IOBluetooth code to log when devices are connected and disconnected

bluetooth-connection.m

// clang -o bluetooth-connection bluetooth-connection.m -framework Foundation -framework IOBluetooth

#import <Foundation/Foundation.h>
#import <IOBluetooth/IOBluetooth.h>

@interface BluetoothConnection : NSObject {
}
@end

@implementation BluetoothConnection

-(id)init {
    self = [super init];
    if (self) {
        [IOBluetoothDevice registerForConnectNotifications:self selector:@selector(deviceIsConnected:fromDevice:)];
    }
    return self;
}

-(void)deviceDidDisconnect:(IOBluetoothUserNotification*)notification fromDevice:(IOBluetoothDevice*)device {
    NSLog(@"%@ (%@) disconnected", [device name], [device addressString]);
}

-(void)deviceIsConnected:(IOBluetoothUserNotification*)notification fromDevice:(IOBluetoothDevice*)device {
    NSLog(@"%@ (%@) connected", [device name], [device addressString]);
    [device registerForDisconnectNotification:self selector:@selector(deviceDidDisconnect:fromDevice:)];
}

@end

int main(int argc, const char *argv[])
{
    @autoreleasepool {
        BluetoothConnection *bluetoothConnection = [[BluetoothConnection alloc] init];
        [[NSRunLoop currentRunLoop] run];
    }
    return 0;
}