[SR-Users] How to use port number using $env in listen

[Syed Shahryar]

I ran different combinations of the following simple configuration file but
still getting errors on 'listen':

#!KAMAILIO

loadmodule "pv.so"

#!define TLS_IP "0.0.0.0"

// #!define TLS_PORT $env(TLS_PORT)
//#!substdefs "/TLS_PORT/$env(TLS_PORT)/"
#!defenv TLS_PORT=TLS_PORT

#listen=udp:TLS_IP:TLS_PORT name "UDP_SOCKET"
listen=udp:TLS_IP:$env(TLS_PORT) name "UDP_SOCKET"


//// ERROR Lines ////

kamailio         |  0(6) CRITICAL: <core> [core/cfg.y:3588]: yyerror_at():
parse error in config file /usr/local/etc/kamailio/kamailio.test.cfg, line
11, column 19-26: syntax error

kamailio         |  0(6) CRITICAL: <core> [core/cfg.y:3588]: yyerror_at():
parse error in config file /usr/local/etc/kamailio/kamailio.test.cfg, line
11, column 19-26: ip address, interface name or hostname expected

kamailio         |  0(6) CRITICAL: <core> [core/cfg.y:3588]: yyerror_at():
parse error in config file /usr/local/etc/kamailio/kamailio.test.cfg, line
11, column 28-31:

kamailio         | ERROR: bad config file (3 errors)



>> Probably env and def variable should be relocated to core, not having
SIP/runtime dependency, to facilitate their use during start up.
Good idea!


On Tue, Dec 22, 2020 at 3:59 AM Daniel-Constantin Mierla <miconda at gmail.com>
wrote:

> You have to put the the #!subst and listen after loading pv module.
>
> Probably env and def variable should be relocated to core, not having
> SIP/runtime dependency, to facilitate their use during start up.
>
> Cheers,
> Daniel
>
> On 22.12.20 06:58, Syed Shahryar wrote:
>
> Any updates on this?
>
> On Tue, Dec 15, 2020 at 8:13 PM Syed Shahryar <syedshahryar at gmail.com>
> wrote:
>
>> I am new to Kamailio so may be doing something wrong. I looked at
>> https://www.kamailio.org/wiki/cookbooks/5.4.x/core.
>>
>> I tried the following combinations but getting errors in all cases:
>>
>> #!subst "/EVAPI_PORT/$env(EVAPI_PORT)/"
>> #!substdef "/EVAPI_PORT/$env(EVAPI_PORT)/"
>> #!substdefs "/EVAPI_PORT/$env(EVAPI_PORT)/"
>>
>> *Errors:*
>>  0(6) ERROR: <core> [core/pvapi.c:924]: pv_parse_spec2(): error searching
>> pvar "env"
>>  0(6) ERROR: <core> [core/pvapi.c:1127]: pv_parse_spec2(): wrong char
>> [E/69] in [$env(EVAPI_PORT)/] at [5 (5)]
>>  0(6) ERROR: <core> [core/re.c:170]: parse_repl(): bad specifier in
>> replace part /$env(EVAPI_PORT)/
>>  0(6) ERROR: <core> [core/ppcfg.c:69]: pp_subst_add(): bad subst
>> expression: /EVAPI_PORT/$env(EVAPI_PORT)/
>>
>> At a later step, I would like to do:
>> #!define EVAPI_LISTEN "0.0.0.0:EVAPI_PORT"
>>
>> And use EVAP_LISTEN in mod_param for the evapi module.
>>
>> And something similar to above for TLS settings.
>>
>>
>> On Tue, Dec 15, 2020 at 12:41 PM Daniel-Constantin Mierla <
>> miconda at gmail.com> wrote:
>>
>>> Hello,
>>>
>>> as written on the tracker, look at using #!subst or #!substdef (see core
>>> cookbook), they should be able to get the substitution value from
>>> environment using $env(NAME).
>>>
>>> The master branch introduced #!defenv as a (simpler) alternative.
>>>
>>> Cheers,
>>> Daniel
>>> On 12.12.20 05:33, Syed Shahryar wrote:
>>>
>>> I tried many combinations of the following but I keep getting syntax
>>> errors:
>>>
>>> listen=tls:TLS_IP:$env(TLS_PORT) advertise PUBLIC_IP:$env(TLS_PORT)
>>>
>>>
>>> TLS_IP and PUBLIC_IP are constants defined at the top using #!define.
>>> And, TLS_PORT is supposed to be the env variable.
>>>
>>>
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