/// <summary>
/// Writes the Frame Address portion of the message header to the buffer.
/// See http://lan.developer.lifx.com/docs/header-description for more details.
/// </summary>
/// <param name="buffer">The buffer to write to.</param>
private void WriteFrameAddress(MemoryStream buffer)
{
Debug.Assert(buffer != null);
// The first 8 bytes contain the 6-byte Target MAC Address, right padded with 2 zeros.
//
byte[] targetAddress = Target.Bytes;
Debug.Assert(targetAddress.Length == 6);
buffer.Write(targetAddress, 0, 6);
buffer.WriteZeros(2);
// The next 6 bytes are unusued and marked "Reserved".
//
buffer.WriteZeros(6);
// The next byte contains bitflags about the message where byte:
// [0]: res_required
// [1]: ack_required
//
byte flags = 0;
if (ResponseRequired)
{
flags |= (1 << 0);
}
if (AckRequired)
{
flags |= (1 << 1);
}
buffer.LittleEndianWriteByte(flags);
// The last byte is the Message's sequence number.
//
buffer.LittleEndianWriteByte(SequenceNumber);
}
/// <summary>
/// Writes the Protocol Header portion of the message header to the buffer.
/// See http://lan.developer.lifx.com/docs/header-description for more details.
/// </summary>
/// <param name="buffer">The buffer to write to.</param>
private void WriteProtocolHeader(MemoryStream buffer)
{
Debug.Assert(buffer != null);
// The first 8 bytes are unusued and marked "Reserved".
//
buffer.WriteZeros(8);
// The next 2 bytes are the MessageType.
//
buffer.LitteEndianWriteUInt16((UInt16)MessageType);
// The last 2 bytes are also unusued and marked "Reserved".
//
buffer.WriteZeros(2);
}