protected NwkCLMSPayload(NwkProtocolDiscriminator pd, byte ti, bool f) : base(pd, ti, f)
{
}
protected NwkSFormatPayload(NwkProtocolDiscriminator pd, byte ti, bool f, ReadOnlyMemory <byte> data) : base(pd, ti, f)
{
var span = data.Span;
InformationElements = new List <NwkInformationElement>();
int i = 0;
for (; i < span.Length; i++)
{
var current = span[i];
if ((current & 0x80) != 0)
{
//fixed length
if ((current & 0xf0) == 0xe0)
{
//double byte
var identifier = (byte)(current & 0xf);
var content = span[i + 1];
var ie = NwkDoubleByteInformationElement.Create(identifier, content);
if (ie.HasUnknown)
{
HasUnknown = true;
}
InformationElements.Add(ie);
i++;
}
else
{
//single byte
var identifier = (byte)((current >> 4) & 0x7);
var content = (byte)(current & 0xf);
var ie = NwkSingleByteInformationElement.Create(identifier, content);
if (ie.HasUnknown)
{
HasUnknown = true;
}
InformationElements.Add(ie);
}
}
else
{
var type = (NwkVariableLengthElementType)current;
var length = span[i + 1];
if (length > 0) //EN ETSI 300 175-5 #7.5.1
{
var ie = NwkVariableLengthInformationElement.Create(type, data.Slice(i + 2, length));
if (ie.HasUnknown)
{
HasUnknown = true;
}
InformationElements.Add(ie);
}
else
{
InformationElements.Add(new NwkIeEmpty());
}
i += length + 1;
}
}
if (i < span.Length)
{
HasUnknown = true;
}
}
protected NwkPayload(NwkProtocolDiscriminator pd, byte ti, bool f)
{
ProtocolDiscriminator = pd;
TransactionIdentifier = ti;
TransactionFlag = f;
}