无法连接到BLE外设

Question

我似乎无法从OSX连接到BLE外设。我可以扫描得很好，但连接永远不会发生。我正在保存CBPeripheral*对象的本地副本 - 实际上，我可以查询它并且连接状态是CBPeripheralStateConnecting，如果我取消连接，它将更改回CBPeripheralStateDisconnected。但它实际上从未连接 - 状态不会更改为CBPeripheralStateConnected，并且我的连接回调都不会被调用。

我可以使用LightBlue OSX应用程序连接，扫描服务和读取特征，所以我知道我的加密狗很好。我的代码基于别人的代码，我知道代码对他有用。我的代码也适用于iOS，但不适用于我的MacBook。我继续前进并升级到El Capitan，但这没有帮助。

我尝试了各种各样的事情：将已发现的外围对象保存在一个数组中，保存我正在连接到的属性中的外围设备，将调用发送到connectPeripheral到主线程......没有运气。代码的相关部分如下，my entire BLE code is in a gist。

- (id) init {
    if (self = [super init]) {
        _peripherals = [NSMutableArray new];
        _connecting = nil;
        eventlock = [[NSLock alloc] init];
        events = [[NSMutableArray alloc] init];
        central = [[CBCentralManager alloc] initWithDelegate:self
                                            queue:dispatch_get_main_queue()];
    }
    return self;
}

- (void) addPeripheral:(CBPeripheral *)peripheral {
    if (![self.peripherals containsObject:peripheral]) {
        NSLog(@"saving peripheral");
        [self.peripherals addObject:peripheral];
    }
}

- (void) connectPeripheral:(CBPeripheral *)peripheral {
    if (![self.peripherals containsObject:peripheral]) {
        NSLog(@"error: connect to invalid peripheral");
        return;
    }
    __weak cbcentral *this = self;
    NSLog(@"dispatch connect peripheral");
    self.connecting = peripheral;
    dispatch_async(dispatch_get_main_queue(), ^{
        NSLog(@"connect peripheral");
        //this.connecting = peripheral;
        [central connectPeripheral:this.connecting
                 options:nil];
    });
}

#pragma mark CBCentralManagerDelegate

- (void) centralManager:(CBCentralManager *)central
         didDiscoverPeripheral:(CBPeripheral *)peripheral
         advertisementData:(NSDictionary *)advertisementData
         RSSI:(NSNumber *)RSSI {
    NSLog(@"did discover peripheral");
    [self addPeripheral:peripheral];
    NSArray* event = [[NSArray alloc] initWithObjects:@"centralManager_didDiscoverPeripheral_advertisementData_RSSI_",
                                                      central,
                                                      peripheral,
                                                      advertisementData,
                                                      RSSI,
                                                      nil];
    [self queueEvent:event];
}

- (void) centralManager:(CBCentralManager *)central
         didConnectPeripheral:(CBPeripheral *)peripheral {
    NSLog(@"did connect peripheral");
    [self addPeripheral:peripheral];
    NSArray* event = [[NSArray alloc] initWithObjects:@"centralManager_didConnectPeripheral_",
                                                      central,
                                                      peripheral,
                                                      nil];
    [self queueEvent:event];
}