The best bet would probably to be using the call-id from the cdr to generate a link over to homer to look at a particular trace similar to how fisheye and jira work together. On Mon, Jan 7, 2013 at 5:21 PM, Cal Leeming [Simplicity Media Ltd] < cal.leeming@simplicitymedialtd.co.uk> wrote:
From previous experience in web development, I know that sometimes the most obvious way isn't the right way.
So, until I've tried it myself, I really can't say whether or not having the packets with the CDRs would be the right/wrong thing to do.
However, HOMER on a switch port mirror looks very interesting - thank you for this recommendation.
I'm going to be spending some time looking into all these different approaches, then I'll post back once I'm a bit more exposed to it.
Really appreciate the feedback from everyone on this
Cal
On Mon, Jan 7, 2013 at 9:46 PM, Steven Ayre <steveayre@gmail.com> wrote:
I have.
Personally I use my own custom daemon that simply uses libpcap to capture and logs packets on port 5060/5080 to pcap files rotated on time/size limits which're stored for N days then deleted by a cronjob.
I agree a separate project is probably a good way to log the SIP traffic...
Cal, a project like Homer allows you to capture the SIP traffic from a separate server on the same LAN segment or using a monitor port of a managed switch. That offloads the SIP capture entirely away from the CPU/Disk of the SIP server, which can have performance benefits for your softswitch server. Additionally using a pcap file format can have other benefits, since it allows you to use existing tools like wireshark for analysis. Searching for a call in a pcap file is trivial using the Call-ID header which you'll have in the sip_call_id channel variable.
That said, the idea of storing a history of the received SIP packets within the CDR itself is interesting and would have benefits on simpler installs such as a small office PBX - although I wouldn't necessarily do it by default.
-Steve
On 7 January 2013 21:16, Anthony Minessale <anthony.minessale@gmail.com> wrote:
have you seen the homer project?
On Mon, Jan 7, 2013 at 3:03 PM, Steven Ayre <steveayre@gmail.com> wrote:
Current logging is the Sofia-SIP stack calling the sofia.c:logger() callback for the transport log. At this level packets are not attached to any call, so matching it to a call would require a 2nd parsing of the packet and matching it based on Call-ID... it would be quite a performance hit.
The callback functions where mod_sofia handles a packet matched to a call receives the packet from the Sofia-SIP stack via the sip_t data structure. This contains the parsed message, not the raw packet. This makes it unsuitable for logging. I'm not sure if any other parameters passed to the callback contain the raw packet, which would be required to implement the feature. One of the mod_sofia developers would have a better grasp of the Sofia-SIP API though.
-Steve
On 7 January 2013 20:40, Lloyd Aloysius <lloyd.aloysius@gmail.com>
wrote:
I saw a demo from siproutes carrier. Their cdr have sip trace for every record and they keep for three months , then archive.
It is awesome if freeswitch attach sip trace to the cdr. May be we can setup a bounty for this.
On Mon, Jan 7, 2013 at 9:17 AM, Saugort Dario Garcia Tovar <dgarcia@anew.com.ve> wrote:
Hi Cal,
Also I use this way to get a sip trace with filter criterias. Take a look to this link:
http://www.jonathanmanning.com/2009/10/26/how-to-voip-sip-capture-with-tcpdu...
With Wireshark you can apply additional filter
On 1/6/2013 3:31 PM, Cal Leeming [Simplicity Media Ltd] wrote:
Could a core dev speculate on how much the expected bounty would be
for
this?
Thanks
Cal
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