Hi, I am using pjsip on iOS. Occasionally, I get crash when the app is registering with PBX. Says that assertion fail - header is NULL. It seems to happen when IP of the client is changed. Here is the stack trace: 0 ... libsystem_kernel.dylib__pthread_kill + 8 1 libsystem_c.dylibpthread_kill + 58 2 libsystem_c.dylibabort + 94 3 libsystem_c.dylibbasename 4 Appregc_cb + 1278942 5 App regc_tsx_callback + 1258804 6 App mod_util_on_tsx_state + 1198072 7 App tsx_set_state + 1188264 8 App tsx_on_state_proceeding_uac + 1189458 9 App tsx_on_state_calling + 1189148 10 App pjsip_tsx_recv_msg + 1194610 11 App mod_tsx_layer_on_rx_response + 1186680 12 App pjsip_endpt_process_rx_data + 1152024 13 App endpt_on_rx_msg + 1153874 14 App pjsip_tpmgr_receive_packet + 1164268 15 App on_data_read + 1174244 16 App ioqueue_on_read_complete + 1379628 17 App ioqueue_dispatch_read_event + 1367908 18 App pj_ioqueue_poll + 1368510 19 App pjsip_endpt_handle_events2 + 1152298 20 App worker_thread + 1305494 21 App thread_main + 1371660 22 libsystem_c.dylib _pthread_start + 308 Thanks! Raymoond Tang -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130225/e805f4a1/attachment-0001.html>