[SR-Users] replay of tls delayed by 30 secs.

Andrew Chen achen at fuze.com
Tue Sep 25 00:08:10 CEST 2018


Hi Kam community,

Facing an urgent issue here and not sure how to troubleshoot it further.

So our engineers been getting reports of unknown SIP timeouts and they
suspect it's something on the Kamailio side.  I've logged every transaction
from receiving the message to done relaying it as shown below:

Sep 24 18:38:13 sjoprodfnsg01 /usr/local/sbin/kamailio[42608]: INFO:
<script>: [1589Fz-ses1-41d9a88aR70125425 at xxx.xxx.xxx.xxx][4534123][CSeq 7]
NG-FuzeMedia-Server/42ae58c/mediahub Relaying [UPDATE] from
(xxx.xxx.xxx.xxx  ) to ( xxx.xxx.xxx.xxx  ) via (tls)
Sep 24 18:38:13 sjoprodfnsg01 /usr/local/sbin/kamailio[42608]: INFO:
<script>: [1589Fz-ses1-41d9a88aR70125425@ xxx.xxx.xxx.xxx  ][4534123][CSeq
7] NG-FuzeMedia-Server/42ae58c/mediahub Done relay [UPDATE] from
(xxx.xxx.xxx.xxx  ) to ( xxx.xxx.xxx.xxx  ) via (tls)

When I pulled the 443 SIP trace from my tcpdump session, it shows the
application data left the machine at 18:44 as shown here:

[image: image.png]

Note:  This packet is encrypted and can't see the actual SIP message.

This matches what was received on the client logs:

2018-09-24T18:38:44.032Z [40927] [INF] fuze.sip SipParser.cpp:549
LogSipMessage: xxx.xxx.xxx.xxx:443 - 4292B (local time 09/24 11:38:44)
--------------------
RECEIVE:

UPDATE sips:Luke_Surazski@ xxx.xxx.xxx.xxx:50795;id=37262838;inst=52241254
SIP/2.0
Via: SIP/2.0/TLS
xxx.xxx.xxx.xxx:443;branch=z9hG4bK15f.5052c318e1766a0a9405f10708f43188.0;i=acbb7
Via: SIP/2.0/TCP  xxx.xxx.xxx.xxx
:38342;rport=38342;branch=z9hG4bK-55f913-t9-I214262897

What would cause such delays?

I'm running Kamailio 4.1.5

Thanks.

-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <achen at thinkingphones.com>fuze.com

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