Hello,

in failure route the sip message is cloned in shared memory, with many references to shared memory buffer, as well as shorter size (just to fit the sip message) of the buffer storing the message (the core used a private memory buffer to max capacity configured for message size).

Changing these shared memory references and buffers will be a lot of operations.

If you intend to work on it, then make it configurable and in first phase a compile time option with #define/#ifdef macros. Such change will have a lot of effects, so it is better to have an easy way to switch on/off.

Cheers,
Daniel

On 18/12/15 15:55, smititelu wrote:

Hello,

I don't understand why msg_apply changes() can be called from REQUEST_ROUTE only. Can someone explain? Can this be extended to FAILURE_ROUTES also?

Basically I need to call this from FAILURE_ROUTES in order to avoid double SDP for rtpengine offers. Searching in the mailing list I could see that there could be other means of handling this like keeping and reading the SDP from an avp(write/read_sdp_pv), but I find the above method pretty straightforward.

Thanks,
Stefan
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