Hi, I have just made some tests with sst-module (OpenSER v1.3) and I found the following two issues:
I case the min-se value of sst-module is higher than the Session-Expires header field of a received INVITE OpenSER rejects the INVITE request with 422 response (that's as expected). But:
1. the Min-SE header field in 422 response (packet 18 in attached trace) does not end with CR/LF so that it is concatenated with the next header field (Server header)
syslog prints in this case: ERROR:sst:sst_dialog_terminate_CB: DID 0xb5582d80 failed (canceled). Terminating session.
2. OpenSER in addition continues to forward the already rejected INVITE transaction with "100 Giving a try"(packet 19) and forwards the INVITE to the UAS (packet 20).
The next issue I discovered is with the UAC (Xlite): The repeated INVITE (caused by the 422 Response) does not increment the CSeq header field so that it is regarded as same request leading to a "482 Merged request" rejection at the UAS (Eyebeam).
I have attached the tcpdump-trace and the according SIP-scenario trace.
Any comments appreciated.
Regards Franz
Hi again,
- OpenSER in addition continues to forward the already rejected INVITE
transaction with "100 Giving a try"(packet 19) and forwards the INVITE to the UAS (packet 20).
The next issue I discovered is with the UAC (Xlite): The repeated INVITE (caused by the 422 Response) does not increment the CSeq header field so that it is regarded as same request leading to a "482 Merged request" rejection at the UAS (Eyebeam).
I have another trace-file attached without above mentioned Xlite-problem. Eybeam correctly increases CSeq header field and so two "different" INVITE requests (packet 14 and 16) arrive at the peer client.
Best regards and a peaceful and happy new year to everyone. Franz
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Franz Edler