<html><head></head><body style="background-color: rgb(255, 255, 255); line-height: initial;"> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Hello,</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Various GUIDs and other signatures in SIP exist to link branches, transactions, and dialogs, but none that are uniquely generated per packet. The best you're going to be able to do is to compute a checksum, but even that is no guarantee in a REGISTER flow.</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><span style="font-size: initial; text-align: initial; line-height: initial;"><br></span></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><span style="font-size: initial; text-align: initial; line-height: initial;">--</span></div><div style="font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Alex Balashov | Principal | Evariste Systems LLC<br>303 Perimeter Center North, Suite 300<br>Atlanta, GA 30346<br>United States<br><br>Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)<br>Web: http://www.evaristesys.com/, http://www.csrpswitch.com/<br><br>Sent from my BlackBerry.</div> <table width="100%" style="background-color:white;border-spacing:0px;"> <tbody><tr><td colspan="2" style="font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"> <div style="border-style: solid none none; border-top-color: rgb(181, 196, 223); border-top-width: 1pt; padding: 3pt 0in 0in; font-family: Tahoma, 'BB Alpha Sans', 'Slate Pro'; font-size: 10pt;"> <div><b>From: </b>jay binks</div><div><b>Sent: </b>Tuesday, May 19, 2015 00:47</div><div><b>To: </b>Kamailio (SER) - Users Mailing List</div><div><b>Reply To: </b>Kamailio (SER) - Users Mailing List</div><div><b>Subject: </b>[SR-Users] SIP Packet identifier</div></div></td></tr></tbody></table><div style="border-style: solid none none; border-top-color: rgb(186, 188, 209); border-top-width: 1pt; font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"></div><br><div id="_originalContent" style=""><div dir="ltr"><div><div>So im logging lots of information to Syslog to assist our helpdesk in diagnosing customer issues.<br><br></div>Im seeing LOTS of user agents that re-use the sip Call-ID ( especially in registers ).<br></div><div>What im wanting to be able to do is link a log message ( that I log at some point in my dialplan ) to a specific SIP packet ( viewed from voipmonitor, HOMER, wireshark ).<br><br></div><div>I cant REALLY see anything in the SIP to uniquely identify a packet, however if kamailio provided the UDP packet checksum in a pseudo variable then we could combine that with the sip call-id to hopefully do what im after.<br><br></div><div>does anyone else have any ideas about how do what im after ?<br></div><div><div><div><div><div><br>-- <br><div class="gmail_signature">Sincerely<br><br>Jay</div>
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