[sr-dev] Problem with app_mono module

[Daniel-Constantin Mierla]

Hello,

On 3/28/12 3:13 PM, Pirjo Ahvenainen wrote:
> Hi all,
>
> I've been playing with the new mono api on the development version of
> Kamailio. I'm having some problems with it, perhaps there's something
> someone here knows that would help. If there's a better place to post
> this question please guide me to the right direction.
>
> I'm using CentOS 6.2, installed mono with yum, the mono version is 2.4.3.1.

the module was developed and tested on debian/ubuntu, however it should 
work with mono >2.8.

The docs for embedding mono which were used are:
   * http://www.mono-project.com/Embedding_Mono

and the build params needed are for 'mono-2'. See:
   * http://www.mono-project.com/Embedding_Mono#Compiling_and_Linking

Cheers,
Daniel

>
>
>
> I had problems compiling the app_mono module, I got errors like:
>
> Package mono-2 was not found in the pkg-config search path.
> Perhaps you should add the directory containing `mono-2.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'mono-2' found
> ...
>
> So I changed the makefile to the one below (replaced "mono-2" to
> "mono" from the default). Then got it compiled and app_mono.so was
> generated. I don't know much about makefiles but me guessing what to
> do with it got the thing compiled.
>
> #
> #
>
> include ../../Makefile.defs
> auto_gen=
> NAME=app_mono.so
>
> BUILDER = $(shell which pkg-config)
> ifeq ($(BUILDER),)
>          DEFS+=-D_REENTRANT -I/usr/include/mono
>          LIBS= -lmono -lm -lrt -ldl -lpthread
> else
>          DEFS+= $(shell pkg-config --cflags mono)
>          LIBS = $(shell pkg-config --libs mono)
> endif
>
> DEFS+=-DOPENSER_MOD_INTERFACE
>
> SERLIBPATH=../../lib
> SER_LIBS+=$(SERLIBPATH)/kcore/kcore
>
> include ../../Makefile.modules
>
>
>
>
> Then I compiled Kamailio with the app_mono module included, during
> compilation I got output like this:
>
> [root at monotest kamailio]# make all
> CC (gcc) [M app_mono.so]                app_mono_api.o
> app_mono_api.c: In function âsr_mono_logâ:
> app_mono_api.c:318: warning: implicit declaration of function âmono_freeâ
> CC (gcc) [M app_mono.so]                app_mono_mod.o
> make[2]: `libkcore.so.1.0' is up to date.
> LD (gcc) [M app_mono.so]                app_mono.so
> ...
>
>
>
>
> I added my params on the config:
> loadmodule "app_mono.so"
> ...
> modparam("app_mono", "load", "/usr/local/etc/kamailio/mono/MonoTest1.exe")
>
>
>
> Everything compiled though and I did not notice any errors. However,
> there must be something wrong with either my environment, mono
> version, compiling something or something else, command kamailio -c
> gives output with errors (note the warning before and the error below
> about mono_free):
>
> [root at monotest kamailio]# kamailio -c
> loading modules under
> /usr/local/lib/kamailio/modules_k/:/usr/local/lib/kamailio/modules/
>   0(26471) ERROR:<core>  [sr_module.c:572]: ERROR: load_module: could
> not open module
>
> </usr/local/lib/kamailio/modules/app_mono.so>:
> /usr/local/lib/kamailio/modules/app_mono.so: undefined symbol:
>
> mono_free
>   0(26471) :<core>  [cfg.y:3565]: parse error in config file
> /usr/local/etc/kamailio/modules.cfg, line 90, column
>
> 12-24: failed to load module
>   0(26471) ERROR:<core>  [modparam.c:162]: set_mod_param_regex: No
> module matching<app_mono>  found
>   0(26471) :<core>  [cfg.y:3568]: parse error in config file
> /usr/local/etc/kamailio/modules.cfg, line 281,
>
> column 74: Can't set module parameter
>   0(26471) ERROR:<core>  [cfg.y:3429]: cfg. parser: failed to find
> command mono_run
>
>
>
> Any ideas on what's the problem?
>
> I'll try the same on Ubuntu to compare but any suggestions and advice
> would be appreciated!
>
>
> cheers,
> Pirjo Ahvenainen
>
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-- 
Daniel-Constantin Mierla
Kamailio Advanced Training, April 23-26, 2012, Berlin, Germany
http://www.asipto.com/index.php/kamailio-advanced-training/