(Node.js) Duplicate TLS 1.2 SOAP Request that uses .NET HttpWebRequest

This example shows how to duplicate a SOAP request that uses .NET's HttpWebRequest and requires TLS 1.2.

        string xmlRequest = "...envelope..."

        System.Net.ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

        string url = "https://www3.gsis.gr/webtax2/wsgsis/RgWsPublic/RgWsPublicPort?WSDL";
        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
        req.Method = "POST";
        req.ContentType = "text/xml;charset=UTF-8";

        byte[] reqBytes = new System.Text.UTF8Encoding().GetBytes(xmlRequest);

        req.ContentLength = reqBytes.Length;

        try {
            using (System.IO.Stream reqStream = req.GetRequestStream()) {
                reqStream.Write(reqBytes, 0, reqBytes.Length);
                reqStream.Flush();
                reqStream.Close();
            }

        } catch (Exception ex) {
            actionLogger.AddError(ex.Message, null);
            actionLogger.Validate();
        }

        string xmlResponse = null;
        using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse()) {
            try {
                using (System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream())) {
                    xmlResponse = sr.ReadToEnd();
                    sr.Close();
                }
            } catch (Exception ex) {
                actionLogger.AddError(ex.Message, null);
                actionLogger.Validate();
            } finally {
                resp.Close();
            }
        }

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 assumes Chilkat HTTP to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var http = new chilkat.Http();

    var req = new chilkat.HttpRequest();
    req.HttpVerb = "POST";
    req.ContentType = "text/xml";
    req.SendCharset = true;
    req.Charset = "utf-8";
    req.Path = "/webtax2/wsgsis/RgWsPublic/RgWsPublicPort?WSDL";

    var xmlRequest = "...SOAP envelope...";
    req.LoadBodyFromString(xmlRequest);

    http.FollowRedirects = true;

    // Chilkat will automatically offer TLS 1.2.  It is the server that
    // chooses the TLS protocol version.  Assuming the server wishes to use
    // TLS 1.2, then that is what will be used.
    var resp = new chilkat.HttpResponse();
    success = http.HttpSReq("www3.gsis.gr",443,true,req,resp);
    if (success == false) {
        console.log(http.LastErrorText);
        return;
    }

    var xmlResponse = resp.BodyStr;
    console.log(xmlResponse);

}

chilkatExample();