[Serusers] Change SDP

Hello All, Basic Concept: I have to change the Path MSRP into SDP field in an INVITE and relay the new INVITE. SDP EXAMPLE: v=0 o=686873200 3372497915 3372497916 IN IP4 80.27.211.205 s=SipSession c=IN IP4 80.27.211.205 t=0 0 m=message 49152 TCP/MSRP * a=direction:active a=accept-types:text/plain a=path:msrp://80.27.211.205:49152/63331682315468750;tcp When I receive the SDP, I have to change "msrp://80.27.211.205:49152", so I execute an script and I obtain the new SDP into file.txt. Now, I need to replace the old msrp path by the new sdp path, which is into file.txt In my ser.cfg: if (method=="INVITE") { exec_msg("printenv SRCIP > /tmp/invite.txt; cat >> /tmp/invite.txt; /bin/bash /usr/local/ser_snapshot/sbin/controlador"); #I have the new SDP in /tmp/test.txt exec_msg("set `cat /tmp/test.txt`; %var = $1"); #I have the new SDP in $var replace_all("msrp:\/\/[0-9\.:]{2,20}","%$var"); # I don't know why $var = null!!!! I need that $var = cat /tmp/test.txt but i don't know how to do this!!!!! t_relay(); break; }; Please help me, Thank you very much. Ben. _________________________________________________________________ Busca desde cualquier página Web con una protección excepcional. Consigue la Barra de herramientas de Windows Live hoy mismo y GRATUITAMENTE. http://www.toolbar.live.com