Getting notified on RTP/RTCP address changes
Is there some way to get notified when the RTP/RTCP address changes in
pjsip, for example when pjsip notices a stream coming from a different port
number than the original port number from the SDP?
you will need to use a packet sniffer to diagnose this type of issue. An application will only receive packets on the ports it is listening on. If you want to change the port your application listens on, you need to use the SIP re-invite process (which exchanges a new SDP)
From: pjsip pjsip-bounces@lists.pjsip.org on behalf of mscdexdotexe mscdex@mscdex.net
Sent: 26 March 2018 10:17:12
To: pjsip@lists.pjsip.org
Subject: [pjsip] Getting notified on RTP/RTCP address changes
Is there some way to get notified when the RTP/RTCP address changes in pjsip, for example when pjsip notices a stream coming from a different port number than the original port number from the SDP?
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Hello Marcel,
PJSIP automatically adjusts these addresses if it detects a different
source address and/or port. This can be disabled with the
PJMEDIA_UDP_NO_SRC_ADDR_CHECKING flag, but some SIP clients will use a
dummy port in the SDP and then transmit from a different port, so disabling
PJSIP's automatic switching behavior is not useful/helpful. There is also
nothing I can do about the SIP clients in question, so it would be nice if
there was a way to subscribe to these source address/port changes so I can
update my application appropriately.
On Thu, Mar 29, 2018 at 10:46 AM, Landman, Marcel (Comms & Control
Solutions) Marcel.Landman@capita.co.uk wrote:
you will need to use a packet sniffer to diagnose this type of issue. An
application will only receive packets on the ports it is listening on. If
you want to change the port your application listens on, you need to use
the SIP re-invite process (which exchanges a new SDP)
From: pjsip pjsip-bounces@lists.pjsip.org on behalf of mscdexdotexe <
mscdex@mscdex.net>
Sent: 26 March 2018 10:17:12
To: pjsip@lists.pjsip.org
Subject: [pjsip] Getting notified on RTP/RTCP address changes
Is there some way to get notified when the RTP/RTCP address changes in
pjsip, for example when pjsip notices a stream coming from a different port
number than the original port number from the SDP?
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I see. I did not understand your use case. You are talking about the source port. I am not familiar with any SDP attribute that specifies the source port as you are suggesting, nor can I think of any use case where one would care. What are you trying to do?
From: pjsip pjsip-bounces@lists.pjsip.org on behalf of mscdexdotexe mscdex@mscdex.net
Sent: 30 March 2018 21:19:15
To: pjsip list
Subject: Re: [pjsip] Getting notified on RTP/RTCP address changes
Hello Marcel,
PJSIP automatically adjusts these addresses if it detects a different source address and/or port. This can be disabled with the PJMEDIA_UDP_NO_SRC_ADDR_CHECKING flag, but some SIP clients will use a dummy port in the SDP and then transmit from a different port, so disabling PJSIP's automatic switching behavior is not useful/helpful. There is also nothing I can do about the SIP clients in question, so it would be nice if there was a way to subscribe to these source address/port changes so I can update my application appropriately.
On Thu, Mar 29, 2018 at 10:46 AM, Landman, Marcel (Comms & Control Solutions) <Marcel.Landman@capita.co.ukmailto:Marcel.Landman@capita.co.uk> wrote:
you will need to use a packet sniffer to diagnose this type of issue. An application will only receive packets on the ports it is listening on. If you want to change the port your application listens on, you need to use the SIP re-invite process (which exchanges a new SDP)
From: pjsip <pjsip-bounces@lists.pjsip.orgmailto:pjsip-bounces@lists.pjsip.org> on behalf of mscdexdotexe <mscdex@mscdex.netmailto:mscdex@mscdex.net>
Sent: 26 March 2018 10:17:12
To: pjsip@lists.pjsip.orgmailto:pjsip@lists.pjsip.org
Subject: [pjsip] Getting notified on RTP/RTCP address changes
Is there some way to get notified when the RTP/RTCP address changes in pjsip, for example when pjsip notices a stream coming from a different port number than the original port number from the SDP?
This message has been scanned by Capita’s systems, but if you believe it to be spam then click herehttps://www.mailcontrol.com/sr/MZbqvYs5QwJvpeaetUwhCQ== to report this email as spam.
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