28 Sep
2016
28 Sep
'16
8 a.m.
Hi,
When using dialog module and track_cseq_updates when needing to update CSeq for
authenticated invites, if early media is present the CSeq in the Rack header is not also
incremented.
Kamailio version:
version: kamailio 4.4.2 (x86_64/linux) 892ad6
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE,
USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC,
DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER,
USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024,
BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 892ad6
compiled on 11:18:36 Sep 28 2016 with gcc 5.4.0
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29 Sep
29 Sep
3:29 a.m.
Can you attach a pcap for such case?
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4:39 a.m.
Sure attached.
packet 7 is the initial INVITE, this has Cseq of 17027
then there is a 401, using dialog module this increments the Cseq as expected to 17028 on
packet 12 and the call proceeds.
There is 100rel required in the 183 with SDP as expected which has RSeq: 981875949 (packet
14)
The PRACK for this 183 is sent in packet 17 with RAck: 981875949 17027 INVITE
The Cseq inthe RAck header has not incremented and remains the same as the initial INVITE
before authentication.
Many thanks
[trace-rack.zip](https://github.com/kamailio/kamailio/files/500149/trace-rac…
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6 Oct
6 Oct
10:34 a.m.
For the moment, an workaeound will be to remove **Supported: 100rel** header from INVITE,
so the caller doesn't provide RSeq and require RAck.
Overall, it will be considered as an enhancement to add in the future.
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15 Dec
15 Dec
5:08 a.m.
+1
Having a similar problem when we're using Kamailio to take a call from carrier 1 and
broadcast the call to 2 different agents via carrier 2. If the first branch get's a
486 and the second sends a 183, the 183 results in a PRACK sent by carrier 1, but Kamailio
always seems to send the PRACK for the first branch (which no longer exists) to carrier 2
and that results in an error sent back from carrier 2.
As suggested, we also resolved this by removing 100rel from the
"Supported"-header.
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8 Nov
8 Nov
2:55 a.m.
This issue is stale because it has been open 6 weeks with no activity. Remove stale label
or comment or this will be closed in 2 weeks.
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22 Nov
22 Nov
9:40 p.m.
Closed #801 as not planned.
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404
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6 comments
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participants (4)
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Daniel-Constantin Mierla -
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scfcplummy
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Tobias Lindgren