public byte[] CalcDtMAC(MaslDtFrame frame, uint destAddress)
{
var totalLen = frame.UserDataLen + 6;
using (var memStream = new MemoryStream(totalLen))
{
// L
var len = (ushort)(totalLen - 2);
memStream.WriteByte((byte)((len >> 16) & 0xFF));
memStream.WriteByte((byte)(len & 0xFF));
// DA
memStream.WriteByte((byte)((destAddress >> 16) & 0xFF));
memStream.WriteByte((byte)((destAddress >> 8) & 0xFF));
memStream.WriteByte((byte)((destAddress) & 0xFF));
// ETY+MTI+DF
memStream.WriteByte(frame.GetHeaderByte());
// UserData
memStream.Write(frame.UserData, 0, frame.UserDataLen);
//
var mac = _macCalc.CalcMac(memStream.ToArray());
return(mac);
}
}
public byte[] BuildDtPacket(byte[] userData)
{
var direction = _rsspEndPoint.IsInitiator ? MaslFrameDirection.Client2Server : MaslFrameDirection.Server2Client;
var frame = new MaslDtFrame(direction, userData);
frame.MAC = this.CalcDtMAC(frame, _rsspEndPoint.RemoteID);
return(frame.GetBytes());
}
public void Test1()
{
var data = new byte[] { 0x11, 0xF1, 0x1C };
var mac = new byte[] { 0x4f, 0x2c, 0xe, 0xa1, 0x3f, 0x3e, 0xb4, 0x4a };
var frame1 = new MaslDtFrame(MaslFrameDirection.Client2Server, data);
frame1.MAC = mac;
var bytes = frame1.GetBytes();
var frame2 = new MaslDtFrame();
frame2.ParseBytes(bytes, 0, bytes.Length - 1);
Assert.AreEqual(frame1.DeviceType, frame2.DeviceType);
Assert.AreEqual(frame1.Direction, frame2.Direction);
Assert.AreEqual(frame1.FrameType, frame2.FrameType);
CollectionAssert.AreEqual(frame1.UserData, frame2.UserData);
CollectionAssert.AreEqual(frame1.MAC, frame2.MAC);
}
public virtual void HandleDtFrame(MaslDtFrame frame)
{
LogUtility.Error(string.Format("{0}: {1}.{2} not implement!",
this.Context.RsspEP.ID, this.GetType().Name,
new StackFrame(0).GetMethod().Name.Split('.').Last()));
}