private LifxResponse ParseMessage(byte[] packet)
{
using (MemoryStream ms = new MemoryStream(packet))
{
var header = new FrameHeader();
BinaryReader br = new BinaryReader(ms);
//frame
var size = br.ReadUInt16();
if (packet.Length != size || size < 36)
{
throw new Exception("Invalid packet");
}
var a = br.ReadUInt16(); //origin:2, reserved:1, addressable:1, protocol:12
var source = br.ReadUInt32();
//frame address
byte[] target = br.ReadBytes(8);
header.TargetMacAddress = target;
ms.Seek(6, SeekOrigin.Current); //skip reserved
var b = br.ReadByte(); //reserved:6, ack_required:1, res_required:1,
header.Sequence = br.ReadByte();
//protocol header
var nanoseconds = br.ReadUInt64();
header.AtTime = Utilities.Epoch.AddMilliseconds(nanoseconds * 0.000001);
var type = (MessageType)br.ReadUInt16();
ms.Seek(2, SeekOrigin.Current); //skip reserved
byte[] payload = null;
if (size > 36)
{
payload = br.ReadBytes(size - 36);
}
return(LifxResponse.Create(header, type, source, payload));
}
}
private void ProcessDeviceDiscoveryMessage(HostName remoteAddress, string remotePort, LifxResponse msg)
{
if (DiscoveredBulbs.ContainsKey(remoteAddress.ToString())) //already discovered
{
DiscoveredBulbs[remoteAddress.ToString()].LastSeen = DateTime.UtcNow; //Update datestamp
return;
}
if (msg.Source != discoverSourceID || //did we request the discovery?
_DiscoverCancellationSource == null ||
_DiscoverCancellationSource.IsCancellationRequested) //did we cancel discovery?
return;
var device = new LightBulb()
{
HostName = remoteAddress,
Service = msg.Payload[0],
Port = BitConverter.ToUInt32(msg.Payload, 1),
LastSeen = DateTime.UtcNow
};
DiscoveredBulbs[remoteAddress.ToString()] = device;
devices.Add(device);
if (DeviceDiscovered != null)
{
DeviceDiscovered(this, new DeviceDiscoveryEventArgs() { Device = device });
}
}
internal static LifxResponse Create(FrameHeader header, MessageType type, uint source, byte[] payload)
{
LifxResponse response = null;
switch (type)
{
case MessageType.DeviceAcknowledgement:
response = new AcknowledgementResponse(payload);
break;
case MessageType.DeviceStateLabel:
response = new StateLabelResponse(payload);
break;
case MessageType.LightState:
response = new LightStateResponse(payload);
break;
case MessageType.LightStatePower:
response = new LightPowerResponse(payload);
break;
case MessageType.DeviceStateVersion:
response = new StateVersionResponse(payload);
break;
case MessageType.DeviceStateHostFirmware:
response = new StateHostFirmwareResponse(payload);
break;
case MessageType.DeviceStateService:
response = new StateServiceResponse(payload);
break;
default:
response = new UnknownResponse(payload);
break;
}
response.Header = header;
response.Type = type;
response.Payload = payload;
response.Source = source;
return(response);
}
private void ProcessDeviceDiscoveryMessage(System.Net.IPAddress remoteAddress, int remotePort, LifxResponse msg)
{
string id = msg.Header.TargetMacAddressName; //remoteAddress.ToString()
if (DiscoveredBulbs.ContainsKey(id)) //already discovered
{
DiscoveredBulbs[id].LastSeen = DateTime.UtcNow; //Update datestamp
DiscoveredBulbs[id].HostName = remoteAddress.ToString(); //Update hostname in case IP changed
return;
}
if (msg.Source != discoverSourceID || //did we request the discovery?
_DiscoverCancellationSource == null ||
_DiscoverCancellationSource.IsCancellationRequested) //did we cancel discovery?
{
return;
}
var device = new LightBulb()
{
HostName = remoteAddress.ToString(),
Service = msg.Payload[0],
Port = BitConverter.ToUInt32(msg.Payload, 1),
LastSeen = DateTime.UtcNow,
MacAddress = msg.Header.TargetMacAddress
};
DiscoveredBulbs[id] = device;
devices.Add(device);
if (DeviceDiscovered != null)
{
DeviceDiscovered(this, new DeviceDiscoveryEventArgs()
{
Device = device
});
}
}
private async void ProcessDeviceDiscoveryMessage(HostName remoteAddress, string remotePort, LifxResponse msg)
{
if (DiscoveredBulbs.ContainsKey(remoteAddress.ToString())) //already discovered
{
DiscoveredBulbs[remoteAddress.ToString()].LastSeen = DateTime.UtcNow; //Update datestamp
return;
}
if (msg.Source != discoverSourceID || //did we request the discovery?
_DiscoverCancellationSource == null ||
_DiscoverCancellationSource.IsCancellationRequested) //did we cancel discovery?
{
return;
}
var device = new LightBulb
{
HostName = remoteAddress,
Service = msg.Payload[0],
Port = BitConverter.ToUInt32(msg.Payload, 1),
LastSeen = DateTime.UtcNow
};
device.State = await GetLightStateAsync(device);
DiscoveredBulbs[remoteAddress.ToString()] = device;
device.State = await GetLightStateAsync(device);
// device.IsOn = await GetLightPowerAsync(device);
devices.Add(device);
if (DeviceDiscovered != null)
{
DeviceDiscovered(this, new DeviceDiscoveryEventArgs {
Device = device
});
}
}