[OpenSIPS-Devel] [opensips] rtpengine module randomly sending wrong SIP response (#433)

[Rob Gagnon]

More info as I am looking for the solution in case anyone else wants to be a detective....

In configuration, this is set during route[]
```$var(rtp_params) = "replace-origin ICE=remove replace-session-connection";```
then, during INVITE with SDP:
```if (rtpengine_offer("$var(rtp_params)")) {```
and finally during onreply_route[] with SDP:
```rtpengine_answer("$var(rtp_params)");```

What is happening is SOMETIMES, $var(rtp_params) is NULL before it gets sent into rtpengine_answer().

If I change all instances of the variable to just be the hard-coded string of flags, then everything works fine.  In fact, the $var is NEVER null in the onreply_route[] when I do that.

My belief now is that rtpengine_offer() is somehow NULLifying the value of the $var as if it were passed by reference, but only SOMETIMES.


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Reply to this email directly or view it on GitHub:
https://github.com/OpenSIPS/opensips/issues/433#issuecomment-83204079
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