GCDAsyncSocket background VOIP
问题 I'm trying to implement this(Configuring Sockets for VoIP Usage) using this(CocoaAsyncSocket). To the best of my knowledge step 1 I have done, adding VOIP to background services in the plist, and below should be step 2 (Configure one of the app’s sockets for VoIP usage) - (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)connectedPort { [CCV setLocalMode:FALSE]; [socket performBlock:^{ [socket enableBackgroundingOnSocket]; }]; But the rest of the steps I