Hi All

i ask myself why there are no modern transfer protocols out there.
The X/Y/Z-Modem stuff was made long before TCP and IP where used by the
masses. But today there is no need for these old protocols. Modern terminal-programs work over tcp/ip and in most cases the filetransfer goes wrong. I tryed to integrate a version of zmodem, writen in java, an it's a mess. There is so many error correction stuff in the protocol that i decided
to create a new protocol for my bbs ;-)

TCP/IP has all the beautiful corrections and sorting mechanisms that the filetransfer needed. In my case the protocol is written in to linux-shell-scripts. It doesn't ask for filenames, handles batch-downloads and is very simple.

For the Download, the Communication comes only from the BBS:
BBS -> CLIENT: $02 (Start of Text)
BBS -> CLIENT: FILENAME + $0D
BBS -> CLIENT: FILELENGTH + $0D
BBS -> CLIENT: DATA (Base64 without Linebreaks) + $0D
BBS -> CLIENT: $04 (End of Transmission)

The TCP/IP-Connection handles all Errors ;-)

For the Upload:
BBS -> CLIENT: $05 (Enquiry)
BBS <- CLIENT: FILENAME + $0D
BBS <- CLIENT: DATA (Base64 without Linebreaks) + $0D
BBS -> CLIENT: $04 (End of Transmission)

The Up- and Download-Scripts are very easy an i can post them here if needed.

With this simple (but surely not the best solution) i can up- and download files to my bbs without any error.

i'm very happy about this :-)

Best Regards,
Dragonmaster

--- Mystic BBS v1.12 A43 2019/03/03 (Raspberry Pi/32)
* Origin: XIONUM-BBS (21:1/149)

With this simple (but surely not the best solution) i can up- and
download files to my bbs without any error.

i'm very happy about this :-)

Very cool! I had wondered about this too. Would love to check out your
scripts. It would be cool if a standard like this could be created and added along side X/Y/Z modem for modern BBS use :)

--- Mystic BBS v1.12 A43 2019/03/02 (Linux/64)
* Origin: Stellar Darkness BBS, Toronto, Canada (21:4/162)

Hi.

Here are the Scripts, the names are "upload" and "download", i was very creative ;-)

For the Download:
------------------
#!/bin/sh
# this script is for downloading files from the bbs
# in mystic set the "Send Command" to ./download %7
# %7 is the nodenumber

NODE=$1
if [ -f temp$NODE/file.lst ]
then
for FILE in $(cat temp$NODE/file.lst)
do
FILENA=$(basename $FILE)
DATA=$(base64 -w 0 "$FILE")
LENGTH=$(echo $DATA | wc -m)

echo '$02' <- here you have to send the real byte
echo $FILENA
echo $LENGTH
echo $DATA
echo '$04' <- here you have to send the real byte
echo "z 0 19200 bps 9600 cps 0 errors 0 1024 $FILENA -1" >> $DSZLOG
done
else
DATA=$(base64 -w 0 "$1")
LENGTH=$(echo $DATA | wc -m)
FILENA=$(basename $FILENAME)

echo '$02' <- here you have to send the real byte
echo $FILENA
echo $LENGTH
echo $DATA
echo '$04' <- here you have to send the real byte
echo "z 0 19200 bps 9600 cps 0 errors 0 1024 $FILENA -1" >> $DSZLOG
fi

For the Upload:
----------------
#!/bin/sh
# this script is for uploading a file to the bbs
# in mystic set the "Recv Command" to /absolute/path/of/upload
# example: /home/bbs/mystic/upload

echo '$05' <- here you have to send the real byte
stty -echo
read FILENAME
base64 -d -i > $FILENAME
stty echo
echo '$04' <- here you have to send the real byte
sync
SIZE=$(wc -c <"$FILENAME")
if [ $SIZE -eq 0 ]
then
echo "ERROR"
else
echo "Z $SIZE 19200 bps 9600 cps 0 errors 0 1024 $FILENAME -1" >> $DSZLOG fi ----------------------------------------------------------------------------- To echo the real bytes edit the script with the mcedit.
Press F9 -> select "format" -> select "insert literal" and press the key for the byte. A=$01, B=$02, C=$03, D=$04 and so on...

If you have an open-source-terminal you can put the counterpart to the script in it.

To test the up- and download you can use my bbs
Telnet: server.xionum.de:2323
SSH: server.xionum.de:2222

Best Regards,
Dragonmaster

--- Mystic BBS v1.12 A43 2019/03/03 (Raspberry Pi/32)
* Origin: XIONUM-BBS (21:1/149)

Here are the Scripts, the names are "upload" and "download", i was very creative ;-)

Very cool! Thanks for sharing :)

--- Mystic BBS v1.12 A43 2019/03/02 (Linux/64)
* Origin: Stellar Darkness BBS, Toronto, Canada (21:4/162)