show this happening when the 183 message is received:<br><br>Aug 9 17:31:14 [2528] DBG:b2b_entities:b2b_tm_cback: Found require hdr<br>Aug 9 17:31:14 [2528] DBG:b2b_entities:b2b_tm_cback: Found 100rel header<br>Aug 9 17:31:14 [2528] DBG:b2b_entities:b2b_send_req: start type=1<br><br></div><div>but when the 180 response arrives, there are no similar entries.<br><br>It is my understanding that from a SIP signalling point of view the b2b module should reply with a PRACK to the 180 response too or am I missing something ?<br><br></div><div>Any ideas as to why this may be happening or could it be a bug ?<br><br></div><div>Many thanks,<br></div>Giuseppe<br></div></blockquote><br></div></div></body></html>