Send a Form-URL-Encoded REST Request

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Demonstrates Rest.FullRequestFormUrlEncoded, which sends an application/x-www-form-urlencoded request. The body is built from the query parameters added to the object, and the response body is returned as text.

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;
}

// The application/x-www-form-urlencoded body is built from the query parameters added to the object.
let _ = rest.add_query_param("username", "alice");
let _ = rest.add_query_param("action", "login");

// Send the form-url-encoded request.  The parameters become the request body rather than the URL
// query string.
let Ok(response_text) = rest.full_request_form_url_encoded("POST", "/api/login") else {
    println!("{}", rest.last_error_text());
    return;
};

println!("{}", response_text);