Hi! I'm using pj_activesock for using TCP socket in a pjsua app. If I create my own ioqueue and passing this to pj_activesock_create then I can't accept any incoming connection, but I can send data (why?). But if I pass pjsip_endpt_get_ioqueue(pjsua_var.endpt) as ioqueue to pj_activesock_create then I can accept connections so I use this ioqueue. 1. After that If I send to and receive on the !same! Windows Mobile emulator then everything works fine. 2. But if I send and receive on separate devices (using emulators or real devices) then the application network traffic handler part is freezing after a few incoming/outgoing packets (on emulator after 4-5 packets, on device after 200-300 packets) and pjsip simply doesn't call OnDataRead pj_activesock callback any more. I can't debug this problem yet because there is no "runtime error" which could toggle a breakpoint. Almost the same freezing on sender and receiver side. My send and receive code is like in pjlib_test/activesock.c tcp_perf_test. for any hint I would be amazed sry for my english thx & bye, Attila
