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My App Requirement : I should maintain a socket connection to trigger local notification on server push without using Push Notification(APNs) for some reasons. So I am using the VOIP background capability of iPhone to maintain socket connection. 1. I have configured a stream for VOIP in order to persist socket connection to run in background, so what Timeout value should I set? Will the socket connection terminates once the timeout expires? How do I make my application to listen to the socket all the time.? Client stream configuration is as follows, NSString *urlStr = @"http://192.168.0.108"; NSURL *website = [NSURL URLWithString:urlStr]; CFReadStreamRef readStream; CFWriteStreamRef writeStream; CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)[website host], 1234, &readStream, &writeStream); CFReadStreamSetProperty(readStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP); CFWriteStreamSetProperty(writeStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP); NSInputStream *inputStream = (NSInputStream *)readStream; NSOutputStream *outputStream = (NSOutputStream *)writeStream; [inputStream setDelegate:self]; [inputStream setProperty:NSStreamNetworkServiceTypeVoIP forKey:NSStreamNetworkServiceType] ; [outputStream setDelegate:self]; [outputStream setProperty:NSStreamNetworkServiceTypeVoIP forKey:NSStreamNetworkServiceType] ; [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [inputStream open]; [outputStream open]; 2. Should I reconnect the stream in the handler applicationDidEnterBackground: [[UIApplication sharedApplication] setKeepAliveTimeout:86400 handler:^(void) { if (inputStream) [inputStream close]; if (outputStream) [outputStream close];

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