sender

sender.swift

    public class func askDevice() -> NSData?{
        
//        devicePacket packet = {PACKET_HEADER_HEAD,0,PACKET_HEADER_DEVICE_ID_UNKNOWN,COMMAND_ASK_DEVICE,0};
//
//        size_t headerSize = sizeof(packet.deviceHeader);
//        size_t contentSize = 0;
//        size_t size = headerSize + contentSize;
//        packet.deviceHeader.len = contentSize;
//        
//        packet.deviceHeader.checksum = [self checksumWithBytes:(Byte *)&packet.deviceHeader WithSize:(int)size];
//        
//        return [self structToNSMutableData:&packet size:size];
        
        var packet = packetFactory.sender(devicePacketHeader.commandType.ASK_DEVICE, content: devicePacketNil())
        if packet{
            return packet?.pack()
        }
        return nil
    }
    
    public class func askVersion() -> NSData?{
        return packetFactory.sender(devicePacketHeader.commandType.ASK_VERSION, content: devicePacketNil())?.pack()
    }