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HSDLP.DOC
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1993-07-18
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DLP HS/Link
Copyright 1993 Samuel H. Smith
All Rights Reserved
A version of the HS/Link File Transfer Protocol
for use with
ProComm Plus for Windows
(PRELIMINARY APPLICATION NOTES)
HSLINK.DLP is a special version of the HS/Link program which has been written
specifically for use by ProComm Plus for Windows (PROWIN).
INSTALLATION
Simply place the HSLINK.DLP in your PROWIN directory, and the HSLINK protocol
will automatically appear in the protocol menus and will work as other
protocols do in this environment.
If you wish to include HS/Link in your "host mode" operations, copy the
supplied HOST.WAS file to your PROWIN\ASPECT directory.
OPERATION
Once HSLINK.DLP is installed in your PROWIN directory, the HS/Link protocol
will automatically appear in PROWIN's protocol menus.
Downloads are automatic and require no special attention.
To upload, click the "upload" icon and select files to transmit.
To perform a bidirectional transfer, note that you MUST NOT press the final
<ENTER> key required by the BBS you are calling. Instead, click the "upload"
icon and flag outgoing files. When HSLINK starts on your end, it will send
the final <ENTER> key sequence to the BBS.
CONFIGURATION
If you wish to set HS/Link options, you can modify the HSLINK.INI file in
your PROWIN directory. These settings are normally manipulated via the
"Advanced!" setup option of HS/Link from within PROWIN.
To configure HSLINK.DLP, activate ProComm+ "Current Setup" ICON, then
highlight the button "Protocol: hslink.dlp" and click "Advanced!".
Crash Recovery settings
Off
Disable crash recovery. Do not allow received files to
overwrite existing files. Partial files from aborted
transfers are automatically erased.
Full Recovery
Enable full crash recovery. This option causes partial
files from aborted transfers to be retained. If a
received file matches the filename of an existing file,
the contents of the file is compared to the received
file, and only those blocks which differ are
transferred.
Overwrite
Disable crash recovery. Allow received files to
overwrite existing files. Partial files from aborted
transfers are retained.
Block Size settings
256 Each block will be 265 bytes in length
1k Each block will be 1024 bytes in length
2k Each block will be 2048 bytes in length
4k Each block will be 4096 bytes in length
Acknowledge Window Settings
Full streaming (none)
In this mode of operation, blocks are transmitted
continuously with no acknowledgement of receipt. This
mode of operation is useful when error correcting modems
are used or when flow control is not required.
8 blocks (normal)
In this mode of operation, up to 8 blocks may be in
transit before an acknowledgement of receipt is
required. Once acknowledgement is received, the next
block will be transmitted. This acknowledgement process
provides a form of flow control which is useful when
other forms of flow control are not totally reliable.
4 blocks (PC Pursuit)
When operating HSLINK on a PC Pursuit connection, I
recommend the settings of Ack Window = 4, Block size =
256, Xon/Xoff = ON, Minimal Blocks = OFF.
File Settings
Transfer Log File:
This defines the DSZLOG-style transfer result log
filename. If left blank, the DSZLOG environment
variable specifies this filename. If no DSZLOG
environment setting exists, no logfile will be produced.
Error Log File:
This defines the filename for a detailed transfer and
error log to be created. If left blank, the HSERR
environment variable specifies this filename. If no
HSERR environment setting exists, no logfile will be
produced.
Duplicate Checklist:
This defines the filename of a duplication checklist
file. The duplication checklist file can contain a list
of directories or filenames to check for duplication.
If an incoming file matches a filename or a file in a
directory listed here, the file will be rejected.
NOTE: duplication checking is active ONLY when Crash
Recovery is set to "OFF". Other crash recovery modes
grant HSLINK permission to modify existing files, making
a duplication checklist meaningless.
Other Options
Original File Time Stamp
Checking this option causes the original file's time and
date to be preserved. Unchecking the option causes the
current time and date to be given to a file when it is
received.
Minimal Blocks
Checking this option causes HSLINK to minimize each
block transmitted, resulting in an increase in thruput.
Unchecking this option causes HSLINK to include
additional information in each block as required by PC
Pursuit or some other environments.
File Buffering
Checking this option causes HSLINK to use a 10k buffer
for files being received or transmitted. Unchecking
this option causes HSLINK to read or write each file
block as it is sent or received.
Large Status Display
Checking this option causes a larger file transfer
status display to be used.
XON/XOFF Handshake
Checking this option indicates that you desire to use
the XON/XOFF software handshake. Unchecking this option
indicates that you do not desire this handshake, but
that you will still use it if the remote unit desires
its use.
Force Remote to use Local Settings
Checking this option causes forces the remote unit to
use your settings for Minimal Blocks, Block Size, Ack
Window and Xon/Xoff. Unchecking this option allows the
remote unit to override your settings, or causes
compromise settings to be negotiated according to both
local and remote options.
Allow Bidirectional Transfers
Checking this option allows files to be received while
files are being transmitted. Unchecking this option
causes HSLINK to reject any incoming files when files
are being transmitted.
Beeper in Chat Mode
Checking this option allows the remote unit to beep your
speaker with the "page remote" or ^G key in CHAT mode.
Unchecking this option forces your speaker to remain
silent at all times.
Controls
OK
This causes current settings to be saved.
Cancel
This causes changes in settings to be discarded and
previous settings to remian in effect.
Use Default
This resets all settings to their original default
values, which should work properly in most
circumstances.
Register...
This allows you to enter your personal registration code
as well as your name and company name.
DIFFERENCES
HSLINK.DLP is similar to the standard DOS HSLINK with the following
exceptions:
* GIF files are automatically displayed onscreen during file transfer.
* The command line is automatically provided by PROWIN. Modify the
HSLINK.INI file provide protocol options.
* The "REGISTER" screen now accepts DLP HS/Link activation codes.
Sorry, but DOS HS/Link registrations are not valid for the Windows
DLP version.
!!!!!!!!!!!!!! BETA TEST VERSION !!!!!!!!!!!!!!!!
This version may seem to work, but it has not been fully tested and
is not an official release! You have been warned.
PLEASE MAKE FREQUENT BACKUP COPIES OF ALL CRITICAL FILES
!!!!!!!!!!!!!! BETA TEST VERSION !!!!!!!!!!!!!!!!
Beta Testing is a means of getting widespread exposure to unfinished
versions of a program during the development process. The idea is for as
many users as possible to "beta test" the program and to make suggestions
and report bugs. This type of widespread testing can lead to a very
stable and bug-free finished product (the RELEASE version). Please read
HSLINK.NEW to see what has been changed recently.
If you encounter problems or would like to make a suggestion, please
contact the author. HS/Link product support is available by voice at
(818) 891-4228 between 9am and 6pm pacific time, TUESDAY through
SATURDAY.
To obtain newer beta test versions, please call (818) 891-1344 and select
the "free downloading" service from the initial "special services menu".
You need not be a registered Tool Shop BBS user to access this special
service.