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Hi We are currently using the PJSIP Version 2.5.5 and we always run in a soft deadlock situation. We are using SIP INFOs for sending commands from our backend to our client which uses PJSIP. The problem exists when the backend sends a SIP
INFO (5) including a command to the sip client and the sip stack answers with SIP OK(6). At the same time when the sip client sends the SIP OK(6) the backend sends a re-Invite(9). The SIP OK(10) for the re-Invite is delayed due to the fact that the sip clients
answers to the SIP INFO(5) with another SIP INFO(7) which is never send because of a pjsua_call.c timeout. When the re-Invite(9) is send 20 to 30ms later there is no problem and the SIP INFO(7) is send correctly. So the question is how we can avoid this soft
deadlock? Is this problem known? ERROR: pjsua_call.c !.Timed-out trying to acquire dialog mutex (possibly system has deadlocked) in pjsua_call_send_request Backend SIP Client 01|------------------SIP Invite-------------------- >| 02|< ------------------Trying----------------------- | 03|< ------------------SIP OK----------------------- | 04|-----------------ACK---------------------------- >| … 05|------------------SIP INFO--------------------- >| 06|< ------------------SIP OK----------------------- | -------------------- not send start ------------------- 07|------------------SIP INFO--------------------- >| 08|< ------------------SIP OK----------------------- | -------------------- not send stop -------------------- 09|----------------re-Invite----------------------- >| … delay of 2s 10|< ------------------SIP OK----------------------- | |
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