Rust

Set a Multipart Part Body from a StringBuilder

Demonstrates Rest.SetMultipartBodySb, which sets the text body of the selected multipart part from a StringBuilder.

Background. A multipart request is assembled part by part: the part selector chooses the part being built, header fields describe it, and a SetMultipartBody method supplies its content. The request is then sent with a multipart send or full-request method.

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Rust


let rest = chilkat::Rest::new();
let b_tls = true;
let b_auto_reconnect = true;
if rest.connect("example.com", 443, b_tls, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// Select the multipart part to build, and set its header fields.
rest.set_part_selector("1");
let _ = rest.add_header("Content-Disposition", "form-data; name=\"field1\"");
let _ = rest.add_header("Content-Type", "application/json");

// Set the text body of the selected part from a StringBuilder.
let sb_body = chilkat::StringBuilder::new();
let _ = sb_body.append("{ \"key\": \"value\" }");
if rest.set_multipart_body_sb(&sb_body).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

let Ok(response_text) = rest.full_request_multipart("POST", "/api/upload") else {
    println!("{}", rest.last_error_text());
    return;
};

println!("{}", response_text);