Re: ax25spyd help

From: Thomas Osterried (znm@thyssenkrupp.com)
Date: Sun Oct 07 2001 - 04:54:50 EEST

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    > The problem arises when someone telnets in from a Windows machine (and
    > some still try that!). The line terminators between Linux and Windows
    > are not the same! (Windows telnet is expecting a CR/LF instead of
    > just a LF).

    as far as i understand rfc1123 (and considering how standard
    implementations like smtp, nntp, .. follow it):

    | The Telnet end-of-line sequence CR LF MUST be used to send
    | Telnet data that is not terminal-to-computer (e.g., for Server
    | Telnet sending output, or the Telnet protocol incorporated
    | another application protocol).
    |
    | DISCUSSION:
    | To allow interoperability between arbitrary Telnet clients
    | and servers, the Telnet protocol defined a standard
    | representation for a line terminator. Since the ASCII
    | character set includes no explicit end-of-line character,
    | systems have chosen various representations, e.g., CR, LF,
    | and the sequence CR LF. The Telnet protocol chose the CR
    | LF sequence as the standard for network transmission.

    thus, every application you'll connect as user, MUST send <CR/LF> on the
    application layer. rfc854 proposed, and rfc1123 concreted it.

    so win$ may behave correct, if it refuses to handle "foo<LF>" data
    as you may expect.

    > Any suggestions on the best way to solve this? I have read the man
    > pages on ax25spyd, and no mention is made of this problem. I suppose,
    > one answer would be to run another daemon that listened to the 14091
    > port and provided reformatted output on another port. Any other
    > ideas?

    if ax25sypd does not send <CR><LF> on a TCP connection for a user
    application, this should be fixed first.

    73,
            - thomas, dl9sau
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