Set a MIME Body from Binary Bytes (BinData)

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Demonstrates the Chilkat Mime.SetBodyBd method, which sets the decoded body bytes from a BinData, changes the transfer encoding to base64, and preserves the bytes exactly. The only argument is the BinData.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the direct way to put arbitrary binary content into a part from memory — a generated image, a decrypted blob — without a temporary file. Chilkat base64-encodes it so the bytes survive text-based transports unchanged. Note it does not set a Content-Type or disposition, so assign those yourself to describe what the bytes are.

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    success := false

    //  Demonstrates the Mime.SetBodyBd method, which sets the decoded body bytes from a BinData,
    //  changes the transfer encoding to base64, and preserves the bytes exactly.  The only argument is
    //  the BinData.

    //  Put the binary body bytes into a BinData.
    bd := chilkat.NewBinData()
    success = bd.LoadFile("qa_data/photo.jpg")
    if success == false {
        fmt.Println(bd.LastErrorText())
        bd.DisposeBinData()
        return
    }

    mime := chilkat.NewMime()

    //  Set a Content-Type for the binary content (SetBodyBd does not set one itself).
    mime.SetContentType("image/jpeg")

    success = mime.SetBodyBd(bd)
    if success == false {
        fmt.Println(mime.LastErrorText())
        bd.DisposeBinData()
        mime.DisposeMime()
        return
    }

    fmt.Println("Body set from ", bd.NumBytes(), " bytes.")

    bd.DisposeBinData()
    mime.DisposeMime()