public void ParseIp4Test()
{
byte[] bytes = new byte[]
{
0x00, 0x01, 0x00, 0x08,
0xff, 0x01, 0x34, 0xa1,
0xe1, 0xba, 0xa5, 0x43,
};
int startIndex = 0;
XorMappedAddress target = new XorMappedAddress(TurnMessageRfc.Rfc3489);
target.Parse(bytes, ref startIndex, GetTransactionId());
Assert.AreEqual(12, startIndex);
Assert.AreEqual(AttributeType.XorMappedAddressStun, target.AttributeType);
Assert.AreEqual(0x15b3, target.Port);
Assert.AreEqual(@"192.168.1.1", target.IpAddress.ToString());
}
internal static IEnumerable <Attribute> ParseAttributes(
IEnumerable <byte> bytes,
byte[] transactionId = null
)
{
while (bytes.Any())
{
var type = (Attribute.AttributeType)bytes.Take(2).ToUShort();
ushort length = bytes.Skip(2).Take(2).ToUShort();
byte[] payload = bytes.Skip(4).Take(length).ToArray();
switch (type)
{
case Attribute.AttributeType.ErrorCode:
yield return(ErrorCode.Parse(payload));
break;
case Attribute.AttributeType.Realm:
yield return(Realm.Parse(payload));
break;
case Attribute.AttributeType.Nonce:
yield return(Stun.Attributes.Nonce.Parse(payload));
break;
case Attribute.AttributeType.Software:
yield return(Software.Parse(payload));
break;
case Attribute.AttributeType.Fingerprint:
yield return(Fingerprint.Parse(payload));
break;
case Attribute.AttributeType.XorMappedAddress:
yield return(XorMappedAddress.Parse(
payload, transactionId));
break;
case Attribute.AttributeType.XorRelayedAddress:
yield return(XorRelayedAddress.Parse(
payload, transactionId));
break;
case Attribute.AttributeType.ConnectionId:
yield return(new ConnectionId(payload));
break;
case Attribute.AttributeType.Lifetime:
yield return(new Lifetime((int)payload.ToUInt()));
break;
}
// Detect padding
var padBytes = (ushort)((4 + length) % 4);
if (padBytes > 0)
{
length += padBytes;
}
bytes = bytes.Skip(4 + length);
}
}