Path: utzoo!attcan!utgpu!utstat!jarvis.csri.toronto.edu!rutgers!apple!amdahl!pccuts!acs
From: acs@pccuts.pcc.amdahl.com (Tony Sumrall)
Newsgroups: comp.sys.amiga
Subject: Re: Xmodem bug in VT100 2.8a?
Summary: Yup, looks like it
Keywords: xmodem checksum receive routine
Message-ID: <800@pccuts.pcc.amdahl.com>
Date: 30 May 89 17:43:52 GMT
References: <7082@ecsvax.UUCP>
Reply-To: acs@pccuts.pcc.amdahl.com (Tony Sumrall)
Organization: Amdahl Corporation, Sunnyvale CA
Lines: 25

In article <7082@ecsvax.UUCP> kms@ecsvax.UUCP (Ken Steele) writes:
->There appears to be a bug in the xmodem checksum receive routine in
->VT1002.8A.  The symptoms are described below.
-> ...
->The problem seems to be that when receive is first started, a NAK is
->sent out.  But NO other NAK's are sent out afterwards.  My
->understanding of the xmodem protocol is that the receiver should
->continue to send out NAKs periodically for a very long time, as the
->sender is looking for that prior to sending the first block.
->
->Has anyone run into this problem?  Or did I miss something?

No one else has reported this problem.  No, you didn't miss anything, it
appears that *I* did (i.e. it looks like a you have found a bug in the
XMODEM protocol implementation in 2.8A and prior versions).  I'll fix it
2.9.

->Ken Steele   Dept. of Psychology    kms@ecsvax.[bitnet || UUCP]
->             Mars Hill College      kms@ecsvax.uncecs.edu
->             Mars Hill, NC 28754       
-- 
Tony Sumrall acs@pccuts.pcc.amdahl.com <=> amdahl!pccuts!acs

[ Opinions expressed herein are the author's and should not be construed
  to reflect the views of Amdahl Corp. ]