private void ParseAttribute(byte[] data, ref int offset)
{
// Type
AttributeType type = (AttributeType)(data[offset++] << 8 | data[offset++]);
// Length
int length = (data[offset++] << 8 | data[offset++]);
// MAPPED-ADDRESS
if (type == AttributeType.MappedAddress)
{
MappedAddress = ParseEndPoint(data, ref offset);
}
// RESPONSE-ADDRESS
else if (type == AttributeType.ResponseAddress)
{
ResponseAddress = ParseEndPoint(data, ref offset);
}
// CHANGE-REQUEST
else if (type == AttributeType.ChangeRequest)
{
offset += 3;
ChangeRequest = new ChangeRequest((data[offset] & 4) != 0, (data[offset] & 2) != 0);
offset++;
}
// SOURCE-ADDRESS
else if (type == AttributeType.SourceAddress)
{
SourceAddress = ParseEndPoint(data, ref offset);
}
// CHANGED-ADDRESS
else if (type == AttributeType.ChangedAddress)
{
ChangedAddress = ParseEndPoint(data, ref offset);
}
// USERNAME
else if (type == AttributeType.Username)
{
UserName = Encoding.Default.GetString(data, offset, length);
offset += length;
}
// PASSWORD
else if (type == AttributeType.Password)
{
Password = Encoding.Default.GetString(data, offset, length);
offset += length;
}
// MESSAGE-INTEGRITY
else if (type == AttributeType.MessageIntegrity)
{
offset += length;
}
else if (type == AttributeType.ErrorCode)
{
int errorCode = (data[offset + 2] & 0x7) * 100 + (data[offset + 3] & 0xFF);
ErrorCode = new ErrorCode(errorCode, Encoding.Default.GetString(data, offset + 4, length - 4));
offset += length;
}
else if (type == AttributeType.UnknownAttribute)
{
offset += length;
}
else if (type == AttributeType.ReflectedFrom)
{
ReflectedFrom = ParseEndPoint(data, ref offset);
}
// XorMappedAddress
// XorOnly
// ServerName
else if (type == AttributeType.ServerName)
{
ServerName = Encoding.Default.GetString(data, offset, length);
offset += length;
}
// Unknown
else
{
offset += length;
}
}
private void ParseAttribute(byte[] data, ref int offset)
{
// Type
AttributeType type = (AttributeType)(data[offset++] << 8 | data[offset++]);
// Length
int length = (data[offset++] << 8 | data[offset++]);
// MAPPED-ADDRESS
if (type == AttributeType.MappedAddress)
{
MappedAddress = ParseEndPoint(data, ref offset);
}
// RESPONSE-ADDRESS
else if (type == AttributeType.ResponseAddress)
{
ResponseAddress = ParseEndPoint(data, ref offset);
}
// CHANGE-REQUEST
else if (type == AttributeType.ChangeRequest)
{
offset += 3;
ChangeRequest = new ChangeRequest((data[offset] & 4) != 0, (data[offset] & 2) != 0);
offset++;
}
// SOURCE-ADDRESS
else if (type == AttributeType.SourceAddress)
{
SourceAddress = ParseEndPoint(data, ref offset);
}
// CHANGED-ADDRESS
else if (type == AttributeType.ChangedAddress)
{
ChangedAddress = ParseEndPoint(data, ref offset);
}
// USERNAME
else if (type == AttributeType.Username)
{
UserName = Encoding.Default.GetString(data, offset, length);
offset += length;
}
// PASSWORD
else if (type == AttributeType.Password)
{
Password = Encoding.Default.GetString(data, offset, length);
offset += length;
}
// MESSAGE-INTEGRITY
else if (type == AttributeType.MessageIntegrity)
{
offset += length;
}
else if (type == AttributeType.ErrorCode)
{
int errorCode = (data[offset + 2] & 0x7) * 100 + (data[offset + 3] & 0xFF);
ErrorCode = new ErrorCode(errorCode, Encoding.Default.GetString(data, offset + 4, length - 4));
offset += length;
}
else if (type == AttributeType.UnknownAttribute)
{
offset += length;
}
else if (type == AttributeType.ReflectedFrom)
{
ReflectedFrom = ParseEndPoint(data, ref offset);
}
// XorMappedAddress
// XorOnly
// ServerName
else if (type == AttributeType.ServerName)
{
ServerName = Encoding.Default.GetString(data, offset, length);
offset += length;
}
// Unknown
else
{
offset += length;
}
}