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Re: [recon-devel] Some problems occur after session is replaced.

Hello,

I appreciate your prompt response.

> 5.  I'm assuming A, B and C are all using recon - is this correct?

Yes.

> 3.  Are you using testUA to produce this scenario?  If so - can you
> please send over the series of commands you are using.
> 4.  Can you please provide a wireshark trace of this - it will help to
> be able to see the contents of the SDP bodies.

I am not using pure original testUA in this scenario.
However, I will describe my opeartions with testUA command.

Today I could not get enough environment for packet capture.
Wireshark instead of, could you see the attached chart?
SIP messages in the chart were created from the DUM DEBUG logs.

> 1.  Are you using a LocalParticipant in the original conversation
> between A and B?  In the 2nd call between B and C?
> 2.  After the call from B to C is placed - what is your conversation
> setup?  Do you have both A and C in the same conversation?  or are the
> two parties in separate Conversations?  If separate - which
> conversation has the Local Participant, if any?
Could you see the chart attached?

Following texts are same as operations written in the chart.

//////////////////////////////////////////////////////////////////
// operations on Alice
//////////////////////////////////////////////////////////////////

echocancel 1
autogain 1
noisereduction 1
createlocal
---partHandle=1 is created.---

createconv
---convHandle=1 is created.---

createconv
---convHandle=2 is created.---

addpart 2 1
volume 75
gain 75
createremote 2 <sip:Bob@repro>
---partHandle=2 is created.---

addpart 2 2

SEND: INVITE sip:Bob@repro SIP/2.0

=== onParticipantAlerting: handle=2 msg=SipResp: 180
tid=8d66ff5e416bb227 cseq=INVITE contact=Bob@xxxxxxxxxxxxxxx:45060 / 1
from(wire) ===

createmedia 1 tone:ringback;local-only
---partHandle=3 is created.---

addpart 1 1

=== onParticipantConnected: handle=2 msg=SipResp: 200
tid=8d66ff5e416bb227 cseq=INVITE contact=Bob@xxxxxxxxxxxxxxx:45060 / 1
from(wire) ===

destroypart 3
removepart 1 1

=== onParticipantDestroyed: handle=3 ===

SEND: SIP/2.0 200 OK

SEND: SIP/2.0 202 Accepted

SEND: NOTIFY sip:Bob@xxxxxxxxxxxxxxx:45060;rinstance=822ef86bd71f5007 SIP/2.0

SEND: INVITE sip:Carol@repro SIP/2.0

SEND: NOTIFY sip:Bob@xxxxxxxxxxxxxxx:45060;rinstance=822ef86bd71f5007 SIP/2.0

SEND: INVITE sip:Carol@xxxxxxxxxxxxxxx:55060;rinstance=dec1ffe9b0904ed5 SIP/2.0

=== onParticipantConnected: handle=2 msg=SipResp: 200
tid=2d2a813cc86a3c7d cseq=INVITE contact=Carol@xxxxxxxxxxxxxxx:55060 /
1 from(wire) ===

SEND: SIP/2.0 491 Request Pending

SEND: SIP/2.0 200 OK

SEND: SIP/2.0 200 OK

//////////////////////////////////////////////////////////////////
// operations on Bob
//////////////////////////////////////////////////////////////////

echocancel 1
autogain 1
noisereduction 1
createlocal
---partHandle=1 is created.---

createconv
---convHandle=1 is created.---

=== onIncomingParticipant: handle=2auto=0 msg=SipReq:  INVITE
Bob@xxxxxxxxxxxxxxx:45060 tid=d570345093bc6b62 cseq=INVITE
contact=Alice@xxxxxxxxxxxxxxx:35060 / 1 from(wire) ===

createconv
---convHandle=2 is created.---

addpart 2 1
volume 75
gain 75
addpart 2 2
alert 2 noearly
createmedia 1 tone:ring;local-only
---partHandle=3 is created.---

addpart 1 1

SEND: SIP/2.0 180 Ringing

answer 2
addpart 2 1
volume 75
gain 75
destroypart 3
removepart 1 1

SEND: SIP/2.0 200 OK

=== onParticipantDestroyed: handle=3 ===

removepart 2 1
createmedia 1 tone:dialtone;local-only
---partHandle=4 is created.---

SEND: INVITE sip:Alice@xxxxxxxxxxxxxxx:35060 SIP/2.0

addpart 1 1
createconv
---convHandle=3 is created.---

addpart 3 1
volume 75
gain 75
createremote 3 <sip:Carol@repro>
---partHandle=5 is created.---

addpart 3 5
destroypart 4
removepart 1 1

=== onParticipantDestroyed: handle=4 ===

SEND: INVITE sip:Carol@repro SIP/2.0

=== onParticipantAlerting: handle=5 msg=SipResp: 180
tid=2e63bc56165ed57d cseq=INVITE contact=Carol@xxxxxxxxxxxxxxx:55060 /
1 from(wire) ===

createmedia 1 tone:ringback;local-only
---partHandle=6 is created.---

addpart 1 1

=== onParticipantConnected: handle=5 msg=SipResp: 200
tid=2e63bc56165ed57d cseq=INVITE contact=Carol@xxxxxxxxxxxxxxx:55060 /
1 from(wire) ===

destroypart 6
removepart 1 1

=== onParticipantDestroyed: handle=6 ===

redirectTo 2 5

SEND: REFER sip:Alice@xxxxxxxxxxxxxxx:35060 SIP/2.0

=== onParticipantTerminated: handle=5 ===

createmedia 1 tone:busy;local-only
---partHandle=7 is created.---

addpart 1 1

SEND: SIP/2.0 200 OK

=== onParticipantDestroyed: handle=5 ===

removepart 3 5
destroyconv 3

=== onConversationDestroyed: handle=3 ===

SEND: SIP/2.0 200 OK

=== onParticipantRedirectSuccess: handle=2 ===

destroypart 7
removepart 1 1
destroyconv 2

=== onParticipantDestroyed: handle=7 ===

SEND: BYE sip:Alice@xxxxxxxxxxxxxxx:35060 SIP/2.0

=== onParticipantTerminated: handle=2 ===
=== onConversationDestroyed: handle=2 ===
=== onParticipantDestroyed: handle=2 ===
=== onConversationDestroyed: handle=1 ===
=== onParticipantDestroyed: handle=1 ===

//////////////////////////////////////////////////////////////////
// operations on Carol
//////////////////////////////////////////////////////////////////

echocancel 1
autogain 1
noisereduction 1
createlocal
---partHandle=1 is created.---

createconv
---convHandle=1 is created.---

=== onIncomingParticipant: handle=2auto=0 msg=SipReq:  INVITE
Carol@xxxxxxxxxxxxxxx:55060 tid=7cba3d43b39e2260 cseq=INVITE
contact=Bob@xxxxxxxxxxxxxxx:45060 / 1 from(wire) ===

createconv
---convHandle=2 is created.---

addpart 2 1
volume 75
gain 75
addpart 2 2
alert 2 noearly
createmedia 1 tone:ring;local-only
---partHandle=3 is created.---

addpart 1 1

SEND: SIP/2.0 180 Ringing

answer 2
addpart 2 1
volume 75
gain 75
destroypart 3
removepart 1 1

SEND: SIP/2.0 200 OK

=== onParticipantDestroyed: handle=3 ===

SEND: BYE sip:Bob@xxxxxxxxxxxxxxx:45060 SIP/2.0

SEND: SIP/2.0 200 OK

SEND: INVITE sip:Alice@xxxxxxxxxxxxxxx:35060 SIP/2.0

SEND: SIP/2.0 491 Request Pending

SEND: INVITE sip:Alice@xxxxxxxxxxxxxxx:35060 SIP/2.0

//////////////////////////////////////////////////////////////////


Regards,




2010/1/27 Scott Godin <sgodin@xxxxxxxxxxxxxxx>:
> Hello,
>
> Thanks for the good detail on the SIP signalling portion of your
> issue.  However I have a couple questions on other important parts of
> your setup:
> 1.  Are you using a LocalParticipant in the original conversation
> between A and B?  In the 2nd call between B and C?
> 2.  After the call from B to C is placed - what is your conversation
> setup?  Do you have both A and C in the same conversation?  or are the
> two parties in separate Conversations?  If separate - which
> conversation has the Local Participant, if any?
> 3.  Are you using testUA to produce this scenario?  If so - can you
> please send over the series of commands you are using.
> 4.  Can you please provide a wireshark trace of this - it will help to
> be able to see the contents of the SDP bodies.
> 5.  I'm assuming A, B and C are all using recon - is this correct?
>
> Thanks,
> Scott
>
> On Tue, Jan 26, 2010 at 8:01 AM, Yamato Kira <coordinator.kira@xxxxxxxxx> 
> wrote:
>> Hi,
>>
>> I am using resiprocate-1.6.
>>
>> I tried Transfer-Attended sequence with a sip proxy server(repro) and my
>> SIP-UA applications which using recon.
>>
>> A...B...C
>> |...|...|
>> |<=>|...| two party call between A and B.
>> |...|<=>| two party call between B and C.
>> :...:...:
>> |...|...| B execute recon::ConversationManager::rediretToParticipant(A,C)
>> |<R-|...| B send REFER(repleces) to A.
>> |-INV-->| A send INVITE(repleces) to C.
>> |<-200--| C respond 200OK(INVITE) to A.
>> :...:...:
>>
>> see also
>> http://tools.ietf.org/html/rfc5359#section-2.5
>>
>>
>> I use the recon::ConversationManager::rediretToParticipant().
>> But my application using RECON acted two motions not intended.
>>
>>
>> === 1st problem ===
>> This may be not problem.
>>
>> - After receiving INVITE with Replaces header,
>>  my applications which confirmed new session replaced sent re-INVITEs and
>> 491 responses each other.
>>
>> A...B...C
>> :...:...:
>> |...|...| B execute rediretToParticipant(A,C)
>> |<R-|...| B send REFER(repleces) to A.
>> |-INV-->| A send INVITE(repleces) to C.
>> |<-200--| C respond 200OK(INVITE) to A.
>> |-INV-->| A send re-INVITE to C.
>> |<-INV--| C send re-INVITE to A.
>> |-491-->| A respond 491 Request Pending to C.
>> |<-491--| C respond 491 Request Pending to A.
>> :...:...:
>>
>> These re-INVITEs caused by unhold() in
>> RemoteParticipant::stateTransition(Connected);
>> This unhold() is called because mPendingRequest.mType is Unhold.
>> mPendingRequest.mType is set according to the following timing.
>>
>> + receive INVITE(repleces)
>> .+ new RemoteParticipant is created. RemoteParticipant::mLocalHold is set
>> true by constructor.
>> .+ RemoteParticipant::onNewSession(Server)
>> ..+ participantToReplace->replaceWithParticipant(this);
>> ...+ Participant::copyConversationsToParticipant()
>> ....+ RemoteParticipant::addToConversation()
>> .....+ if(mLocalHold && !conversation->shouldHold())
>> .....+ unhold()
>> ......+ mPendingRequest.mType = Unhold;
>>
>> or
>>
>> + receive REFER(replaces)
>> .+ RemoteParticipant::onRefer()
>> ..+ new RemoteParticipant is created. RemoteParticipant::mLocalHold is set
>> true by constructor.
>> ..+ replaceWithParticipant(participant);
>> ...+ Participant::copyConversationsToParticipant()
>> ....+ RemoteParticipant::addToConversation()
>> .....+ if(mLocalHold && !conversation->shouldHold())   // mLocalHold is
>> true.
>> .....+ unhold()
>> ......+ mPendingRequest.mType = Unhold;
>>
>>
>> I have a try to insert tentative code into RemoteParticipant.cxx.
>>
>> --------
>> RemoteParticipant::onNewSession(ServerInviteSessionHandle...
>> {
>> :
>> +        mLocalHold = false;                    // XXX to avoid unhold()
>>         participantToReplace->replaceWithParticipant(this);      // adjust
>> conversation mappings
>> :
>> }
>> --------
>>
>> --------
>> RemoteParticipant::onRefer(InviteSessionHandle...
>> {
>> :
>> +     participant->mLocalHold = false;          // XXX to avoid unhold()
>>      replaceWithParticipant(participant);      // adjust conversation
>> mappings - do this after buildSdpOffer, so that we have a bridge port
>> :
>> }
>> --------
>>
>> Then, the SIP sequence has changed as follows.
>>
>> A...B...C
>> :...:...:
>> |...|...| B execute rediretToParticipant(A,C)
>> |<R-|...| B send REFER(repleces) to A.
>> |-INV-->| A send INVITE(repleces) to C.
>> |<-200--| C respond 200OK(INVITE) to A.
>>
>>
>> But, I am suspecting that my tentative source code is impropriety.
>>
>>
>>
>> === 2nd problem ===
>>
>> - After receiving INVITE with Replaces header,
>>  my applications established a new session between A and C, nevertheless
>> they became silent.
>>
>> A...B...C
>> :...:...:
>> |...|...| B execute rediretToParticipant(A,C)
>> |<R-|...| B send REFER(repleces) to A.
>> |-INV-->| A send INVITE(repleces) to C.
>> |<-200--| C respond 200OK(INVITE) to A.
>> |-INV-->| A send re-INVITE to C.
>> |<-INV--| C send re-INVITE to A.
>> |-491-->| A respond 491 Request Pending to C.
>> |<-491--| C respond 491 Request Pending to A.
>> :...:...:
>> |-RTP-->|
>> |-RTP-->| RTP packets flowed only to one direction.
>> |-RTP-->|
>> :...:...:
>>
>> Not only A but also C are silent.
>>
>>
>> I am thinking that RemoteParticipant::adjustRTPStreams() and
>> RemoteParticipant::replaceWithParticipant() may be correlating with this
>> problem.
>> But, I am puzzled.
>>
>> Following is a part of the log of adjustRTPStreams and RemoteParticipant
>> handles.
>> Could anyone help me?
>>
>>
>>
>> A...B...C
>> |...|...|
>> |<=>|...| two party call between A and B.
>> :...:...:
>> |...|-->| B send initial INVITE to C.
>>
>>
>> DEBUG and INFO Logs in C:
>> RemoteParticipant.cxx:71 | RemoteParticipant created (UAS or forked leg),
>> handle=14
>> RemoteParticipant.cxx:1786 | onNewSession(Server): handle=14
>> RemoteParticipant.cxx:1989 | onOffer: handle=14
>> :
>> Conversation.cxx:224 | Participant handle=14 added to conversation handle=5
>> (BridgePort=3)
>> BridgeMixer.cxx:37 | calculatingMixWeigthsForParticipant, handle=14,
>> bridgePort=3
>> RemoteParticipant.cxx:565 | RemoteParticipant::unhold request: handle=14
>> RemoteParticipant.cxx:1466 | adjustRTPStreams: handle=14, found media line
>> in local sdp, mediaType=2, transportType=3, numConnections=1, port=51010
>> RemoteParticipant.cxx:1698 | adjustRTPStreams: handle=14
>> RemoteParticipant.cxx:1746 | adjustRTPStreams: handle=14
>> RemoteParticipant.cxx:1756 | adjustRTPStreams: handle=14, receiving...
>>
>>
>> A...B...C
>> :...:...:
>> |...|<--| C respond 200OK(INVITE) to B
>>
>>
>> RemoteParticipant.cxx:1891 | onConnected: handle=14, SipResp: 200
>> RemoteParticipant.cxx:253 | RemoteParticipant::stateTransition of handle=14
>> to state=Connected
>>
>>
>> A...B...C
>> :...:...:
>> |...|...| B execute recon::ConversationManager::rediretToParticipant(A,C)
>> |<R-|...| B send REFER(repleces) to A.
>> |-INV-->| A send INVITE(repleces) to C.
>>
>> DEBUG and INFO Logs in C:
>> RemoteParticipant.cxx:71 | RemoteParticipant created (UAS or forked leg),
>> handle=16
>> RemoteParticipant.cxx:1786 | onNewSession(Server): handle=16
>> RemoteParticipant.cxx:1798 | onNewSession(Server): handle=16, to replace
>> handle=14
>> :
>> Conversation.cxx:224 | Participant handle=14 added to conversation handle=5
>> (BridgePort=-1)//////// bridgePort=-1 is correct value ??
>> BridgeMixer.cxx:37 | calculatingMixWeigthsForParticipant, handle=14,
>> bridgePort=-1         //////// bridgePort=-1 is correct value ??
>> RemoteParticipant.cxx:565 | RemoteParticipant::unhold request: handle=14
>> :
>> RemoteParticipant.cxx:253 | RemoteParticipant::stateTransition of handle=14
>> to state=Replacing
>> RemoteParticipant.cxx:1989 | onOffer: handle=14, SipReq:
>> :
>> RemoteParticipant.cxx:1466 | adjustRTPStreams: handle=14, found media line
>> in local sdp, mediaType=2, transportType=3, numConnections=1, port=51012
>> RemoteParticipant.cxx:1698 | adjustRTPStreams: handle=14
>> RemoteParticipant.cxx:1746 | adjustRTPStreams: handle=14
>> RemoteParticipant.cxx:1756 | adjustRTPStreams: handle=14, receiving...
>> RemoteParticipant.cxx:253 | RemoteParticipant::stateTransition of handle=14
>> to state=Connecting
>>
>>
>> A...B...C
>> :...:...:
>> |<-200--| C respond 200OK(INVITE) to A.
>>
>>
>> DEBUG and INFO Logs in C:
>> RemoteParticipant.cxx:1891 | onConnected: handle=14, SipResp: 200
>> RemoteParticipant.cxx:253 | RemoteParticipant::stateTransition of handle=14
>> to state=Connected
>> RemoteParticipant.cxx:565 | RemoteParticipant::unhold request: handle=14
>> RemoteParticipantDialogSet.cxx:601 | setProposedSdp: handle=14,
>> proposedSdp=v=0
>> RemoteParticipant.cxx:1466 | adjustRTPStreams: handle=14, found media line
>> in local sdp, mediaType=2, transportType=3, numConnections=1, port=51012
>> RemoteParticipant.cxx:1631 | adjustRTPStreams: handle=14, mediaDirection=3,
>> remoteIp=, remotePort=0
>> RemoteParticipant.cxx:1722 | adjustRTPStreams: handle=14, stop sending.
>> RemoteParticipant.cxx:1756 | adjustRTPStreams: handle=14, receiving...
>> RemoteParticipant.cxx:253 | RemoteParticipant::stateTransition of handle=14
>> to state=Unholding
>>
>> A...B...C
>> :...:...:
>> |-INV-->| A send re-INVITE to C.
>> |<-INV--| C send re-INVITE to A.
>> |-491-->| A respond 491 Request Pending to C.
>> |<-491--| C respond 491 Request Pending to A.
>> :...:...:
>> |-RTP-->|
>> |-RTP-->| RTP packets flowed only to one direction.
>> |-RTP-->|
>> :...:...:
>>
>> RemoteParticipant.cxx:1975 | onAnswer: handle=14, SipResp: 200
>> RemoteParticipant.cxx:1466 | adjustRTPStreams: handle=14, found media line
>> in local sdp, mediaType=2, transportType=3, numConnections=1, port=51012
>> RemoteParticipant.cxx:1698 | adjustRTPStreams: handle=14
>> RemoteParticipant.cxx:1756 | adjustRTPStreams: handle=14, receiving...
>> RemoteParticipant.cxx:253 | RemoteParticipant::stateTransition of handle=14
>> to state=Connected
>>
>>
>>
>> Regards,
>>
>> _______________________________________________
>> recon-devel mailing list
>> recon-devel@xxxxxxxxxxxxxxx
>> List Archive: http://list.resiprocate.org/archive/recon-devel/
>>
>

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