const urllibRequest = (url, method, data, pfx, pass) => {
 return new Promise(function(resolve, reject) {
  let options = {
   data: data,
   method: method,
   pfx: pfx,
   passphrase: pass,
   rejectUnauthorized: false
  }
  urllib.request(url, options, function(err, data, res) {
   if (err) {
    return reject(err);
   }
   return resolve(data.toString());
  });
 });
}

const httpRequest = (url, method, data, pfx, pass) => {
 return new Promise((resolve, reject) => {
  let options = {
   url: url,
   method: method,
   form: data,
   headers: {
    'Content-type': 'application/x-www-form-urlencoded'
   },
   agentOptions: {
    pfx: pfx,
    passphrase: pass,
    rejectUnauthorized: false
   }
  };
  request(options, function(err, httpResponse, data) {
   if (err) {
    return reject(err);
   }
   return resolve(data);
  })
 });
}