Prior to this change, the recv call was using the same buflen as that of
the send, which meant that the response would be truncated at by the
client, while the server was sending the entire message. This was
evident by running a Python client which manually called recv with the
maximum buffer size.
This change updates the prototype to take both a bufin (length of the
input buffer), and a bufout (length of the output buffer) argument,
instead of a single buflen. With this change, commands work as expected
in x52ctl.
This change makes the protocol more strict, in that the buffer sent to
the daemon must be a series of NUL separated arguments. This makes it a
little easier to handle the strings, especially those that may have
embedded whitespace.
nirenjan