What is a POST request in C#?

Question

Computer networks

There is a code on sharp, you need to rewrite it on nodejs. I don't understand what the request is about.

using System;
using System.Text;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.IO;
using System.Web;
namespace DemoUseClientCertificate
{
    class Program
    {
        static void Main(string[] args)
        {
            string url = "https://apitest.startssl.com";
            string jsonstr = "{\"tokenID\" : \"tk_e5e1df6d15bb48728e3f136864c141e5\",\"actionType\" : \"ApplyWebControl \",\"hostname\" : \"a.startssl.com\"}";
            string poststr = "RequestData=" + HttpUtility.UrlEncode(jsonstr);
            byte[] data = Encoding.Default.GetBytes(poststr);
            string ClientCert_SerialNumber = "your client cert serial number";
    
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
            try
            {
                X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
                store.Open(OpenFlags.ReadOnly);
                X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySerialNumber, ClientCert_SerialNumber, false);
                myRequest.Method = "POST";
                myRequest.ContentType = "application/x-www-form-urlencoded";
                myRequest.ContentLength = data.Length;
                myRequest.ClientCertificates.Add(certs[0]);
                Stream newStream = myRequest.GetRequestStream();
                newStream.Write(data, 0, data.Length);
                newStream.Close();
                var response = (HttpWebResponse)myRequest.GetResponse();
                using (var reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("UTF-8")))
                {
                    string result = reader.ReadToEnd();
                    reader.Close();
                    response.Close();
                    Console.WriteLine(result);
                }
            }
            catch (Exception ex)
            {
            }
        }
    }
}

While writing this. Please help me write an analogue of this request on a node.

var querystring = require('querystring');

var url = 'https://apitest.startssl.com';

var jsonstr = { "tokenID" : "tk_50ab059220e545f881652eac98772c21", 
        "actionType" : "ApplyWebControl", 
        "hostname" : "a.startssl.com"};

var poststr = 'RequestData=' + querystring.stringify(jsonstr);
var bytes_data = [];
for (var i = 0; i < poststr.length; ++i) {
    bytes_data.push(poststr.charCodeAt(i));
}

var ClientCert_SerialNumber = '666E1337C65075631C46ECFF79AFA301';

Answer 1

What exactly do you not understand?
As for analogues, you can check with Fiddler or Wireshark.

Answer 2

Edge.js - allows you to execute pieces of C # code on a node. Conveniently. Try

Answer 3

1) a certificate is retrieved from the current user's certificate store by its serial number;
2) the client certificate received from the repository is attached to the request;
3) the content of poststr is written to the body of the POST request;
4) the request is sent and the program waits for a response from the server;
5) the response is encoded into the result string and output to the console;
I have no idea how to extract the certificate from the Windows storage in the node. The rest you will deal with yourself.