[SR-Users] sdp manipulation in connection with rtpengine_offer/answer calls

[Daniel Tryba]

On Monday 10 August 2015 12:24:10 Camille Oudot wrote:
> There is a `write_sdp_pv` parameter in the rtpengine module that makes
> rtpengine return the new SDP in a variable rather than in the message
> body.

How does that work? Setting the parameter like in the module doc results in:
 0(21343) ERROR: <core> [modparam.c:139]: set_mod_param_regex(): parameter 
<write_sdp_avp> of type <1> not found in module <rtpengine>
 0(21343) : <core> [cfg.y:3435]: yyerror_at(): parse error in config file 
/etc/kamailio/kamailio.cfg, line 315, column 60: Can't set module parameter

315 being modparam("rtpengine", "write_sdp_avp", "$avp(sdp)")
version: kamailio 4.3.1 (x86_64/linux)