• src/sbbs3/xmodem.c

    From rswindell@VERT to CVS commit on Saturday, August 24, 2019 09:07:45
    src/sbbs3 xmodem.c 1.50 1.51
    Update of /cvsroot/sbbs/src/sbbs3
    In directory cvs:/tmp/cvs-serv16566

    Modified Files:
    xmodem.c
    Log Message:
    YMODEM/YMODEM-G:
    Purge any pending receive data before sending the YMODEM header block.
    This helps to insure that the next byte received from the receiver
    (ACK, NAK, 'C' or 'G') is an actual response to the header block we sent and not some other pending receiver start-request.

    The problem that was observed was upon YMODEM-G uploads to the BBS/sexyz, the receiver (sexyz) would send a few 'G's before the sender (e.g. SyncTERM)
    would get around to sending the YMODEM header block (while the user selects
    the file path/name to upload, takes a few seconds). The sender would see
    the first of these buffered 'G's received while selecting a file as an acknowledgement of the header block and then immediatley start sending file data. Meanwhile, the receiver sees incoming file data *before* he actually acknowledges the header block and throws it out as unexpectd data, so we're out-of-sync and with YMODEM-G there is no recovery/retry scheme.



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  • From rswindell@VERT to CVS commit on Saturday, August 31, 2019 22:39:25
    src/sbbs3 xmodem.c 1.51 1.52
    Update of /cvsroot/sbbs/src/sbbs3
    In directory cvs:/tmp/cvs-serv4369

    Modified Files:
    xmodem.c
    Log Message:
    Use the preferred US-English spelling of "Canceled".


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  • From Rob Swindell@VERT to Git commit to main/sbbs/master on Monday, November 30, 2020 10:01:41
    https://gitlab.synchro.net/main/sbbs/-/commit/d8cb42f85e8b14aee7ec52a6
    Modified Files:
    src/sbbs3/xmodem.c
    Log Message:
    Fix failure to recognize remote cancel if send buffer full.

    xmodem_cancel() would return an error if putcom() failed, *before*
    setting the "cancelled" [sic] flag. xmodem_cancel() in response to the
    receipt of a remote cancel request (^X character).

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  • From Rob Swindell@VERT to Git commit to main/sbbs/master on Friday, December 04, 2020 08:17:14
    https://gitlab.synchro.net/main/sbbs/-/commit/c3619942a04c89f384c3cfc1
    Modified Files:
    src/sbbs3/xmodem.c
    Log Message:
    Change rev to 2.0.

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