I am having difficulties forcefully stripping the a:crypto lines from the remote sdp string. At first i was doing <action application="set"><![CDATA[switch_r_sdp=$sdp]]>

</action>

from the diaplan, but this breaks the proxy media easily, because it doesn't patch the SDP later for glueing.

I commented the following lines where the patcher is checking if the sdp string has been set before :

void sofia_glue_tech_patch_sdp(private_object_t *tech_pvt)

{

switch_size_t len;

char *p, *q, *pe, *qe;

int has_video = 0, has_audio = 0, has_ip = 0;

char port_buf[25] = "";

char vport_buf[25] = "";

char *new_sdp;

int bad = 0;

if (zstr(tech_pvt->local_sdp_str)) {

return;

}

And now i got the correct sdp sent to the b-leg(patched for proxy media and nat), but no audio is going either way. Would there be a more clever way to "rip" some lines from the SDP and not break the NAT/Proxy media processing afterwards?

Help is much appreciated.