sdr

A common protocol structure is to have a header containing a length field, followed by data of length bytes, followed by additional protocol fields such as a CRC. If the length field is variable, the position of subsequent URH-specified protocol fields defined by fixed position will not be in the correct location.

I do not know the best way to address this, but quick and easy way to support

gr-digital has example flow graphs in sub-directories that aren't being tested by test_examples.py
They are:

gr-digital/examples/packet
gr-digital/examples/ofdm
gr-digital/examples/demod
gr-digital/examples/equalizers

@haakov