public void GetIpV4BytesTest()
{
AddressAttribute target = new MappedAddress()
{
IpAddress = IPAddress.Loopback,
Port = 0x1234,
};
byte[] expected = new byte[]
{
0xee, 0xee, 0xee, 0xee,
0x00, 0x01, 0x00, 0x08,
0x00, 0x01, 0x12, 0x34,
0x7f, 0x00, 0x00, 0x01,
};
byte[] actual = new byte[]
{
0xee, 0xee, 0xee, 0xee,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
int startIndex = 4;
target.GetBytes(actual, ref startIndex);
Assert.AreEqual(16, startIndex);
Helpers.AreArrayEqual(expected, actual);
Assert.AreEqual(AddressFamily.InterNetwork, target.IpEndPoint.AddressFamily);
}
public void GetIpV6BytesTest()
{
AddressAttribute target = new MappedAddress()
{
IpAddress = IPAddress.Parse("0102:0304:0506:0708:090a:0b0c:0d0e:0f10"),
Port = 0x1234,
};
byte[] expected = new byte[]
{
0xee, 0xee, 0xee, 0xee,
0x00, 0x01, 0x00, 20,
0x00, 0x02, 0x12, 0x34,
0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c,
0x0d, 0x0e, 0x0f, 0x10,
};
byte[] actual = new byte[]
{
0xee, 0xee, 0xee, 0xee,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
int startIndex = 4;
target.GetBytes(actual, ref startIndex);
Assert.AreEqual(28, startIndex);
Helpers.AreArrayEqual(expected, actual);
Assert.AreEqual(AddressFamily.InterNetworkV6, target.IpEndPoint.AddressFamily);
}
private void ParseAttributes(byte[] bytes, int startIndex, int length, TurnMessageRfc rfc)
{
int currentIndex = startIndex + HeaderLength;
int endIndex = startIndex + length;
while (currentIndex < endIndex)
{
UInt16 attributeType1 = bytes.BigendianToUInt16(currentIndex);
if (Enum.IsDefined(typeof(AttributeType), (Int32)attributeType1) == false)
{
throw new TurnMessageException(ErrorCode.UnknownAttribute);
}
AttributeType attributeType = (AttributeType)attributeType1;
if (rfc == TurnMessageRfc.Rfc3489)
{
if (IsRfc3489(attributeType))
{
throw new TurnMessageException(ErrorCode.UnknownAttribute);
}
}
if (attributeType == AttributeType.Fingerprint)
{
if (Fingerprint == null)
{
if (storedBytes == null)
{
storedBytes = new byte[length];
Array.Copy(bytes, startIndex, storedBytes, 0, length);
}
fingerprintStartOffset = currentIndex - startIndex;
Fingerprint = new Fingerprint();
Fingerprint.Parse(bytes, ref currentIndex);
}
else
{
Attribute.Skip(bytes, ref currentIndex);
}
}
else if (MessageIntegrity != null)
{
Attribute.Skip(bytes, ref currentIndex);
}
else
{
switch (attributeType)
{
case AttributeType.AlternateServer:
AlternateServer = new AlternateServer();
AlternateServer.Parse(bytes, ref currentIndex);
break;
case AttributeType.Bandwidth:
Bandwidth = new Bandwidth();
Bandwidth.Parse(bytes, ref currentIndex);
break;
case AttributeType.Data:
Data = new Data();
Data.Parse(bytes, ref currentIndex);
break;
case AttributeType.DestinationAddress:
DestinationAddress = new DestinationAddress();
DestinationAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.ErrorCode:
ErrorCodeAttribute = new ErrorCodeAttribute();
ErrorCodeAttribute.Parse(bytes, ref currentIndex);
break;
case AttributeType.Fingerprint:
break;
case AttributeType.Lifetime:
Lifetime = new Lifetime();
Lifetime.Parse(bytes, ref currentIndex);
break;
case AttributeType.MagicCookie:
MagicCookie = new MagicCookie();
MagicCookie.Parse(bytes, ref currentIndex);
break;
case AttributeType.MappedAddress:
MappedAddress = new MappedAddress();
MappedAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.MessageIntegrity:
messageIntegrityStartOffset = currentIndex - startIndex;
if (storedBytes == null)
{
if (rfc == TurnMessageRfc.MsTurn)
{
storedBytes = new byte[GetPadded64(messageIntegrityStartOffset)];
Array.Copy(bytes, startIndex, storedBytes, 0, messageIntegrityStartOffset);
}
else
{
storedBytes = new byte[length];
Array.Copy(bytes, startIndex, storedBytes, 0, length);
}
}
MessageIntegrity = new MessageIntegrity();
MessageIntegrity.Parse(bytes, ref currentIndex);
break;
case AttributeType.MsVersion:
MsVersion = new MsVersion();
MsVersion.Parse(bytes, ref currentIndex);
break;
case AttributeType.MsSequenceNumber:
MsSequenceNumber = new MsSequenceNumber();
MsSequenceNumber.Parse(bytes, ref currentIndex);
break;
case AttributeType.RemoteAddress:
RemoteAddress = new RemoteAddress();
RemoteAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.Software:
Software = new Software();
Software.Parse(bytes, ref currentIndex);
break;
case AttributeType.UnknownAttributes:
UnknownAttributes = new UnknownAttributes();
// Not Implemented
UnknownAttributes.Parse(bytes, ref currentIndex);
break;
case AttributeType.Username:
if (MsVersion != null)
{
MsUsername = new MsUsername();
MsUsername.Parse(bytes, ref currentIndex);
}
else
{
Username = new Username();
Username.Parse(bytes, ref currentIndex);
}
break;
// ietf-mmusic-ice
case AttributeType.Priority:
case AttributeType.UseCandidate:
case AttributeType.IceControlled:
case AttributeType.IceControlling:
Attribute.Skip(bytes, ref currentIndex);
break;
// rfc3489
case AttributeType.ChangedAddress:
ChangedAddress = new ChangedAddress();
ChangedAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.ChangeRequest:
ChangeRequest = new ChangeRequest();
ChangeRequest.Parse(bytes, ref currentIndex);
break;
case AttributeType.ResponseAddress:
ResponseAddress = new ResponseAddress();
ResponseAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.SourceAddress:
SourceAddress = new SourceAddress();
SourceAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.ReflectedFrom:
ReflectedFrom = new ReflectedFrom();
ReflectedFrom.Parse(bytes, ref currentIndex);
break;
case AttributeType.Password:
Password = new Password();
Password.Parse(bytes, ref currentIndex);
break;
default:
if (rfc == TurnMessageRfc.MsTurn)
{
switch (attributeType)
{
case AttributeType.Nonce:
Nonce = new Nonce(rfc);
Nonce.Parse(bytes, ref currentIndex);
break;
case AttributeType.Realm:
Realm = new Realm(rfc);
Realm.Parse(bytes, ref currentIndex);
break;
case AttributeType.XorMappedAddress:
XorMappedAddress = new XorMappedAddress(rfc);
XorMappedAddress.Parse(bytes, ref currentIndex, TransactionId);
break;
default:
throw new NotImplementedException();
}
}
else
{
switch (attributeType)
{
case AttributeType.NonceStun:
Nonce = new Nonce(rfc);
Nonce.Parse(bytes, ref currentIndex);
break;
case AttributeType.RealmStun:
Realm = new Realm(rfc);
Realm.Parse(bytes, ref currentIndex);
break;
case AttributeType.XorMappedAddressStun:
XorMappedAddress = new XorMappedAddress(rfc);
XorMappedAddress.Parse(bytes, ref currentIndex, TransactionId);
break;
default:
throw new NotImplementedException();
}
}
break;
}
}
if (rfc != TurnMessageRfc.MsTurn)
{
if (currentIndex % 4 > 0)
{
currentIndex += 4 - currentIndex % 4;
}
}
}
}
public void ParseIp6Test()
{
byte[] bytes = new byte[]
{
0x00, 0x01, 0x00, 20,
0x00, 0x02, 0x12, 0x34,
0x11, 0x22, 0x33, 0x44,
0x55, 0x66, 0x77, 0x88,
0x99, 0xaa, 0xbb, 0xcc,
0xdd, 0xee, 0xff, 0xf2,
};
int startIndex = 0;
AddressAttribute target = new MappedAddress();
target.Parse(bytes, ref startIndex);
Assert.AreEqual(24, startIndex);
Assert.AreEqual(AttributeType.MappedAddress, target.AttributeType);
Assert.AreEqual(0x1234, target.Port);
Assert.AreEqual(@"1122:3344:5566:7788:99aa:bbcc:ddee:fff2", target.IpAddress.ToString());
}
public void ParseIp4Test()
{
byte[] bytes = new byte[]
{
0x00, 0x01, 0x00, 0x08,
0xff, 0x01, 0x12, 0x34,
0x01, 0x02, 0x03, 0x04,
};
int startIndex = 0;
AddressAttribute target = new MappedAddress();
target.Parse(bytes, ref startIndex);
Assert.AreEqual(12, startIndex);
Assert.AreEqual(AttributeType.MappedAddress, target.AttributeType);
Assert.AreEqual(0x1234, target.Port);
Assert.AreEqual(@"1.2.3.4", target.IpAddress.ToString());
}
private void ParseAttributes(byte[] bytes, int startIndex, int length, TurnMessageRfc rfc)
{
int currentIndex = startIndex + HeaderLength;
int endIndex = startIndex + length;
while (currentIndex < endIndex)
{
UInt16 attributeType1 = bytes.BigendianToUInt16(currentIndex);
if (Enum.IsDefined(typeof(AttributeType), (Int32)attributeType1) == false)
throw new TurnMessageException(ErrorCode.UnknownAttribute);
AttributeType attributeType = (AttributeType)attributeType1;
if (rfc == TurnMessageRfc.Rfc3489)
if (IsRfc3489(attributeType))
throw new TurnMessageException(ErrorCode.UnknownAttribute);
if (attributeType == AttributeType.Fingerprint)
{
if (Fingerprint == null)
{
if (storedBytes == null)
{
storedBytes = new byte[length];
Array.Copy(bytes, startIndex, storedBytes, 0, length);
}
fingerprintStartOffset = currentIndex - startIndex;
Fingerprint = new Fingerprint();
Fingerprint.Parse(bytes, ref currentIndex);
}
else
{
Attribute.Skip(bytes, ref currentIndex);
}
}
else if (MessageIntegrity != null)
{
Attribute.Skip(bytes, ref currentIndex);
}
else
{
switch (attributeType)
{
case AttributeType.AlternateServer:
AlternateServer = new AlternateServer();
AlternateServer.Parse(bytes, ref currentIndex);
break;
case AttributeType.Bandwidth:
Bandwidth = new Bandwidth();
Bandwidth.Parse(bytes, ref currentIndex);
break;
case AttributeType.Data:
Data = new Data();
Data.Parse(bytes, ref currentIndex);
break;
case AttributeType.DestinationAddress:
DestinationAddress = new DestinationAddress();
DestinationAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.ErrorCode:
ErrorCodeAttribute = new ErrorCodeAttribute();
ErrorCodeAttribute.Parse(bytes, ref currentIndex);
break;
case AttributeType.Fingerprint:
break;
case AttributeType.Lifetime:
Lifetime = new Lifetime();
Lifetime.Parse(bytes, ref currentIndex);
break;
case AttributeType.MagicCookie:
MagicCookie = new MagicCookie();
MagicCookie.Parse(bytes, ref currentIndex);
break;
case AttributeType.MappedAddress:
MappedAddress = new MappedAddress();
MappedAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.MessageIntegrity:
messageIntegrityStartOffset = currentIndex - startIndex;
if (storedBytes == null)
{
if (rfc == TurnMessageRfc.MsTurn)
{
storedBytes = new byte[GetPadded64(messageIntegrityStartOffset)];
Array.Copy(bytes, startIndex, storedBytes, 0, messageIntegrityStartOffset);
}
else
{
storedBytes = new byte[length];
Array.Copy(bytes, startIndex, storedBytes, 0, length);
}
}
MessageIntegrity = new MessageIntegrity();
MessageIntegrity.Parse(bytes, ref currentIndex);
break;
case AttributeType.MsVersion:
MsVersion = new MsVersion();
MsVersion.Parse(bytes, ref currentIndex);
break;
case AttributeType.MsSequenceNumber:
MsSequenceNumber = new MsSequenceNumber();
MsSequenceNumber.Parse(bytes, ref currentIndex);
break;
case AttributeType.RemoteAddress:
RemoteAddress = new RemoteAddress();
RemoteAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.Software:
Software = new Software();
Software.Parse(bytes, ref currentIndex);
break;
case AttributeType.UnknownAttributes:
UnknownAttributes = new UnknownAttributes();
// Not Implemented
UnknownAttributes.Parse(bytes, ref currentIndex);
break;
case AttributeType.Username:
if (MsVersion != null)
{
MsUsername = new MsUsername();
MsUsername.Parse(bytes, ref currentIndex);
}
else
{
Username = new Username();
Username.Parse(bytes, ref currentIndex);
}
break;
// ietf-mmusic-ice
case AttributeType.Priority:
case AttributeType.UseCandidate:
case AttributeType.IceControlled:
case AttributeType.IceControlling:
Attribute.Skip(bytes, ref currentIndex);
break;
// rfc3489
case AttributeType.ChangedAddress:
ChangedAddress = new ChangedAddress();
ChangedAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.ChangeRequest:
ChangeRequest = new ChangeRequest();
ChangeRequest.Parse(bytes, ref currentIndex);
break;
case AttributeType.ResponseAddress:
ResponseAddress = new ResponseAddress();
ResponseAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.SourceAddress:
SourceAddress = new SourceAddress();
SourceAddress.Parse(bytes, ref currentIndex);
break;
case AttributeType.ReflectedFrom:
ReflectedFrom = new ReflectedFrom();
ReflectedFrom.Parse(bytes, ref currentIndex);
break;
case AttributeType.Password:
Password = new Password();
Password.Parse(bytes, ref currentIndex);
break;
default:
if (rfc == TurnMessageRfc.MsTurn)
{
switch (attributeType)
{
case AttributeType.Nonce:
Nonce = new Nonce(rfc);
Nonce.Parse(bytes, ref currentIndex);
break;
case AttributeType.Realm:
Realm = new Realm(rfc);
Realm.Parse(bytes, ref currentIndex);
break;
case AttributeType.XorMappedAddress:
XorMappedAddress = new XorMappedAddress(rfc);
XorMappedAddress.Parse(bytes, ref currentIndex, TransactionId);
break;
default:
throw new NotImplementedException();
}
}
else
{
switch (attributeType)
{
case AttributeType.NonceStun:
Nonce = new Nonce(rfc);
Nonce.Parse(bytes, ref currentIndex);
break;
case AttributeType.RealmStun:
Realm = new Realm(rfc);
Realm.Parse(bytes, ref currentIndex);
break;
case AttributeType.XorMappedAddressStun:
XorMappedAddress = new XorMappedAddress(rfc);
XorMappedAddress.Parse(bytes, ref currentIndex, TransactionId);
break;
default:
throw new NotImplementedException();
}
}
break;
}
}
if (rfc != TurnMessageRfc.MsTurn)
{
if (currentIndex % 4 > 0)
currentIndex += 4 - currentIndex % 4;
}
}
}