Add a Request Header to a REST Request

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Demonstrates Rest.AddHeader, which adds an HTTP request header field. The 1st argument is the field name and the 2nd is the value. Adding a header whose name already exists replaces the previous value.

let rest = chilkat::Rest::new();

// Connect to the REST server.  The 3rd argument enables TLS (use true for HTTPS on port 443),
// and the 4th enables automatic reconnection if the connection is dropped between requests.
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;
}

// Add request header fields.  The 1st argument is the field name and the 2nd is the value.
// Adding a header with a name that already exists replaces the previous value.
let _ = rest.add_header("Accept", "application/json");
let _ = rest.add_header("X-Custom-Header", "example-value");

let Ok(response_text) = rest.full_request_no_body("GET", "/api/data") else {
    println!("{}", rest.last_error_text());
    return;
};

println!("{}", response_text);