static int worker_thread_ioqueue(void *arg)
{
    pj_ioqueue_t *ioq;

    PJ_UNUSED_ARG(arg);

    ioq = pjsip_endpt_get_ioqueue(pjsua_var.endpt);
    while (!pjsua_var.thread_quit_flag) {
	pj_time_val timeout = {0, 100};
	pj_ioqueue_poll(ioq, &timeout);
    }
    return 0;
}
static int worker_thread_ioqueue(void *arg)
{
    pj_ioqueue_t *ioq;

    PJ_UNUSED_ARG(arg);

    ioq = pjsip_endpt_get_ioqueue(pjsua_var.endpt);
    while (!pjsua_var.thread_quit_flag) {
	pj_time_val timeout = {0, 100};
	pj_ioqueue_poll(ioq, &timeout);
    }
    return 0;
}