FTP SSL Problem

This is a discussion on FTP SSL Problem within the Networking/Device Communication forums, part of the General Programming Boards category; Hi, I am having some problem coding for a FTP client which should have SSL enables (128 bit encryption) in ...

  1. #1
    Sacrajit
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    FTP SSL Problem

    Hi,
    I am having some problem coding for a FTP client which should have SSL enables (128 bit encryption) in C in visual Studio enviornment. I can connect to the FTP server not using the default port(21). But the server sends a error message 431 - Unable to negotiate secure command connection. I dont know how to begin the SSL/TLS negotiation. After the controll connnection when I am sendning the PORT ftp command the server returns error 10054. Any win32 API or a sample code will be of great help.

    regards

    Sacrajit
    Last edited by sacrajit; 03-18-2005 at 11:52 AM.

  2. #2
    and the hat of wrongness Salem's Avatar
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    > I dont know how to begin the SSL/TLS negotiation
    Everything to do with Internet protocols is described in RFC's
    www.rfc-editor.org

    If you haven't already, get www.ethereal.com and use it to watch all the packets go by. Compare what you do with what a proper program does.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  3. #3
    Sacrajit
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    Hi all,
    i am using openssl now and able to complete the SSL/TLS negotiation succesfully . The server responds for the first time and then send a time out error of 421.

    If I use SSL_read - it times out .. but if I use recv() then send response but in encrypted format. (not printable) .. any suggestions.

    thanks

    sacrajit

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