#329 dataSize is taken from wrong header type for received TSN messages

[Anders Öberg]

In trdp_pdReceive() pExistingElement->dataSize is assigned from the messsges header. But it don't consider if it is a TSN messges with a different messges header structure. So for TSN messages total wrong size is assigned and causing problems later.

A sugestion for this function is to use a temporery header filled once with data from the received header, parsing the differnet types. This avoids mistakes when editing this funciton later on.

[Anders Öberg]

Possible fix

        if (isTSN)
        {
            pExistingElement->dataSize = vos_ntohs(pTSNFrameHead->datasetLength);
        }
        else
        {
            pExistingElement->dataSize = vos_ntohl(pNewFrameHead->datasetLength);
        }

[Bernd Löhr]

Need to honour compile-time flags, too.