2009-05-15 20:01:56 +00:00
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<META name="author" lang="en" content="Michiel Broek">
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<META name="copyright" lang="en" content="Copyright Michiel Broek">
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2011-06-21 18:57:02 +00:00
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<META name="description" lang="en" content="MBSE BBS Manual - Transfer Protocols">
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2009-05-15 20:01:56 +00:00
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<TITLE>MBSE BBS Setup - BBS Setup - Transfer Protocols.</TITLE>
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<BLOCKQUOTE>
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2011-05-22 19:21:15 +00:00
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<!-- MBSEADVERT -->
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2009-05-15 20:01:56 +00:00
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<div align='right'><h5>Last update 28-Nov-2004</h5></div>
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<div align='center'><H1>MBSE BBS Setup - BBS Setup - File Transfer Protocols.</H1></div>
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<H3>Introduction.</H3>
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<p>
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MBSE BBS has Xmodem, Ymodem, Ymodem-1K, Ymodem-G, Zmodem and Zmodem-8K (aka
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ZedZap) build in. In addition some external protocols are added to the setup but
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they are disabled by default. When the bbs is started the first time, a set of
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default protocols is created. The code used is based on the code from lrzsz
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package wich is based in the original code written by Chuck Forsberg.
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<p>
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Ymodem is receiver driven. That means if the user has selected plain Ymodem at
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the bbs and
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his local client is using Ymodem-G and when the user starts a download, the files are
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sent with Ymodem-G and not with plain Ymodem. With the same configuation an
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upload will be sent with plain Ymodem. With downloads, the Ymodem at the bbs
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will use what the client wants: 128 or 1K data blocks, crc of checksum, normal or
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streaming Ymodem-G.
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<p>
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Zmodem is transmitter driven. That means if the user has selected Zmodem-8K at
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the bbs and his local client is using normal Zmodem and when the user starts a
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download, the download is sent with Zmodem-8K. With the same configuration an
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upload will be sent with plain Zmodem. With uploads, the Zmodem at the bbs
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doesn't care what is being used, it will adapt to the client program.
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<p>
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These days (2004) nobody should use Xmodem anymore but when I wrote Ymodem you
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also get Xmodem because they are the same. Only with Xmodem the user has to
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type in the filename to both sides. If you enable it you are on your own and you
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may need to change the sources to make it really work because I didn't add
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typing in the filename at the bbs. Also, Xmodem is restricted to 8.3 filenames
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and the bbs uses long filenames.
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<P> <p>
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<H3>Transfer Protocols Setup.</H3>
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<P>
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<pre>
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<strong>Select Key </strong>The key the user has to press to select this protocol.
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<strong>Name </strong>The name of this protocol.
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<strong>Upload </strong>The full path and filename and parameters to upload files.
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<strong>Download </strong>The full path and filename and parameters to download files.
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<strong>Available </strong>If this protocol is available.
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<strong>Internal </strong>If this is internal or external protocol.
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<strong>Advice </strong>A small advice to the user shown before the transfer starts.
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<strong>Efficiency </strong>The efficiency in percent. Has no real meaning.
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<strong>Deleted </strong>If this protocol must be deleted.
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<strong>Sec. level </strong>The security level a user must have to select this protocol.
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</pre>
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Some fields cannot be changed when this is an internal protocol, they are
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hardcoded.
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<P>
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<IMG SRC="../images/protocol.png" alt='File transfer protocols'>
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<P>
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<A HREF="bbs.html"><IMG SRC="../images/larrow.png" ALT="Back" Border="0">Back to BBS index</A>
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