Hi I am having a crash in case pj_sock_send() fails (Error Code WSACONNRESET). I am using TCP transport. In this case when it tries to clear the transaction (sip_transport.c - transport_callback()), it crashes when it tries to lock the transaction mutex. I have observed that most of the address in tsx structures are not valid. Has anyone faced the similar issue? Any help would be greatly appreciated. I am also attaching the snapshot from debugger. Thanks Kchitiz -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130201/411ae3b1/attachment-0001.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: CrashPjsip.png Type: image/png Size: 182590 bytes Desc: not available URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130201/411ae3b1/attachment-0001.png>