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From: | David Lists |
Subject: | Re: [Linphone-developers] Linphone not replying to SDP packets |
Date: | Wed, 26 Mar 2014 10:48:24 -0600 |
Hi,
The retransmissions of 401 are simply UDP retransmissions.
The error you are getting comes from the 200 OK messages your Asterisk server is sending that do not contain the mandatory contact header.
For example, a bad 200 OK in your logs:
SIP/2.0 200 OK Via: SIP/2.0/UDP 10.239.216.149:39383;branch=z9hG4bK.GIDiMHiyC;received=199.123.195.94;rport=44213 From: <sip:address@hidden>;tag=CbeXBXXD~ To: sip:address@hidden;tag=as61386cd3 Call-ID: sxQFf3e5Lm CSeq: 21 INVITE Server: VoipCoVoIP Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH Supported: replaces, timer Content-Type: application/sdp Content-Length: 273 v=0 o=root 799165012 799165012 IN IP4 132.39.8.242 s=VoipCoVoIP c=IN IP4 132.39.8.242 t=0 0 m=audio 6140 RTP/AVP 0 8 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecvAnd a correct one:
SIP/2.0 200 OK Via: SIP/2.0/UDP 10.239.216.149:39383;branch=z9hG4bK.qshxnPn1j;received=199.123.195.94;rport=44213 From: <sip:address@hidden>;tag=y47PigZUM To: sip:address@hidden;tag=as3148b844 Call-ID: N7rFteUp~U CSeq: 21 INVITE Server: VoipCoVoIP Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH Supported: replaces, timer Contact: <sip:address@hidden:5060> Content-Type: application/sdp Content-Length: 276 v=0 o=root 1145458109 1145458109 IN IP4 132.39.8.242 s=VoipCoVoIP c=IN IP4 132.39.8.242 t=0 0 m=audio 28266 RTP/AVP 0 8 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecvCheers,
Ghislain
On 24/03/2014 23:21, list traffic wrote:
Hi,
We have a custom Linphone client (belle-sip/1.2.1) running on iOS6 connected to an Asterisk 11.8.1 server and are having some issues.Fairly often, the Linphone client ignores the SDP messages from Asterisk and doesn't send an ACK back. This causes Asterisk to close the connection (which Linphone replies back with a 481
The Linphone logs indicate the packets are being received. The difference I can see with the failed calls is that it seems consistent that the Asterisk box retransmits the 401 once but both are prior to the Linephone's successful INVITE.
I'm attaching some log files and a ladder diagram showing the problem. The first and the third call show the issue whereas the second call worked successfully.
Any ideas on what the problem might be?Thanks!+david
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