provides the SLIP data framing protocol described by RFC1055.
The module is an implementation of the general data-processing module type
for details of that general interface.
must be called before any other operation of the module.
begins SLIP line encoding or decoding via the channel it returns,
following the protocol of
is one of the two following strings:
- The filter takes the block of data obtained by each
message, adds framing and escape characters as required,
and returns the resulting data block in an
- The filter operates on the data in
messages as a single stream of bytes, providing an
message for each framed message found in the stream,
with escape characters processed to retrieve the original data.