DataFlex

Disconnect from an FTP Server

Demonstrates the Chilkat Ftp2.Disconnect method, which ends the FTP session and closes the control connection. It takes no arguments. When connected, Chilkat sends QUIT and then closes the socket.

Background: Sending QUIT before closing is the polite shutdown — it lets the server finalize the session cleanly rather than seeing an abrupt socket drop. The method is idempotent, so calling it when nothing is connected, or a second time after the session is already closed, still succeeds; that makes it safe to put in cleanup paths without guarding it.

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Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoFtp
    String sTemp1

    Move False To iSuccess

    //  Demonstrates the Ftp2.Disconnect method, which ends the FTP session and closes the control
    //  connection.  It takes no arguments.  When connected, Chilkat sends QUIT and then closes the
    //  socket.

    Get Create (RefClass(cComChilkatFtp2)) To hoFtp
    If (Not(IsComObjectCreated(hoFtp))) Begin
        Send CreateComObject of hoFtp
    End

    Set ComHostname Of hoFtp To "ftp.example.com"
    Set ComUsername Of hoFtp To "myFtpLogin"

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    Set ComPassword Of hoFtp To "myPassword"

    //  Connect and log in (Connect performs both).
    Get ComConnect Of hoFtp To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  ... perform FTP operations ...

    //  Disconnect is idempotent: calling it when no connection exists, or calling it again after the
    //  session is already closed, still succeeds.
    Get ComDisconnect Of hoFtp To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Disconnected."


End_Procedure