private Task <T> BroadcastMessageAsync <T>(string hostName, FrameHeader header, MessageType type, params object[] args)
where T : LifxResponse
{
List <byte> payload = new List <byte>();
if (args != null)
{
foreach (var arg in args)
{
if (arg is UInt16)
{
payload.AddRange(BitConverter.GetBytes((UInt16)arg));
}
else if (arg is UInt32)
{
payload.AddRange(BitConverter.GetBytes((UInt32)arg));
}
else if (arg is byte)
{
payload.Add((byte)arg);
}
else if (arg is byte[])
{
payload.AddRange((byte[])arg);
}
else if (arg is string)
{
payload.AddRange(Encoding.UTF8.GetBytes(((string)arg).PadRight(32).Take(32).ToArray())); //All strings are 32 bytes
}
else
{
throw new NotSupportedException(args.GetType().FullName);
}
}
}
return(BroadcastMessagePayloadAsync <T>(hostName, header, type, payload.ToArray()));
}
/// <summary>
/// Turns a bulb on or off using the provided transition time
/// </summary>
/// <param name="bulb"></param>
/// <param name="transitionDuration"></param>
/// <param name="isOn">True to turn on, false to turn off</param>
/// <returns></returns>
/// <seealso cref="TurnBulbOffAsync(LightBulb, TimeSpan)"/>
/// <seealso cref="TurnBulbOnAsync(LightBulb, TimeSpan)"/>
/// <seealso cref="TurnDeviceOnAsync(Device)"/>
/// <seealso cref="TurnDeviceOffAsync(Device)"/>
/// <seealso cref="SetDevicePowerStateAsync(Device, bool)"/>
/// <seealso cref="GetLightPowerAsync(LightBulb)"/>
public async Task SetLightPowerAsync(LightBulb bulb, TimeSpan transitionDuration, bool isOn)
{
if (bulb == null)
{
throw new ArgumentNullException(nameof(bulb));
}
if (transitionDuration.TotalMilliseconds > uint.MaxValue ||
transitionDuration.Ticks < 0)
{
throw new ArgumentOutOfRangeException(nameof(transitionDuration));
}
FrameHeader header = new FrameHeader(GetNextIdentifier(), true);
var b = BitConverter.GetBytes((ushort)transitionDuration.TotalMilliseconds);
Debug.WriteLine(
$"Sending LightSetPower(on={isOn},duration={transitionDuration.TotalMilliseconds}ms) to {bulb.HostName}");
await BroadcastMessageAsync <AcknowledgementResponse>(bulb.HostName, header, MessageType.LightSetPower,
(ushort)(isOn ? 65535 : 0), b
).ConfigureAwait(false);
}
private async Task SetLightPowerAsync(LightBulb bulb, TimeSpan transitionDuration, bool isOn)
{
if (bulb == null)
{
throw new ArgumentNullException("bulb");
}
if (transitionDuration.TotalMilliseconds > UInt32.MaxValue ||
transitionDuration.Ticks < 0)
{
throw new ArgumentOutOfRangeException("transitionDuration");
}
FrameHeader header = new FrameHeader()
{
Identifier = (uint)randomizer.Next(),
AcknowledgeRequired = true
};
var b = BitConverter.GetBytes((UInt16)transitionDuration.TotalMilliseconds);
await BroadcastMessageAsync <AcknowledgementResponse>(bulb.HostName, header, MessageType.LightSetPower,
(UInt16)(isOn ? 65535 : 0), b
).ConfigureAwait(false);
}
/// <summary>
/// Sets color and temperature for a bulb and uses a transition time to the provided state
/// </summary>
/// <param name="bulb">Light bulb</param>
/// <param name="hue">0..65535</param>
/// <param name="saturation">0..65535</param>
/// <param name="brightness">0..65535</param>
/// <param name="kelvin">2700..9000</param>
/// <param name="transitionDuration"></param>
/// <returns></returns>
public async Task SetColorAsync(LightBulb bulb,
UInt16 hue,
UInt16 saturation,
UInt16 brightness,
UInt16 kelvin,
TimeSpan transitionDuration)
{
if (transitionDuration.TotalMilliseconds > UInt32.MaxValue ||
transitionDuration.Ticks < 0)
{
throw new ArgumentOutOfRangeException("transitionDuration");
}
if (kelvin < 2500 || kelvin > 9000)
{
throw new ArgumentOutOfRangeException("kelvin", "Kelvin must be between 2500 and 9000");
}
System.Diagnostics.Debug.WriteLine("Setting color to {0}", bulb.HostName);
FrameHeader header = new FrameHeader()
{
Identifier = (uint)randomizer.Next(),
AcknowledgeRequired = true
};
UInt32 duration = (UInt32)transitionDuration.TotalMilliseconds;
var durationBytes = BitConverter.GetBytes(duration);
var h = BitConverter.GetBytes(hue);
var s = BitConverter.GetBytes(saturation);
var b = BitConverter.GetBytes(brightness);
var k = BitConverter.GetBytes(kelvin);
await BroadcastMessageAsync <AcknowledgementResponse>(bulb.HostName, header,
MessageType.LightSetColor, (byte)0x00, //reserved
hue, saturation, brightness, kelvin, //HSBK
duration
);
}
/// <summary>
/// Request an arbitrary payload be echoed back.
/// </summary>
/// <param name="device"></param>
/// <param name="payload"></param>
/// <returns><see cref="EchoResponse"/></returns>
/// <exception cref="ArrayTypeMismatchException"></exception>
public async Task <EchoResponse> RequestEcho(Device device, byte[] payload)
{
if (device == null)
{
throw new ArrayTypeMismatchException(nameof(device));
}
FrameHeader header = new FrameHeader(GetNextIdentifier());
// Truncate our input payload to be 64 bits exactly
var realPayload = new byte[64];
for (var i = 0; i < realPayload.Length; i++)
{
if (i < payload.Length)
{
realPayload[i] = payload[i];
}
else
{
realPayload[i] = 0;
}
}
return(await BroadcastMessageAsync <EchoResponse>(device.HostName, header,
MessageType.DeviceEchoRequest, realPayload));
}
internal StateServiceResponse(FrameHeader header, MessageType type, byte[] payload, UInt32 source) : base(header, type, payload, source)
{
Service = payload[0];
Port = BitConverter.ToUInt32(payload, 1);
}
internal AcknowledgementResponse(FrameHeader header, MessageType type, byte[] payload, UInt32 source) : base(header, type, payload, source)
{
}
internal UnknownResponse(FrameHeader header, MessageType type, byte[] payload, UInt32 source) : base(header, type, payload, source)
{
}
internal StateVersionResponse(FrameHeader header, MessageType type, byte[] payload, UInt32 source) : base(header, type, payload, source)
{
Vendor = BitConverter.ToUInt32(payload, 0);
Product = BitConverter.ToUInt32(payload, 4);
Version = BitConverter.ToUInt32(payload, 8);
}
internal InfraredStateRespone(FrameHeader header, MessageType type, byte[] payload, UInt32 source) : base(header, type, payload, source)
{
Brightness = BitConverter.ToUInt16(payload, 0);
}
internal LightPowerResponse(FrameHeader header, MessageType type, byte[] payload, UInt32 source) : base(header, type, payload, source)
{
IsOn = BitConverter.ToUInt16(payload, 0) > 0;
}
private async Task WritePacketToStreamAsync(Stream outStream, FrameHeader header, UInt16 type, byte[] payload)
{
using (var dw = new BinaryWriter(outStream) /*ByteOrder = ByteOrder.LittleEndian*/ }
private async Task <T> BroadcastMessagePayloadAsync <T>(string hostName, FrameHeader header, MessageType type, byte[] payload)
where T : LifxResponse
{
#if DEBUG
/// MemoryStream ms = new MemoryStream();
/// await WritePacketToStreamAsync(ms.AsOutputStream(), header, (UInt16)type, payload).ConfigureAwait(false);
/// var data = ms.ToArray();
/// System.Diagnostics.Debug.WriteLine(
/// string.Join(",", (from a in data select a.ToString("X2")).ToArray()));
#endif
if (hostName == null)
{
hostName = "255.255.255.255";
}
TaskCompletionSource <T> tcs = null;
if (//header.AcknowledgeRequired &&
header.Identifier > 0 &&
typeof(T) != typeof(UnknownResponse))
{
tcs = new TaskCompletionSource <T>();
Action <LifxResponse> action = (r) =>
{
if (!tcs.Task.IsCompleted)
{
if (r.GetType() == typeof(T))
{
tcs.SetResult((T)r);
}
else
{
}
}
};
taskCompletions[header.Identifier] = action;
}
using (MemoryStream stream = new MemoryStream())
{
await WritePacketToStreamAsync(stream, header, (UInt16)type, payload).ConfigureAwait(false);
var msg = stream.ToArray();
await _socket.SendAsync(msg, msg.Length, hostName, Port);
}
//{
// await WritePacketToStreamAsync(stream, header, (UInt16)type, payload).ConfigureAwait(false);
//}
T result = default(T);
if (tcs != null)
{
var _ = Task.Delay(1000).ContinueWith((t) =>
{
if (!t.IsCompleted)
{
tcs.TrySetException(new TimeoutException());
}
});
try {
result = await tcs.Task.ConfigureAwait(false);
}
finally
{
taskCompletions.Remove(header.Identifier);
}
}
return(result);
}
private async Task WritePacketToStreamAsync(IOutputStream outStream, FrameHeader header, UInt16 type, byte[] payload)
{
using (DataWriter dw = new DataWriter(outStream)
{
ByteOrder = ByteOrder.LittleEndian
})
{
//BinaryWriter bw = new BinaryWriter(ms);
#region Frame
//size uint16
dw.WriteUInt16((UInt16)((payload != null ? payload.Length : 0) + 36)); //length
// origin (2 bits, must be 0), reserved (1 bit, must be 0), addressable (1 bit, must be 1), protocol 12 bits must be 0x400) = 0x1400
dw.WriteUInt16(0x3400); //protocol
dw.WriteUInt32(header.Identifier); //source identifier - unique value set by the client, used by responses. If 0, responses are broadcasted instead
#endregion Frame
#region Frame address
//The target device address is 8 bytes long, when using the 6 byte MAC address then left -
//justify the value and zero-fill the last two bytes. A target device address of all zeroes effectively addresses all devices on the local network
dw.WriteBytes(header.TargetMacAddress); // target mac address - 0 means all devices
dw.WriteBytes(new byte[] { 0, 0, 0, 0, 0, 0 }); //reserved 1
//The client can use acknowledgements to determine that the LIFX device has received a message.
//However, when using acknowledgements to ensure reliability in an over-burdened lossy network ...
//causing additional network packets may make the problem worse.
//Client that don't need to track the updated state of a LIFX device can choose not to request a
//response, which will reduce the network burden and may provide some performance advantage. In
//some cases, a device may choose to send a state update response independent of whether res_required is set.
if (header.AcknowledgeRequired && header.ResponseRequired)
{
dw.WriteByte(0x03);
}
else if (header.AcknowledgeRequired)
{
dw.WriteByte(0x02);
}
else if (header.ResponseRequired)
{
dw.WriteByte(0x01);
}
else
{
dw.WriteByte(0x00);
}
//The sequence number allows the client to provide a unique value, which will be included by the LIFX
//device in any message that is sent in response to a message sent by the client. This allows the client
//to distinguish between different messages sent with the same source identifier in the Frame. See
//ack_required and res_required fields in the Frame Address.
dw.WriteByte(header.Sequence);
#endregion Frame address
#region Protocol Header
//The at_time value should be zero for Set and Get messages sent by a client.
//For State messages sent by a device, the at_time will either be the device
//current time when the message was received or zero. StateColor is an example
//of a message that will return a non-zero at_time value
if (header.AtTime > DateTime.MinValue)
{
var time = header.AtTime.ToUniversalTime();
dw.WriteUInt64((UInt64)(time - new DateTime(1970, 01, 01)).TotalMilliseconds * 10); //timestamp
}
else
{
dw.WriteUInt64(0);
}
#endregion Protocol Header
dw.WriteUInt16(type); //packet _type
dw.WriteUInt16(0); //reserved
if (payload != null)
{
dw.WriteBytes(payload);
}
await dw.StoreAsync();
}
}
private async Task <T> BroadcastMessagePayloadAsync <T>(string hostName, FrameHeader header, MessageType type, byte[] payload)
where T : LifxResponse
{
uint attemptCount = 5;
T result = default(T);
do
{
if (hostName == null)
{
hostName = "255.255.255.255";
}
TaskCompletionSource <T> tcs = null;
if (//header.AcknowledgeRequired &&
header.Identifier > 0 &&
typeof(T) != typeof(UnknownResponse))
{
tcs = new TaskCompletionSource <T>();
Action <LifxResponse> action = (r) =>
{
if (!tcs.Task.IsCompleted)
{
if (r.GetType() == typeof(T))
{
tcs.SetResult((T)r);
}
}
};
taskCompletions[header.Identifier] = action;
}
using (MemoryStream stream = new MemoryStream())
{
WritePacketToStreamAsync(stream, header, (UInt16)type, payload);
var msg = stream.ToArray();
await _socket.SendAsync(msg, msg.Length, hostName, Port);
}
if (tcs != null)
{
var _ = Task.Delay(1000).ContinueWith((t) =>
{
if (!tcs.Task.IsCompleted)
{
tcs.TrySetException(new TimeoutException());
}
});
try
{
result = await tcs.Task.ConfigureAwait(false);
}
catch
{
}
finally
{
taskCompletions.Remove(header.Identifier);
}
}
attemptCount--;
} while (result == null && attemptCount > 0);
return(result);
}