(Node.js) Get Response Header for Method that does not Return HttpResponse Object

Demonstrates how to get the response header and individual response header fields for a method that does not return an HTTP response object. (If a method returns an HHTTP response object, then the response header information should be obtained from the response object.)

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 http = new chilkat.Http();

    var strHtml = http.QuickGetStr("https://www.duckduckgo.com/");
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    console.log(http.LastResponseHeader);

    // Here's a sample HTTP response header:

    // Server: nginx
    // Date: Wed, 30 Sep 2020 13:13:02 GMT
    // Content-Type: text/html; charset=UTF-8
    // Transfer-Encoding: chunked
    // Connection: keep-alive
    // Vary: Accept-Encoding
    // ETag: W/"5f7371f4-1683"
    // Strict-Transport-Security: max-age=31536000
    // X-Frame-Options: SAMEORIGIN
    // Content-Security-Policy: default-src https: blob: data: 'unsafe-inline' 'unsafe-eval'; frame-ancestors 'self'
    // X-XSS-Protection: 1;mode=block
    // X-Content-Type-Options: nosniff
    // Referrer-Policy: origin
    // Expect-CT: max-age=0
    // Expires: Wed, 30 Sep 2020 13:13:01 GMT
    // Cache-Control: no-cache
    // Content-Encoding: gzip

    // We can load it into a Chilkat MIME object to get header field values:
    var mime = new chilkat.Mime();

    var success = mime.LoadMime(http.LastResponseHeader);
    if (success == false) {
        console.log(mime.LastErrorText);
        return;
    }

    // Get MIME header field values using Chilkat MIME...
    console.log("----");
    console.log("ETag: " + mime.GetHeaderField("ETag"));

}

chilkatExample();