Rust

Simple REST Example

See more REST Examples

Demonstrates a very simple RESTful API call to get a stock time series daily (quotes) from Alpha Vantage. Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

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

// Connect to the REST server.
let b_tls = true;
let port = 443;
let b_auto_reconnect = true;
if rest.connect("www.alphavantage.co", port, b_tls, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// Get a stock quote:
// Sending GET request to https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=my_api_key
let _ = rest.add_query_param("function", "TIME_SERIES_DAILY").is_ok();
let _ = rest.add_query_param("symbol", "AAPL").is_ok();
let _ = rest.add_query_param("apikey", "my_api_key").is_ok();
let Ok(response_json) = rest.full_request_no_body("GET", "/query") else {
    println!("{}", rest.last_error_text());
    return;
};

println!("{}", response_json);

// Sample response:
// {
//     "Meta Data": {
//         "1. Information": "Daily Prices (open, high, low, close) and Volumes",
//         "2. Symbol": "AAPL",
//         "3. Last Refreshed": "2019-12-06",
//         "4. Output Size": "Compact",
//         "5. Time Zone": "US/Eastern"
//     },
//     "Time Series (Daily)": {
//         "2019-12-06": {
//             "1. open": "267.4800",
//             "2. high": "271.0000",
//             "3. low": "267.3000",
//             "4. close": "270.7100",
//             "5. volume": "25447644"
//         },
//         "2019-12-05": {
//             "1. open": "263.7900",
//             "2. high": "265.8900",
//             "3. low": "262.7300",
//             "4. close": "265.5800",
//             "5. volume": "18661343"
//         },
//         "2019-12-04": {
//             "1. open": "261.0700",
//             "2. high": "263.3100",
//             "3. low": "260.6800",
//             "4. close": "261.7400",
//             "5. volume": "16810388"
//         },
// ...
//         "2019-07-18": {
//             "1. open": "204.0000",
//             "2. high": "205.8800",
//             "3. low": "203.7000",
//             "4. close": "205.6600",
//             "5. volume": "18582161"
//         }
//     }
// }