Hi, All
Currently, I try to install Kamailio as a partial call-stateful server.
My purpose is:
A call B. (sendrecv)
A hold B (sendonly) A call C(sendrecv)
A hold C (sendonly) A unhold B (sendonly)
Because of Some bugs on A, when I repeat hold/unhold very fast, eg.
A -----B (sendrecv), A ---C (sendonly)
When switch hold/unhold
A send reINVITE to C(sendrecv) before A set B(sendonly), some real proxy
server will reply "491 request pending".
I want to simulate this server with Kamailio. I use setflag. But I find
this flag's lifetime is within a transaction. In a new transaction, the
flag's initial value is 0.
Eg. I plan:
When get sendrecv in SDP of INVITE request, I setflag(11). //flag 11
on
When get sendonly in SDP of INVITE request, I resetflag(11). //flag
11 off
When get sendrecv again, if (isFlagSet(11)), I send 491.
But next time when get sendrecv, the flag 11 is 0. even though I comment
the lines I reset the flag.
I wonder if there's any other mechanism that I can use to record the
state and can be used as flag.
Could you give me some hint?
Thanks in advance.
Derrick
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