Rust

Set a MIME Body from Binary Bytes (BinData)

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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Rust


// 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.
let bd = chilkat::BinData::new();
if bd.load_file("qa_data/photo.jpg").is_err() {
    println!("{}", bd.last_error_text());
    return;
}

let mime = chilkat::Mime::new();

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

if mime.set_body_bd(&bd).is_err() {
    println!("{}", mime.last_error_text());
    return;
}

println!("Body set from {} bytes.", bd.num_bytes());