Hi Michael,
thanks a lot for detailed bug report! I will look on it as soon as possible.
Vaclav
On St, bře 26, 2014 at 02:34:56 +0200, Michael Furmur wrote:
> hi community,
>
> i caught sigsegv in case when 200OK arrived after rtp timeout event and
> sems was working with SBC module
>
> (gdb) bt 8
> #0 AmSession::getLocalTag (this=0x0)
> #1 0x00000000004a61a7 in AmB2BMedia::updateStreams
> (this=0x7fffec004950, a_leg=false, local_sdp=..., remote_sdp=...,
> ctrl=ctrl@entry=0x7fffec002fe8)
> #2 0x00000000005007cf in AmB2BSession::onSdpCompleted
> (this=this@entry=0x7fffec002b50, local_sdp=..., remote_sdp=...)
> #3 0x00007ffff41b32f9 in CallLeg::onSdpCompleted
> (this=this@entry=0x7fffec002b50, offer=..., answer=...)
> #4 0x000000000052c181 in AmSipDialog::onSdpCompleted (this=0x7fffec003cf0)
> #5 0x000000000051a907 in AmOfferAnswer::onReplyIn
> (this=this@entry=0x7fffec004070, reply=...)
> #6 0x000000000052f2ef in AmSipDialog::onRxReplyStatus
> (this=0x7fffec003cf0, reply=..., t_uac_it=...)
> #7 0x000000000047d160 in AmBasicSipDialog::onRxReply
> (this=0x7fffec003cf0, reply=...)
> (More stack frames follow...)
>
> (gdb) frame 1
> #1 0x00000000004a61a7 in AmB2BMedia::updateStreams
> (this=0x7fffec004950, a_leg=false, local_sdp=..., remote_sdp=...,
> ctrl=ctrl@entry=0x7fffec002fe8)
> 959 TRACE("%s (%c): updating streams with local & remote SDP\n",
> (gdb) p a
> $2 = (AmB2BSession *) 0x0
> (gdb) p b
> $3 = (AmB2BSession *) 0x0
>
>
> so segfault happened here:
>
> core/AmB2BMedia.cpp:
> 957 void AmB2BMedia::updateStreams(bool a_leg, const AmSdp &local_sdp,
> const AmSdp &remote_sdp, RelayController *ctrl)
> 958 {
> 959 TRACE("%s (%c): updating streams with local & remote SDP\n",
> 960 a_leg ? a->getLocalTag().c_str() : b->getLocalTag().c_str(),
> 961 a_leg ? 'A': 'B');
>
> thus AmB2BMedia doesn't properly process streams changes due to
> RtpTimeout event.
>
> it would be nice decide what's correct behavior in this case. (maybe
> remove session in early state on rtptimeout or consider possibility that
> streams may be removed before OK arrived)
>
> sipp uas scenario to reproduce this case present in attach
>
> --
> Best Regards
> Michael Furmur
>
> <?xml version="1.0" encoding="ISO-8859-1" ?>
> <!DOCTYPE scenario SYSTEM "sipp.dtd">
>
> <scenario name="UAS responder with delays">
>
> <recv request="INVITE" crlf="true">
> </recv>
>
> <pause milliseconds="24"/>
>
> <send>
> <![CDATA[
>
> SIP/2.0 100 Giving a try
> [last_Via:]
> [last_From:]
> [last_To:];tag=[pid]SIPpTag01[call_number]
> [last_Call-ID:]
> [last_CSeq:]
> Contact: <sip:[local_ip]:[local_port];transport=[transport]>
> Server: VCSR
> Content-Length: 0
>
> ]]>
> </send>
>
> <pause milliseconds="2470"/>
>
> <send>
> <![CDATA[
>
> SIP/2.0 183 Session Progress
> [last_Via:]
> [last_From:]
> [last_To:];tag=[pid]SIPpTag01[call_number]
> [last_Call-ID:]
> [last_CSeq:]
> Contact: <sip:[local_ip]:[local_port];transport=[transport]>
> Content-Disposition: session; handling=required
> Content-Type: application/sdp
> Content-Length: [len]
>
> v=0
> o=Sonus_UAC 6574 4936 IN IP4 [local_ip]
> s=SIP Media Capabilities
> c=IN IP4 [local_ip]
> t=0 0
> m=audio 6116 RTP/AVP 0 101
> a=direction: passive
> a=rtpmap:0 PCMU/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sendrecv
> a=ptime:20
>
> ]]>
> </send>
>
> <pause milliseconds="25736"/>
>
> <send>
> <![CDATA[
>
> SIP/2.0 180 Ringing
> [last_Via:]
> [last_From:]
> [last_To:];tag=[pid]SIPpTag01[call_number]
> [last_Call-ID:]
> [last_CSeq:]
> Contact: <sip:[local_ip]:[local_port];transport=[transport]>
> Content-Disposition: session; handling=required
> Content-Type: application/sdp
> Content-Length: [len]
>
> v=0
> o=Sonus_UAC 6574 4936 IN IP4 [local_ip]
> s=SIP Media Capabilities
> c=IN IP4 [local_ip]
> t=0 0
> m=audio 6116 RTP/AVP 0 101
> a=direction: passive
> a=rtpmap:0 PCMU/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sendrecv
> a=ptime:20
>
> ]]>
> </send>
>
> <pause milliseconds="25052"/>
>
> <send>
> <![CDATA[
>
> SIP/2.0 200 OK
> [last_Via:]
> [last_From:]
> [last_To:]
> [last_Call-ID:]
> [last_CSeq:]
> Contact: <sip:[local_ip]:[local_port];transport=[transport]>
> Content-Disposition: session; handling=required
> Content-Type: application/sdp
> Content-Length: [len]
>
> v=0
> o=Sonus_UAC 6574 4936 IN IP4 [local_ip]
> s=SIP Media Capabilities
> c=IN IP4 [local_ip]
> t=0 0
> m=audio 6116 RTP/AVP 0 101
> a=direction: passive
> a=rtpmap:0 PCMU/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sendrecv
> a=ptime:20
>
> ]]>
> </send>
>
> <timewait milliseconds="4000"/>
>
> <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
> <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
>
> </scenario>
>
> _______________________________________________
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