Re: [Linphone-developers] Fwd: Possible bug Linphone on running on Linux

[Johan Pascal]

Hi Kevin,
thanks for the complete traces, it helps a lot.

On your fail case linphone is unable to parse the SDP 200Ok message sent 
by the remote client. This is because the incoming message have this 
line:(see trace line 304)
c=IN IP6 [fd9f:af1c:a25b:0:6ab5:99ff:feea:62fc]

The [] around the IPV6 address are not valid on the c line.

In your wireshark log I can't see the [] around the address. Did you 
capture the packets on the remote client computer or the linphone's one?

It looks like some router messed the SDP 200Ok. Can you reproduce using 
TLS connection instead of UDP?

Can you capture both the packet outgoing from the remote client side and 
the incoming packet arriving on the machine running linphone just to 
check that the incoming packet has been corrupted as I suspect?

regards,

Johan

On 21/01/15 11:53, kevin barnard wrote:
> Hello
>
> My first attempt at trying to help out with a bug report
>
> Attached is zip file with pcap and Linphone logs
>
> two calls are of interest, one failing and one working
>
> a difference I see is that the failing one has an (a) rtmap section,
> which may be causing the call to be dropped by Linphone, though that
> rtpmap should be optional ?
>
> another is that the working one has "message: Adding PCMU/8000 for
> compatibility, just in case"
>
> anyway, let me know what you think
>
> regards
> kevin
>
> GOOD
>
> v=0
>
> o=aculab-01841801 15724 15724 IN IP6 fd9f:af1c:a25b:0:6ab5:99ff:feea:62fc
>
> s=-
>
> c=IN IP6 fd9f:af1c:a25b:0:6ab5:99ff:feea:62fc
>
> t=0 0
>
> m=audio 10720 RTP/AVP 8 101
>
> a=rtpmap:101 telephone-event/8000
>
> a=fmtp:101 0-15
>
> message: channel [0xcfde40] [593] bytes parsed
>
> message: Found transaction matching response.
>
> message: Changing [client] [INVITE] transaction [0xdd7e80], from state
> [PROCEEDING] to [ACCEPTED]
>
> message: Dialog [0xd7d2a0]: now updated by transaction [0xdd7e80].
>
> message: op [0xdbbb80] : set_or_update_dialog() current=[0xd7d2a0]
> new=[0xd7d2a0]
>
> message: Op [0xdbbb80] receiving call response [200], dialog is
> [0xd7d2a0] in state [BELLE_SIP_DIALOG_CONFIRMED]
>
> message: Found payload PCMA/8000 fmtp=
>
> message: Found payload telephone-event/8000 fmtp=0-15
>
> message: Doing SDP offer/answer process of type outgoing
>
> message: Processing for stream 0
>
> message: Adding PCMU/8000 for compatibility, just in case.
>
> BAD
>
> v=0
>
> o=aculab-01642001 26500 26500 IN IP6 fd9f:af1c:a25b:0:6ab5:99ff:feea:62fc
>
> s=-
>
> c=IN IP6 fd9f:af1c:a25b:0:6ab5:99ff:feea:62fc
>
> t=0 0
>
> m=audio 0 RTP/AVP 8 101
>
> *a=rtpmap:8 PCMA/8000*
>
> a=rtpmap:101 telephone-event/8000
>
> a=fmtp:101 0-15
>
> message: channel [0xcfde40] [593] bytes parsed
>
> message: Found transaction matching response.
>
> message: Changing [client] [INVITE] transaction [0xdccdd0], from state
> [PROCEEDING] to [ACCEPTED]
>
> message: Dialog [0xdcfea0]: now updated by transaction [0xdccdd0].
>
> message: op [0xd9a580] : set_or_update_dialog() current=[0xdcfea0]
> new=[0xdcfea0]
>
> message: Op [0xd9a580] receiving call response [200], dialog is
> [0xdcfea0] in state [BELLE_SIP_DIALOG_CONFIRMED]
>
> message: Found payload PCMA/8000 fmtp=
>
> message: Found payload telephone-event/8000 fmtp=0-15
>
> message: Doing SDP offer/answer process of type outgoing
>
> message: Processing for stream 0
>
> warning: No matching stream for 0
>
>
>
>
>
>
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