(Node.js) REST through SSH Tunnel

Demonstrates how to connect through an SSH Tunnel (via port-forwarding) to make REST API calls.

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.

    var tunnel = new chilkat.Socket();

    var sshHostname = "sftp.example.com";
    var sshPort = 22;

    // Connect to an SSH server and establish the SSH tunnel:
    var success = tunnel.SshOpenTunnel(sshHostname,sshPort);
    if (success !== true) {
        console.log(tunnel.LastErrorText);
        return;
    }

    // Authenticate with the SSH server via a login/password
    // or with a public key.
    // This example demonstrates SSH password authentication.
    success = tunnel.SshAuthenticatePw("mySshLogin","mySshPassword");
    if (success !== true) {
        console.log(tunnel.LastErrorText);
        return;
    }

    //  OK, the SSH tunnel is setup.  Now open a channel within the tunnel.
    //  (Any number of channels may be created from the same SSH tunnel.
    //  Multiple channels may coexist at the same time.)

    // This example connects to a REST server through the SSH tunnel.
    // It will connect to the Amazon AWS service for this example.
    var rest = new chilkat.Rest();
    // channel: Socket
    var channel;

    var bTls = true;
    var port = 443;
    var maxWaitMs = 5000;

    // This returns a socket object that is a single channel within the SSH tunnel.
    channel = tunnel.SshOpenChannel("s3.amazonaws.com",port,bTls,maxWaitMs);
    if (tunnel.LastMethodSuccess !== true) {
        console.log(tunnel.LastErrorText);
        return;
    }

    // Use the connection.  (This connection is a TLS running on an SSH channel through an SSH tunnel.
    // In other words, TLS is wrapped within the SSH tunnel.)
    success = rest.UseConnection(channel,true);
    if (success !== true) {
        console.log(rest.LastErrorText);

        return;
    }

    // Provide AWS credentials for the REST call.
    var authAws = new chilkat.AuthAws();
    authAws.AccessKey = "AWS_ACCESS_KEY";
    authAws.SecretKey = "AWS_SECRET_KEY";
    authAws.ServiceName = "s3";
    success = rest.SetAuthAws(authAws);

    // List all buckets for the account...
    var responseXml = rest.FullRequestNoBody("GET","/");
    if (rest.LastMethodSuccess !== true) {
        console.log(rest.LastErrorText);

        return;
    }

    var xml = new chilkat.Xml();
    success = xml.LoadXml(responseXml);

    // Show the full XML returned.
    console.log(xml.GetXml());

    // Iterate over the buckets, showing each bucket name.
    success = xml.FindChild2("Buckets");
    if (xml.FirstChild2() == true) {
        console.log(xml.GetChildContent("Name"));
        while ((xml.NextSibling2() == true)) {
            console.log(xml.GetChildContent("Name"));
        }

    }

    // Move the internal pointer back to the root node.
    xml.GetRoot2();


}

chilkatExample();