Hello, can someone give me an insight on how should I call pjmedia_master_port_destroy? I'm looking at streamutil.c and I can see it is called unceremoniously by the main thread. Is this a secure way of doing it or the example lacks protective code for concurrent access? I mean, in pjmedia_master_port_destroy, u_port and d_port are destroyed but they would be accessed concurrently by master_port's clock_callback before pjmedia_clock_destroy takes effect. Regards, Takeshi