Improve handling of packet lengths.

* Use a symbol, VAR, instead of -1 for variable-length packets.
* Also change it's value to 1, so the length can be properly unsigned.
    Note: A packet can't actually have length 1, since packet ID is 2 bytes.
* Use correct type (uint16_t) for packet id and length in more places.
* Avoid reading beyond the length of the array.
* Immediately parse variable length packets with length 4 (i.e. no body)
    instead of waiting for another byte to arrive first.

Reviewed-by: Thorbjørn Lindeijer <thorbjorn@lindeijer.nl>

0 files changed, 0 insertions, 0 deletions