Hi, if i made testcalls with very short incomming calls (<1sec) it happens, that incomming CANCEL messages wasn't handled by stack. Here is the log: I used Version V1.4 regards mark #OK incomming call will proceed everything is fine: VOIP2009/09/16 12:05:19.628 -HDL- cSipWrapper.cxx(1140) strm0x2b8184 Decoder stream started VOIP2009/09/16 12:05:19.646 -HDL- cSipWrapper.cxx(2037) SAG OnStreamCreated CALL-ID:8 VOIP2009/09/16 12:05:19.664 -HDL- cSipWrapper.cxx(1307) SCO InitMediaCall CALL_ID:8 PTime:40 SPF:320 VOIP2009/09/16 12:05:19.684 -HDL- cSipWrapper.cxx(1140) conference.c Creating conference bridge with 4 ports VOIP2009/09/16 12:05:19.711 -HDL- cSipWrapper.cxx(2043) SAG CALL-ID:8 BC:0 VOIP2009/09/16 12:05:19.730 -HDL- cSipWrapper.cxx(1140) pjsua_media.c Media updates, stream #0: PCMU (sendrecv) VOIP2009/09/16 12:05:19.750 -HDL- cSipWrapper.cxx(1103) SRW OnCallMedia:MediaActiv CALL-ID:8 VOIP2009/09/16 12:05:19.770 -HDL- cSipWrapper.cxx(489) SWR SSP Register Slot:2 VOIP2009/09/16 12:05:19.788 -HDL- cSipWrapper.cxx(1140) conference.c Port 1 (CALL) transmitting to port 2 (SSP) VOIP2009/09/16 12:05:19.811 -HDL- cSipWrapper.cxx(500) SRW SSP Channel CALL-ID:8 SrcID:1 SnkID:2 CNT:3 DEV:/dev/mySSP1 VOIP2009/09/16 12:05:19.835 -HDL- cSipWrapper.cxx(1140) inv0x2b1894 Sending Response msg 200/INVITE/cseq=5448 (tdta0x2b6650) VOIP2009/09/16 12:05:19.904 -HDL- cSipWrapper.cxx(1140) dlg0x2b1894 Sending Response msg 200/INVITE/cseq=5448 (tdta0x2b6650) VOIP2009/09/16 12:05:19.924 -HDL- cSipWrapper.cxx(1140) tsx0x2b4c7c Sending Response msg 200/INVITE/cseq=5448 (tdta0x2b6650) in state Proceeding VOIP2009/09/16 12:05:19.947 -HDL- cSipWrapper.cxx(1140) tsx0x2b4c7c State changed from Proceeding to Completed, event=TX_MSG VOIP2009/09/16 12:05:19.968 -HDL- cSipWrapper.cxx(1140) dlg0x2b1894 Transaction tsx0x2b4c7c state changed to Completed VOIP2009/09/16 12:05:19.988 -HDL- cSipWrapper.cxx(1017) SRW OnCallState CALL-ID:8 ST:4 # here comes the CANCEL Message from the opposite: VOIP2009/09/16 12:05:20.006 ThreadID=0x00020009 cSipWrapper.cxx(1140) sip_endpoint.c Processing incoming message: Request msg CANCEL/cseq=5448 (rdata0x41a23854) VOIP2009/09/16 12:05:20.022 ThreadID=0x00020009 cSipWrapper.cxx(1140) dlg0x2b1894 Received Request msg CANCEL/cseq=5448 (rdata0x41a23854) VOIP2009/09/16 12:05:20.049 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2bece4 Transaction created for Request msg CANCEL/cseq=5448 (rdata0x41a23854) VOIP2009/09/16 12:05:20.070 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2bece4 Incoming Request msg CANCEL/cseq=5448 (rdata0x41a23854) in state Null # the CANCEL message response will created VOIP2009/09/16 12:05:20.091 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2bece4 State changed from Null to Trying, event=RX_MSG VOIP2009/09/16 12:05:20.110 ThreadID=0x00020009 cSipWrapper.cxx(1140) dlg0x2b1894 Transaction tsx0x2bece4 state changed to Trying VOIP2009/09/16 12:05:20.129 ThreadID=0x00020009 cSipWrapper.cxx(1140) endpoint Response msg 200/CANCEL/cseq=5448 (tdta0x2bf488) created VOIP2009/09/16 12:05:20.150 ThreadID=0x00020009 cSipWrapper.cxx(1140) dlg0x2b1894 Sending Response msg 200/CANCEL/cseq=5448 (tdta0x2bf488) VOIP2009/09/16 12:05:20.169 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2bece4 Sending Response msg 200/CANCEL/cseq=5448 (tdta0x2bf488) in state Trying # and here i expecting a change to "disconnecting" state but nothing happens !!!! the call looks like connected forever... VOIP2009/09/16 12:05:20.192 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2bece4 State changed from Trying to Completed, event=TX_MSG VOIP2009/09/16 12:05:20.213 ThreadID=0x00020009 cSipWrapper.cxx(1140) dlg0x2b1894 Transaction tsx0x2bece4 state changed to Completed VOIP2009/09/16 12:05:20.232 ThreadID=0x00020009 cSipWrapper.cxx(1017) SRW OnCallState CALL-ID:8 ST:4 VOIP2009/09/16 12:05:20.250 ThreadID=0x00020009 cSipWrapper.cxx(1017) SRW OnCallState CALL-ID:8 ST:4 VOIP2009/09/16 12:05:20.268 ThreadID=0x00020009 cSipWrapper.cxx(1140) sip_endpoint.c Processing incoming message: Request msg ACK/cseq=5448 (rdata0x41a23854) VOIP2009/09/16 12:05:20.289 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2b4c7c Incoming Request msg ACK/cseq=5448 (rdata0x41a23854) in state Completed VOIP2009/09/16 12:05:20.317 ThreadID=0x00020009 cSipWrapper.cxx(1140) tsx0x2b4c7c State changed from Completed to Confirmed, event=RX_MSG VOIP2009/09/16 12:05:20.345 ThreadID=0x00020009 cSipWrapper.cxx(1140) dlg0x2b1894 Transaction tsx0x2b4c7c state changed to Confirmed VOIP2009/09/16 12:05:20.362 ThreadID=0x00020009 cSipWrapper.cxx(1017) SRW OnCallState CALL-ID:8 ST:5 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090916/dade1d2c/attachment.html>