I have made some additionnal test for sip.c, and I encounter a problem:
if we do 2 tests, one with udp and the other with tcp, the first
test will pass, but the second test will be ignored, and be treated
like a retransmission
(case of 2 tests within one second)
So, I join a little workaround for sip.c, in order to differenciate the 2 tests :