dgr2file - Online in the Cloud

PROGRAM:

NAME

dgr2file - DGR reception test program

SYNOPSIS

dgr2file

DESCRIPTION

dgr2file uses DGR to receive multiple copies of the text of a file transmitted by
file2dgr, writing each copy of the file to the current working directory. The name of
each file written by dgr2file is file_copy_cycleNbr, where cycleNbr is initially zero and
is increased by 1 every time dgr2file closes the file it is currently writing and opens a
new one.

Upon receiving a DGR datagram from file2dgr, dgr2file extracts the content of the datagram
(either a line of text from the file that is being transmitted by file2dgr or else an EOF
string indicating the end of that file). It appends each extracted line of text to the
local copy of that file that dgr2file is currently writing. When the extracted datagram
content is an EOF string (the ASCII text "*** End of the file ***"), dgr2file closes the
file it is writing, increments cycleNbr, opens a new copy of the file for writing, and
prints the message "working on cycle cycleNbr."

dgr2file always receives datagrams at port 2101.

EXIT STATUS

"0" dgr2file has terminated.

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