15 Dec
2005
15 Dec
'05
10:26 p.m.
Is there any useful information ANYWHERE about avp's? I mean, don't take this the
wrong way, but I've never had so much trouble interpreting/finding documentation on a
subject. I can't even find out how to print the value of an avp with xlog. Is this
ACTUALLY DOCUMENTED anywhere? I finally found an example somewhere from a newsgroup
posting and used:
xlog ("L_INFO","$avp($foo)");
but openser complains with:
Dec 15 13:21:01 bil-pdev-3 openser[24718]: ERROR:xl_parse_name: unknow avp
alias"foo"
Dec 15 13:21:01 bil-pdev-3 openser[24718]: XLOG:xdbg_fixup: ERROR: wrong
format[$avp($foo)]!
-----Original Message-----
From: Bogdan-Andrei Iancu [mailto:bogdan@voice-system.ro]
Sent: Thursday, December 15, 2005 3:43 AM
To: Douglas Garstang
Cc: users(a)openser.org
Subject: Re: [Users] Variables
Hi Doug,
use avp_printf() or avp_subst() to process the content of an avp - this
function covers the assigning operation.
regards,
bogdan
Douglas Garstang wrote:
All,
I can't find any documentation of OpenSER use of variables. I'm sending a lot of
info to syslog with xlog(), and with multiple threads (processes?) and multiple calls
running, all the output is out of sequence. As a result, I'd like to prefix the debug
output with the call-id. The call-id however is very long and I'd like to cut it down
and only display a portion of it.
How can I extract a string from a SIP message, cut it up, extract the portion I want, and
print that portion? OpenSER doesn't seem to have any concept of assigning variables
by:
variable = value
Thanks,
Doug.
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16 Dec
16 Dec
1:01 a.m.
New subject: [Users] Variables
Is there any useful information ANYWHERE about
avp's? I mean, don't
take this the wrong way, but I've never had so much trouble
interpreting/finding documentation on a subject.
At http://www.openser.org there's a link to this set of tutorials:
http://www.voice-system.ro/docs/
The one about the AVPops module is excellent. I hope this set of
tutorials will grow over time!
Tim
9:42 a.m.
New subject: AVPOPS tutorial (was Re: [Users] Variables)
Douglas Garstang wrote:
Is there any useful information ANYWHERE about
avp's? I mean, don't
take this the wrong way, but I've never had so much trouble
interpreting/finding documentation on a subject. I can't even find
out how to print the value of an avp with xlog. Is this ACTUALLY
DOCUMENTED anywhere? I finally found an example somewhere from a
newsgroup posting and used:
xlog ("L_INFO","$avp($foo)");
but openser complains with:
Dec 15 13:21:01 bil-pdev-3 openser[24718]: ERROR:xl_parse_name:
unknow avp alias"foo" Dec 15 13:21:01 bil-pdev-3 openser[24718]:
XLOG:xdbg_fixup: ERROR: wrong format[$avp($foo)]!
Looks like the AVP alias is unknown. There are two kinds of AVP: integer
based and string based.
http://www.voice-system.ro/docs/avpops/ar01s03.html
e.g.
xlog ("L_INFO","$avp(s:foo)");
will print the AVP with the string name "foo".
xlog ("L_INFO","$avp(i:102)");
will print the AVP 102.
xlog ("L_INFO","$avp($foo)");
will print the AVP with the alias foo
To use alias, you have to configure them:
http://www.voice-system.ro/docs/avpops/ar01s05.html
modparam("avpops","avp_aliases","uuid=I:660;foo=i:102")
Thus, if configured foo=i:102, the following 2 statements are the same:
xlog ("L_INFO","$avp(i:102)");
xlog ("L_INFO","$avp($foo)");
As interger type AVPs are faster I prefer them. In my config I have:
# AVP configuration
# integer aliases (faster than strings)
# i:101 = cbcprefix
# call by call provider prefix
# i:103 = fr_inv_timer
# timer for INVITE transactions
# i:104 = cansipuri
# canonical SIP URI, e.g klaus(a)enum.at
#
# pre defined AVPs:
# s:rpid = Remote-Party-Id
# i:42 = received_avp, used by nathelper and registrar
#
modparam("avpops","avp_aliases","cbcprefix=I:101;fr_inv_timer=i:103;cansipuri=i:104")
# -- tm params --
modparam("tm", "fr_inv_timer_avp", "i:103")
Then, in the routing part I only use the aliases, e.g:
# trigger failure in 28 seconds
avp_write("i:28","$fr_inv_timer");
lookup("aliases");
avp_write("$ruri","$cansipuri"); #store canonical SIP URI
You also should read the examples at the wiki:
http://openser.org/dokuwiki/doku.php?id=avp_examples&DokuWiki=70b22ac08…
regards
Klaus
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2 comments
3 participants
participants (3)
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Douglas Garstang -
Klaus Darilion -
Tim Klein