public void Test32BitIntZero()
{
Int32 intIn = (Int32)0x00000000;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 32);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(32);
Assert.AreEqual(intIn, intOut);
}
public void Test16BitInt()
{
Int32 intIn = (Int32)0x00004321;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 16);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(16);
Assert.AreEqual(intIn, intOut);
}
public void Test8BitInt()
{
Int32 intIn = 0x00000021;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 8);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(8);
Assert.AreEqual(intIn, intOut);
}
public void Test4BitInt()
{
Int32 intIn = 0x0000005;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 4);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(4);
Assert.AreEqual(intIn, intOut);
}
public void Test16BitInt()
{
Int32 intIn = (Int32)0x00004321;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 16);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(16);
Assert.AreEqual(intIn, intOut);
}
public void Test32BitIntZero()
{
Int32 intIn = (Int32)0x00000000;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 32);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(32);
Assert.AreEqual(intIn, intOut);
}
public void TestAlignedBytes()
{
Byte[] bytesIn = System.Text.Encoding.UTF8.GetBytes("Some aligned bytes");
DatagramWriter writer = new DatagramWriter();
writer.WriteBytes(bytesIn);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Byte[] bytesOut = reader.ReadBytesLeft();
Assert.IsTrue(bytesIn.SequenceEqual(bytesOut));
}
public void Test32BitInt()
{
unchecked
{
Int32 intIn = (Int32)0x87654321;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 32);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(32);
Assert.AreEqual(intIn, intOut);
}
}
public void Test32BitInt()
{
unchecked
{
Int32 intIn = (Int32)0x87654321;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 32);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 intOut = reader.Read(32);
Assert.AreEqual(intIn, intOut);
}
}
public void TestByteOrder()
{
Int32 intIn = 1234567890;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 32);
Byte[] data = writer.ToByteArray();
Int32 intTrans = System.Net.IPAddress.HostToNetworkOrder(BitConverter.ToInt32(data, 0));
Assert.AreEqual(intIn, intTrans);
DatagramReader reader = new DatagramReader(data);
Int32 intOut = reader.Read(32);
Assert.AreEqual(intIn, intOut);
}
public void TestBytesLeftUnaligned()
{
Int32 bitCount = 7;
Int32 bitsIn = 0x55;
Byte[] bytesIn = System.Text.Encoding.UTF8.GetBytes("Some aligned bytes");
DatagramWriter writer = new DatagramWriter();
writer.Write(bitsIn, bitCount);
writer.WriteBytes(bytesIn);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 bitsOut = reader.Read(bitCount);
Byte[] bytesOut = reader.ReadBytesLeft();
Assert.AreEqual(bitsIn, bitsOut);
Assert.IsTrue(bytesIn.SequenceEqual(bytesOut));
}
public void TestGETRequestHeader()
{
Int32 versionIn = 1;
Int32 versionSz = 2;
Int32 typeIn = 0; // Confirmable
Int32 typeSz = 2;
Int32 optionCntIn = 1;
Int32 optionCntSz = 4;
Int32 codeIn = 1; // GET Request
Int32 codeSz = 8;
Int32 msgIdIn = 0x1234;
Int32 msgIdSz = 16;
DatagramWriter writer = new DatagramWriter();
writer.Write(versionIn, versionSz);
writer.Write(typeIn, typeSz);
writer.Write(optionCntIn, optionCntSz);
writer.Write(codeIn, codeSz);
writer.Write(msgIdIn, msgIdSz);
Byte[] data = writer.ToByteArray();
Byte[] dataRef = { 0x41, 0x01, 0x12, 0x34 };
Assert.IsTrue(dataRef.SequenceEqual(data));
DatagramReader reader = new DatagramReader(data);
Int32 versionOut = reader.Read(versionSz);
Int32 typeOut = reader.Read(typeSz);
Int32 optionCntOut = reader.Read(optionCntSz);
Int32 codeOut = reader.Read(codeSz);
Int32 msgIdOut = reader.Read(msgIdSz);
Assert.AreEqual(versionIn, versionOut);
Assert.AreEqual(typeIn, typeOut);
Assert.AreEqual(optionCntIn, optionCntOut);
Assert.AreEqual(codeIn, codeOut);
Assert.AreEqual(msgIdIn, msgIdOut);
}
public void TestGETRequestHeader()
{
Int32 versionIn = 1;
Int32 versionSz = 2;
Int32 typeIn = 0; // Confirmable
Int32 typeSz = 2;
Int32 optionCntIn = 1;
Int32 optionCntSz = 4;
Int32 codeIn = 1; // GET Request
Int32 codeSz = 8;
Int32 msgIdIn = 0x1234;
Int32 msgIdSz = 16;
DatagramWriter writer = new DatagramWriter();
writer.Write(versionIn, versionSz);
writer.Write(typeIn, typeSz);
writer.Write(optionCntIn, optionCntSz);
writer.Write(codeIn, codeSz);
writer.Write(msgIdIn, msgIdSz);
Byte[] data = writer.ToByteArray();
Byte[] dataRef = { 0x41, 0x01, 0x12, 0x34 };
Assert.IsTrue(dataRef.SequenceEqual(data));
DatagramReader reader = new DatagramReader(data);
Int32 versionOut = reader.Read(versionSz);
Int32 typeOut = reader.Read(typeSz);
Int32 optionCntOut = reader.Read(optionCntSz);
Int32 codeOut = reader.Read(codeSz);
Int32 msgIdOut = reader.Read(msgIdSz);
Assert.AreEqual(versionIn, versionOut);
Assert.AreEqual(typeIn, typeOut);
Assert.AreEqual(optionCntIn, optionCntOut);
Assert.AreEqual(codeIn, codeOut);
Assert.AreEqual(msgIdIn, msgIdOut);
}
public void TestBytesLeftUnaligned()
{
Int32 bitCount = 7;
Int32 bitsIn = 0x55;
Byte[] bytesIn = System.Text.Encoding.UTF8.GetBytes("Some aligned bytes");
DatagramWriter writer = new DatagramWriter();
writer.Write(bitsIn, bitCount);
writer.WriteBytes(bytesIn);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Int32 bitsOut = reader.Read(bitCount);
Byte[] bytesOut = reader.ReadBytesLeft();
Assert.AreEqual(bitsIn, bitsOut);
Assert.IsTrue(bytesIn.SequenceEqual(bytesOut));
}
public void TestAlignedBytes()
{
Byte[] bytesIn = System.Text.Encoding.UTF8.GetBytes("Some aligned bytes");
DatagramWriter writer = new DatagramWriter();
writer.WriteBytes(bytesIn);
DatagramReader reader = new DatagramReader(writer.ToByteArray());
Byte[] bytesOut = reader.ReadBytesLeft();
Assert.IsTrue(bytesIn.SequenceEqual(bytesOut));
}
/// <summary>
/// Calculates the value used in the extended option fields as specified
/// in draft-ietf-core-coap-13, section 3.1.
/// </summary>
/// <param name="nibble">the 4-bit option header value</param>
/// <param name="datagram">the datagram</param>
/// <returns>the value calculated from the nibble and the extended option value</returns>
private static Int32 GetValueFromOptionNibble(Int32 nibble, DatagramReader datagram)
{
if (nibble < 13)
{
return nibble;
}
else if (nibble == 13)
{
return datagram.Read(8) + 13;
}
else if (nibble == 14)
{
return datagram.Read(16) + 269;
}
else
{
// TODO error
if (log.IsWarnEnabled)
log.Warn("15 is reserved for payload marker, message format error");
return 0;
}
}
/// <summary>
/// Instantiates.
/// </summary>
/// <param name="data">the bytes array to decode</param>
public MessageDecoder(Byte[] data)
{
m_reader = new DatagramReader(data);
}
public void TestByteOrder()
{
Int32 intIn = 1234567890;
DatagramWriter writer = new DatagramWriter();
writer.Write(intIn, 32);
Byte[] data = writer.ToByteArray();
Int32 intTrans = System.Net.IPAddress.HostToNetworkOrder(BitConverter.ToInt32(data, 0));
Assert.AreEqual(intIn, intTrans);
DatagramReader reader = new DatagramReader(data);
Int32 intOut = reader.Read(32);
Assert.AreEqual(intIn, intOut);
}
/// <summary>
/// Calculates the value used in the extended option fields as specified
/// in draft-ietf-core-coap-14, section 3.1.
/// </summary>
/// <param name="nibble">the 4-bit option header value</param>
/// <param name="datagram">the datagram</param>
/// <returns>the value calculated from the nibble and the extended option value</returns>
private static Int32 GetValueFromOptionNibble(Int32 nibble, DatagramReader datagram)
{
if (nibble < 13)
return nibble;
else if (nibble == 13)
return datagram.Read(8) + 13;
else if (nibble == 14)
return datagram.Read(16) + 269;
else
throw ThrowHelper.Argument("nibble", "Unsupported option delta " + nibble);
}
/// <summary>
/// Instantiates.
/// </summary>
/// <param name="data">the bytes array to decode</param>
public MessageDecoder(Byte[] data)
{
_reader = new DatagramReader(data);
}
