(Node.js) Manually Follow HTTP Redirects

Demonstrates how to manually follow redirects for an HTTP GET.

Note: This example requires Chilkat v11.0.0 or greater.

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

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var success = false;

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

    var http = new chilkat.Http();

    // The FollowRedirects property controls whether redirects
    // are automatically followed.  The default behavior is to
    // automatically follow redirects.

    // Explicitly set FollowRedirects so that redirects are NOT automatically taken:
    http.FollowRedirects = false;

    var resp = new chilkat.HttpResponse();
    success = http.HttpNoBody("GET","http://yandex.ru/",resp);
    if (success == false) {
        console.log(http.LastErrorText);
        return;
    }

    var status = resp.StatusCode;
    console.log("HTTP Response Status: " + status);

    // The FinalRedirectUrl property will contain the redirect URL
    // If FollowRedirects was equal to true, then all of the 
    // intermediate redirects (if any) would be followed until
    // there were no more redirects.  However, because 
    // FollowRedirects is not true, FinalRedirectUrl contains
    // the next redirect URL.

    var loopCount = 0;

    while ((status == 302)) {

        console.log("Redirect URL: " + http.FinalRedirectUrl);

        var nextUrl = http.FinalRedirectUrl;
        success = http.HttpNoBody("GET",nextUrl,resp);
        if (success == false) {
            console.log(http.LastErrorText);
            return;
        }

        status = resp.StatusCode;
        console.log("HTTP Response Status: " + status);

        // For safety, prevent infinite loops by
        // keeping a loopCount and only allows following a max 
        // of 10 redirects:
        loopCount = loopCount+1;
        if (loopCount > 10) {
            console.log("Too many redirects.");
            return;
        }

    }


}

chilkatExample();