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<p class="MsoNormal"><span style="font-size:11.0pt">I have had 3 OpenSIPS server crashes in the last week. All were due to segmentation faults. I was not able to capture core dumps; I am configuring that now to catch the next crash.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">My logs leading up to the crash are full of errors from fix_route_dialog() complaining about invalid URIs for sequential requests:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.5pt;font-family:Menlo;color:#2CA221;background:white">Jul 26 19:34:02 [220] ERROR:dialog:fix_route_dialog: Failed to parse SIP uri</span><span style="font-family:"Times New Roman""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.5pt;font-family:Menlo;color:#2CA221;background:white">Jul 26 19:34:02 [220] ERROR:core:parse_uri: bad uri, state 0 parsed: <ip:1> (4) / <ip:10.18.8.18:5060;ftag=gK0448f137;lr;r2=on>> (44)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.5pt;font-family:Menlo;color:#2CA221;background:white">Jul 26 19:11:19 [218] ERROR:dialog:fix_route_dialog: Failed to parse SIP uri</span><span style="font-family:"Times New Roman""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.5pt;font-family:Menlo;color:#2CA221;background:white">Jul 26 19:11:19 [218] ERROR:core:parse_uri: bad uri, state 0 parsed: <b0i2> (4) / <b0i2yjor;transport=udp<sip:10.18.8.17:5060;ftag=7207ce89;lr;r2=on> (65)</span><span style="font-family:"Times New Roman""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.5pt;font-family:Menlo;color:#2CA221;background:white">Jul 26 17:43:19 [220] ERROR:dialog:fix_route_dialog: Failed to parse SIP uri</span><span style="font-family:"Times New Roman""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.5pt;font-family:Menlo;color:#2CA221;background:white">Jul 26 17:43:19 [220] ERROR:core:parse_uri: bad uri, state 0 parsed: <ervi> (4) / <ervice_id6fdbc70f-2438-4726-807c-0d081df4d87> (44)</span><span style="font-family:"Times New Roman""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Many times the “URI” displayed in the error message is actually internal OpenSIPS variables, as in the last error above. When they are from the SIP message, I have verified that the messages themselves are
correctly formatted. This leads me to believe there is memory corruption occurring.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">This all started when I updated my load-balancer servers to use Record-Routing, specifically the “double_rr” mechanism for when multiple interfaces exist. The Record-Routing is occurring on different servers
which have not crashed. Only the servers receiving the Record-Routed messages are experiencing the errors.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Here is a piece of the code processing sequential requests. I am using the topology_hiding() functionality of the Dialog module. Are validate_dialog() and fix_route_dialog() still valid in a topology_hiding
scenario?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">if (t_check_trans())<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> setflag(SEQ_REQUEST);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if (has_totag())<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> loose_route();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if (match_dialog())<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if (!validate_dialog())<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> fix_route_dialog();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if (is_method("BYE"))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> setflag(ACC_FLAG);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> setflag(SEQ_REQUEST);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> else if (!isflagset(SEQ_REQUEST))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if (!is_method("ACK")) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> route(rlog, LV_ERROR, "check_sequential", "Sequential request not matched");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> route(reply_error, "481", "Call Does Not Exist");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> return(EXIT);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I will attempt to get core dumps of future crashes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Ben Newlin<o:p></o:p></span></p>
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