Date: Sat, 28 Dec 1996 16:44:17 -0800 (PST) From: Jake Hamby <jehamby@lightside.com> To: questions@freebsd.org Subject: Can I use ZMODEM over Kermit/Telnet? Message-ID: <Pine.BSF.3.95.961228162851.371A-100000@hamby1>
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I'd like to be able to download files from Delphi, which is accessible from telnet or a Web interface. The problem is that the file libraries aren't available through the Web interface yet, and I'd like to be able to download some stuff before then. The telnet interface supports download by Kermit or X/Y/ZMODEM. On FreeBSD, I've tried to telnet in using Kermit, but the remote end has a lousy Kermit protocol with a fixed 90-byte packet size, so the transfer rate is abysmal (think 2400 bps modem speeds :-( ). However, I haven't been able to get ZMODEM to work through telnet, even when I telnet to myself! Is there some limitation of the ZMODEM protocol that prevents it from working through telnet, or is there a bug in the port of Kermit to FreeBSD which isn't redirecting the stdio to ZMODEM properly? Here is a typical session: > kermit C-Kermit 6.0.192, 6 Sep 96, for FreeBSD Copyright (C) 1985, 1996, Trustees of Columbia University in the City of New York. Default file-transfer mode is TEXT Type ? or HELP for help. [/usr/home/jehamby/c64] C-Kermit>telnet localhost Trying 127.0.0.1... Connecting to host localhost. The escape character is Ctrl-\ (ASCII 28, FS) Type the escape character followed by C to get back, or followed by ? to see other options. FreeBSD (hamby1.lightside.net) (ttyp3) login: jehamby Password: Last login: Sat Dec 28 16:35:25 from localhost ... login stuff deleted > sz classic2.mp3 **wB00000000000000 p (Back at hamby1.lightside.net) [/usr/home/jehamby/c64] C-Kermit><rz Receiving: classic2.mp3 Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Bytes received: 0/ 23552 BPS:0 ETA 00:00 Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Bytes received: 0/ 23552 BPS:0 ETA 00:00 Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC Retry 0: Bad CRC rz: classic2.mp3 removed. Transfer incomplete ?Command exit status: 1 [/usr/home/jehamby/c64] C-Kermit> I'm using FreeBSD-current, and I tried both lrzsz and rzsz for ZMODEM. I've tried fiddling with the various parameters, and the problem seems to occur regardless of the setting of TERM AUTODOWNLOAD, FILE TYPE, or TERM BYTESIZE. The only ZMODEM option that looks relevant is "-e", escape control characters, but it doesn't help. It looks like telnet is not providing a clean connection, but what can I do? Any help would be greatly appreciated. Thanks! ------------------------------------------------------------------------------ |Jake Hamby| Ask me about Unix, FreeBSD, Solaris, The Tick, BeOS, or NT, eh? | ------------------------------------------------------------------------------ "This space intentionally left blank."
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