(Node.js) Automatically Determine FTP Proxy Method

Tries each of the five possible ProxyMethod settings and returns the value (1-5) of the ProxyMethod that succeeded.

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 ftp = new chilkat.Ftp2();

    ftp.Hostname = "www.example-code.com";
    ftp.Username = "example-code.com";
    ftp.Password = "****";

    ftp.ProxyHostname = "ftp.myproxyhost.com";
    ftp.ProxyPort = 21;
    // Note: Your FTP Proxy server may or may not require authentication.
    ftp.ProxyUsername = "myProxyUsername";
    ftp.ProxyPassword = "myProxyPassword";

    // The ProxyMethod should be an integer value between 1 and 5.
    // If you know your FTP proxy server's authentication scheme,
    // you may set it directly.  To determine the ProxyMethod,
    // call DetermineProxyMethod.  A return value of -1 indicates a failure.
    // A return value of 0 indicates that nothing worked.
    // A return value of 1-5 indicates the ProxyMethod that was 
    // successful, and this should be the value used for the ProxyMethod
    // property.

    var pMethod = ftp.DetermineProxyMethod();
    console.log(pMethod);

    var success = ftp.Disconnect();

}

chilkatExample();