Determine how user defined structure can be passed to the UI

[Scottapotamas]

Determine how user defined structure can be passed to the UI

[Scottapotamas]

The implementation handles this reasonably well by sending the byte stream and length of the object as part of the payload.

This just means we read out bytes from the start of the structure (ie, the value of the pointer) and keep going blindly until we've hit the sizeof(structure).

In the same manner, we assume the UI is sending us correctly formed structure data and blindly copy in the correct number of bytes.

This works for all the default types, and will scale to any other structure/array as needed, assuming it is not larger than the maximum payload length/message size.