(DataFlex) SFTP Fsync -- Flush an Open File on the Server

Demonstrates how to flush the contents of an open file on the server. This example only works for servers that implement the fsync@openssh.com extension.

Note: This example requires Chilkat v9.5.0.71 or later.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoSftp
    Boolean iSuccess
    String sHandle
    String sTemp1
    Boolean bTemp1

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    Get Create (RefClass(cComChilkatSFtp)) To hoSftp
    If (Not(IsComObjectCreated(hoSftp))) Begin
        Send CreateComObject of hoSftp
    End

    // Pass a domain or IP address..
    Get ComConnect Of hoSftp "my-sftp-server.com" 22 To iSuccess
    If (iSuccess = True) Begin
        Get ComAuthenticatePw Of hoSftp "mySFtpLogin" "mySFtpPassword" To iSuccess
    End

    If (iSuccess = True) Begin
        Get ComInitializeSftp Of hoSftp To iSuccess
    End

    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Open a file on the server for writing.
    Get ComOpenFile Of hoSftp "myTest.txt" "writeOnly" "createTruncate" To sHandle
    Get ComLastMethodSuccess Of hoSftp To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Write some text to the file:
    Get ComWriteFileText Of hoSftp sHandle "ansi" "abcdefghijklmnopqrstuvwxyz" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Make sure the server flushes what we wrote to the disk..
    // (this is requires a server that implements the fsync@openssh.com SFTP protocol extension)
    Get ComFsync Of hoSftp sHandle To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // ....
    // ....

    Get ComWriteFileText Of hoSftp sHandle "ansi" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Close the file.
    Get ComCloseHandle Of hoSftp sHandle To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Success."


End_Procedure