Double Session Description Protocol Version (v) 0 data when using rtpengine

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Double Session Description...

Wilkins, Steve

24 Oct 2018 24 Oct '18

1:07 a.m.

Hello all,

I noticed double Session Description Protocol Version (v) 0 data in the SDP section when using rtpengine with Kamailio. Has any else noticed this? Is there a way for Kamailio to remove one of them?

Thank you, -Steve

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Alex Balashov

24 Oct 24 Oct

1:31 a.m.

Is the entire SDP body doubled, or just the v=0 line?

-- Sent from mobile. Apologies for brevity and errors.

-----Original Message----- From: "Wilkins, Steve" swwilkins@mitre.org To: "Kamailio (SER) - Users Mailing List" sr-users@lists.kamailio.org Sent: Tue, 23 Oct 2018 9:07 PM Subject: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Hello all,

I noticed double Session Description Protocol Version (v) 0 data in the SDP section when using rtpengine with Kamailio. Has any else noticed this? Is there a way for Kamailio to remove one of them?

Thank you, -Steve

Wilkins, Steve

1:54 a.m.

Entire section.

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:31 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Is the entire SDP body doubled, or just the v=0 line?

-- Sent from mobile. Apologies for brevity and errors.

Hello all,

I noticed double Session Description Protocol Version (v) 0 data in the SDP section when using rtpengine with Kamailio. Has any else noticed this? Is there a way for Kamailio to remove one of them?

Thank you, -Steve

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Alex Balashov

1:57 a.m.

Then your description of the problem, and the subject line of your post, is not accurate. :-)

This should not be happening. What does the rtpengine log show for the given Call-ID?

-- Sent from mobile. Apologies for brevity and errors.

-----Original Message----- From: "Wilkins, Steve" swwilkins@mitre.org To: "Kamailio (SER) - Users Mailing List" sr-users@lists.kamailio.org Sent: Tue, 23 Oct 2018 9:55 PM Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Entire section.

Is the entire SDP body doubled, or just the v=0 line?

-- Sent from mobile. Apologies for brevity and errors.

Hello all,

I noticed double Session Description Protocol Version (v) 0 data in the SDP section when using rtpengine with Kamailio. Has any else noticed this? Is there a way for Kamailio to remove one of them?

Thank you, -Steve

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Wilkins, Steve

1:58 a.m.

I thought using data would imply what I meant to say, but I guess I was wrong. Sometime I take to many shortcuts in typing.

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:57 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Then your description of the problem, and the subject line of your post, is not accurate. :-)

This should not be happening. What does the rtpengine log show for the given Call-ID?

-- Sent from mobile. Apologies for brevity and errors.

Entire section.

Is the entire SDP body doubled, or just the v=0 line?

-- Sent from mobile. Apologies for brevity and errors.

Hello all,

I noticed double Session Description Protocol Version (v) 0 data in the SDP section when using rtpengine with Kamailio. Has any else noticed this? Is there a way for Kamailio to remove one of them?

Thank you, -Steve

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Alex Balashov

1:57 a.m.

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

Wilkins, Steve

1:58 a.m.

Let me check...Thank you.

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:58 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Wilkins, Steve

2 a.m.

No calls to fix_nated_sdp().

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Wilkins, Steve

11:03 a.m.

I should also note that when the 200 OK is received from Asterisk, it does not have the double SDP, only after Kamailio forwards the 200 OK does the double appear.

-Steve

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Wilkins, Steve Sent: Tuesday, October 23, 2018 10:00 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

No calls to fix_nated_sdp().

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

Alex Balashov

11:27 a.m.

I would repeat my invitation to analyse RTPEngine logs for signs of a double offer/answer.

On Wed, Oct 24, 2018 at 11:03:11AM +0000, Wilkins, Steve wrote:

...

I should also note that when the 200 OK is received from Asterisk, it does not have the double SDP, only after Kamailio forwards the 200 OK does the double appear.

-Steve

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Wilkins, Steve Sent: Tuesday, October 23, 2018 10:00 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

No calls to fix_nated_sdp().

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:58 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

Wilkins, Steve

11:43 a.m.

Hi Alex,

I just ran a test, and yes, there is an error in the rtpengine log "Error Parsing RTP Header" and there is a double SDP present.

Thank you, -Steve

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Wednesday, October 24, 2018 7:28 AM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

I would repeat my invitation to analyse RTPEngine logs for signs of a double offer/answer.

On Wed, Oct 24, 2018 at 11:03:11AM +0000, Wilkins, Steve wrote:

...

I should also note that when the 200 OK is received from Asterisk, it does not have the double SDP, only after Kamailio forwards the 200 OK does the double appear.

-Steve

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Wilkins, Steve Sent: Tuesday, October 23, 2018 10:00 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

No calls to fix_nated_sdp().

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:58 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Wilkins, Steve

12:06 p.m.

Alex,

If this problem is a Kamailio "bug", is there a proper site to report it to?

Thank you

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Wilkins, Steve Sent: Wednesday, October 24, 2018 7:44 AM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Hi Alex,

I just ran a test, and yes, there is an error in the rtpengine log "Error Parsing RTP Header" and there is a double SDP present.

Thank you, -Steve

I would repeat my invitation to analyse RTPEngine logs for signs of a double offer/answer.

On Wed, Oct 24, 2018 at 11:03:11AM +0000, Wilkins, Steve wrote:

...

I should also note that when the 200 OK is received from Asterisk, it does not have the double SDP, only after Kamailio forwards the 200 OK does the double appear.

-Steve

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Wilkins, Steve Sent: Tuesday, October 23, 2018 10:00 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

No calls to fix_nated_sdp().

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:58 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Also, is there any possibility that you are calling fix_nated_sdp() and rtpengine_offer/manage() successively?

-- Sent from mobile. Apologies for brevity and errors.

Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

Richard Fuchs

2:20 p.m.

This is usually a symptom of doing a double SDP rewrite, e.g. by making a call to rtpengine twice in the same script iteration, or making a call to rtpengine and then doing some other SDP rewrite operations either before or after that.

Cheers

On 2018-10-23 21:54, Wilkins, Steve wrote:

...

Entire section.

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Alex Balashov Sent: Tuesday, October 23, 2018 9:31 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Is the entire SDP body doubled, or just the v=0 line?

-- Sent from mobile. Apologies for brevity and errors.

-----Original Message----- From: "Wilkins, Steve" swwilkins@mitre.org To: "Kamailio (SER) - Users Mailing List" sr-users@lists.kamailio.org Sent: Tue, 23 Oct 2018 9:07 PM Subject: [SR-Users] Double Session Description Protocol Version (v) 0 data when using rtpengine

Hello all,

I noticed double Session Description Protocol Version (v) 0 data in the SDP section when using rtpengine with Kamailio. Has any else noticed this? Is there a way for Kamailio to remove one of them?

Thank you, -Steve

Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

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Alex Balashov
Richard Fuchs
Wilkins, Steve