added rudimentary sending of data when 'write' is called -- not buffered or timed for retransmission; added further checks and comments; now updating calculated values, since this wasn't being done before calculating the checksums, leading to incorrect checksums;
added rudimentary sending of data when 'write' is called -- not buffered or timed for retransmission;
added further checks and comments;
now updating calculated values, since this wasn't being done before calculating the checksums, leading to incorrect checksums;

niksu/pax,niksu/pax,niksu/pax