public bool TryParse(byte[] bytes)
{
if (bytes.Length < 20)
{
return(false); // Check length
}
StunMessageType = (StunMessageType)BitUtils.FromBe((byte)(bytes[0] & 0b0011_1111), bytes[1]);
if (!Enum.IsDefined(typeof(StunMessageType), StunMessageType))
{
return(false);
}
var length = BitUtils.FromBe(bytes[2], bytes[3]);
MagicCookie = BitUtils.FromBeToInt(bytes.Skip(4).Take(4));
TransactionId = bytes.Skip(8).Take(12).ToArray();
if (bytes.Length != length + 20)
{
return(false); // Check length
}
var list = new List <Attribute>();
var b = bytes.Skip(20).ToArray();
while (b.Length > 0)
{
var attribute = new Attribute(MagicCookieBytes.ToArray(), TransactionId);
var offset = attribute.TryParse(b);
if (offset > 0)
{
list.Add(attribute);
b = b.Skip(offset).ToArray();
}
else
{
Debug.WriteLine($@"[Warning] Ignore wrong attribute: {BitConverter.ToString(b)}");
break;
}
}
Attributes = list;
return(true);
}
