Hello, i want implement iOS background support for incoming calls. My SIP-Server use UDP for SIP transport and i am not able to receive on_incoming_call callback in background mode. Now i am not sure if it is really only possible with tcp? Since i see in r3299 something like iOS4 background feature : "recreate closed UDP sockets" and in my log file i can see: ioq_select Attempting to replace UDP socket 16 ioq_select UDP has been replaced successfully! best regards, Matthias Meß

2011/2/10 Matthias Meß <matthias@infinatic.de>: > Hello, > i want implement iOS background support for incoming calls. My SIP-Server > use UDP for SIP transport and i am not able to receive > on_incoming_call callback in background mode. Now i am not sure if it is > really only possible with tcp? Since i see in r3299 something like > iOS4 background feature : "recreate closed UDP sockets" and in my log file i > can see: > ioq_select  Attempting to replace UDP socket 16 > ioq_select  UDP has been replaced successfully! iOS offers no support for notifying an application of UDP traffic. The log entries you see are related to RTP/UDP sockets only. Andrea