DataFlex

Download an FTP File into a BinData

Demonstrates the Chilkat Ftp2.GetFileBd method, which downloads a remote file and appends its bytes to a BinData. The first argument is the remote file path and the second is the BinData. No decoding or line-ending conversion is performed.

Background: Downloading into memory avoids a temporary local file when you intend to hash, parse, or forward the bytes immediately. Because it appends, existing bytes in the BinData are preserved — handy for concatenating several remote files, but clear it first when you want only this one. Since no conversion is applied, this is the safe way to pull content regardless of the current transfer type — which defaults to binary (SetTypeBinary), the recommended setting for essentially every file, text included. The SetTypeAscii mode applies legacy CRLF translation and is rarely needed.

Chilkat DataFlex Downloads

Download Chilkat for DataFlex

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoFtp
    Variant vBd
    Handle hoBd
    String sTemp1
    Integer iTemp1

    Move False To iSuccess

    //  Demonstrates the Ftp2.GetFileBd method, which downloads a remote file and appends its bytes to
    //  a BinData.  The 1st argument is the remote file path and the 2nd is the BinData.  No decoding
    //  or line-ending conversion is performed.

    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"

    Get ComConnect Of hoFtp To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  The BinData is not cleared automatically, so clear it first for replacement behavior.
    Get Create (RefClass(cComChilkatBinData)) To hoBd
    If (Not(IsComObjectCreated(hoBd))) Begin
        Send CreateComObject of hoBd
    End
    Get pvComObject of hoBd to vBd
    Get ComGetFileBd Of hoFtp "public_html/image.png" vBd To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComNumBytes Of hoBd To iTemp1
    Showln "Downloaded " iTemp1 " bytes into memory."

    Get ComDisconnect Of hoFtp To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End



End_Procedure