I not see attached tcpdump PCAP file
ср, 15 нояб. 2017 г. в 14:21, Wilkins, Steve <swwilkins(a)mitre.org>rg>:
Hello,
Kamailio IP: 172.21.1.108, listening on port 5060
Asterisk IP’s: 172.21.1.97, and 172.21.1.124 both listening on port 5060
Here is a tcpdump which has the issue in it. I did a MicroSip call, *which
did work*, and the Error I am speaking of did happen. Note: In this
dump, I am running a cluster of 2 Asterisk Servers, however, this Error
occurs even if I have only one Asterisk server with no dispatching, and
rtpproxy turned off. However if rtpproxy is on, after each call, I do see
an additional error =>
*Nov 14 08:45:08 vadev2 /usr/local/sbin/kamailio[20525]: ERROR: rtpproxy
[rtpproxy.c:2536]: force_rtp_proxy(): incorrect port 0 in reply from rtp
proxy*
In trying to further understand Kamailio –
- Is there a way to limit the port trying to be opened to a maximum
high number E.g. a port of < 20000? Even if this would work, I would still
like to understand what Kamailio is trying to accomplish by the connection
it is trying to make.
- Are there any sources for a more in-depth understanding as to how
Kamailio functions?
Also, if anyone has any input on my second question I would really
appreciate it.
Thank you for looking at this,
-Steve
*From:* sr-users [mailto:sr-users-bounces@lists.kamailio.org] *On Behalf
Of *Sergey Safarov
*Sent:* Tuesday, November 14, 2017 1:33 AM
*To:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
*Subject:* Re: [SR-Users] Kamailio questions
Need to capture network traffic and analyse by wireshark.
Command to capture traffic
tcpdump -ni any host 172.1.1.13 -s 0 -w /tmp/traffic.pcap
вт, 14 нояб. 2017 г., 3:14 Wilkins, Steve <swwilkins(a)mitre.org>rg>:
Hello,
I am new to Kamailio and to the Kamailio Mailing list and hope I am using
it appropriately.
I am using Kamailio version 5.0.3 (x86_64/linux), and it is installed and
working on a Centos 7 Sever. I use Kamailio as a SIP Proxy Server for
Asterisk and things seem to work fine, however, I do have an issue and a
question for which I am trying to understand and am hoping someone can help
me with.
For the sake of the argument, my server name is *myServer*, and it’s IP
Address is *172.1.1.13*; Asterisk is on a different server.
*Issue*: Every 10 seconds I get an Error message in the Kamailio log
which says =>
*Nov 13 18:10:55 myServer /usr/local/sbin/kamailio[29188]: ERROR: <core>
[core/tcp_main.c:2660]: tcpconn_1st_send(): connect **172.1.1.13:59794*
<http://172.1.1.13:59794>* failed (RST) Connection refused.*
I do not know what triggers this error, and as mentioned, things do seem
to work; I can make calls and use sip tools which pass requests through the
Kamailio to Asterisk. Does anyone know what could be causing this Error?
I do not understand *what is trying to connect to what* at such a high
port.
Question: The way I understand it, *rtpproxy* is needed to pass
video/audio through Kamailio to Asterisk. However, even without
*rtpproxy* running, I get video through to Asterisk and the video plays
with no issues on a sip device (e.g. MicroSIP). I am confused what I need
*rtpproxy* for.
Note: Even with no *rtpproxy*, I get the same error mentioned above in
the Issue section.
Thank you,
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_______________________________________________
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