(Node.js) Use Socket Object for the Connection

The Chilkat Socket API provides many features for establishing connections, which includes the following:

• Connect through an HTTP proxy
• Connect through a SOCKS proxy
• Connect through an SSH tunnel
• Binding to a local IP address
• Client-side Certificates (two-way SSL/TLS)
• Public Key Pinning for TLS connections
• Controlling TLS ciphers

Rather than reproducing all of the properties and methods required for these features, the REST object can use a Socket object's connection by calling the UseConnection method. This allows for an application to use the features of the Socket API to establish the connection, and then use it from the REST API.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    // This example shows how to use the Chilkat socket object's connection.
    var rest = new chilkat.Rest();
    var socket = new chilkat.Socket();

    // Establish the connection using the socket object:
    var bTls = true;
    var port = 443;
    var maxWaitMs = 5000;
    var success = socket.Connect("www.alphavantage.co",port,bTls,maxWaitMs);
    if (success !== true) {
        console.log("Connect Failure Error Code: " + socket.ConnectFailReason);
        console.log(socket.LastErrorText);
        return;
    }

    var bAutoReconnect = true;

    // Use the connection:
    success = rest.UseConnection(socket,bAutoReconnect);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // Get a stock quote:
    // Sending GET request to https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=my_api_key
    success = rest.AddQueryParam("function","TIME_SERIES_DAILY");
    success = rest.AddQueryParam("symbol","AAPL");
    success = rest.AddQueryParam("apikey","my_api_key");
    var responseJson = rest.FullRequestNoBody("GET","/query");
    if (rest.LastMethodSuccess !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    console.log(responseJson);

    // 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"
    //         }
    //     }
    // }

}

chilkatExample();