'Add a buffer header and payload that we read from the socket.
This differs from add_buffer() because we\'re validating vs.
the header\'s num_buffers, instead of filling in the header.
Args:
buf_header (JSON) : a buffer header
buf_payload (JSON or bytes) : a buffer payload
Returns:
None
Raises:
ProtocolError'

def assemble_buffer(self, buf_header, buf_payload):

    if (self.header['num_buffers'] <= len(self._buffers)):
        raise ProtocolError(('too    many    buffers    received    expecting    ' + str(self.header['num_buffers'])))
    self._buffers.append((buf_header, buf_payload))
