ios - create a "Production" certificate programmatically

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  Desired Functionality

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  19-02-14T22:02:49.750836+00:00 app[web.1]: Error: Not Found
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  const express = require('express');
  const path = require('path');
  const bodyParser = require('body-parser');
  const cors = require('cors');
  const mongoose = require('mongoose');
  const config = require('./API/config/database')
  const port = process.env.PORT || 3000; //Declare port 
  //Bring in the routes for the API (delete the default routes)
  const routesApi = require('./API/routes/index');
  const enforce = require('express-sslify');
  const app = express();
  
  
  /*express.static is a built in middleware function to serve static files.
   We are telling express server public folder is the place to look for the static files*/
  app.use(express.static(path.join(__dirname, 'public')));
  app.use(bodyParser.json());
  app.use(bodyParser.urlencoded({ extended: true }));
  app.use(cors());
  app.use(enforce.HTTPS({ trustProtoHeader: true }))
  
  //Use the API routes when path starts with /api
  app.use('/api', routesApi);
  
  // catch 404 and forward to error handler
  app.use(function (req, res, next) {
      const err = new Error('Not Found');
      err.status = 404;
      next(err);
  });
  
  //connect to db
  mongoose.connect(config.database, { useNewUrlParser: true });
  
  
  //Starts the server to host static files
  app.listen(port, () => {
      console.log(`Express Server listening on port:${port}`)
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• URL Requests with SSL Pinning in iOS App are failing for few websites

  I have an iOS app which has SSL pinning feature for few particular requests. As SSL Pinning is not working due to some reason, I have downloaded SSL Certificates for 3 sites using Firefox browser (or openssl command in mac terminal app) and kept in project local folder. Below are the results, when I run from the iOS app.

  URL: https://www.google.com/
  RESULT: WORKING with ssl enabled - I could see some response as HTML data in the console

  ---

  URL: https://www.google.com/
  RESULT: cancelled 2019-02-14 15:30:27.702813+0530 CertPinning[30996:733590] Task <B7EEA492-BE74-4E2A-9F47-2F8C964B8539>.<1> finished with error - code: -999 2019-02-14 15:30:27.704132+0530 CertPinning[30996:733596] Task <B7EEA492-BE74-4E2A-9F47-2F8C964B8539>.<1> HTTP load failed (error code: -999 [1:89])

  ---

  URL: https://api.sendgrid.com/
  RESULT
  Error Domain=NSURLErrorDomain Code=-999 "(null)" UserInfo={NSUnderlyingError=0x600001c7dd10 {Error Domain=NSURLErrorDomain Code=-999 "cancelled" UserInfo={NSErrorFailingURLStringKey=https://api.sendgrid.com/v3/mail/send, NSErrorFailingURLKey=https://api.sendgrid.com/v3/mail/send, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <F7FF95D3-ADC7-474C-8B38-0ABA09058AA8>.<1>" ), _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <F7FF95D3-ADC7-474C-8B38-0ABA09058AA8>.<1>, NSLocalizedDescription=cancelled}}, StatusCode=0, ResponseText=, ServiceType=Login, URL=https://api.sendgrid.com/v3/mail/send}

  ---

  Code from dowloaded from GITHUB

  import Foundation
  import UIKit
  
  class ViewController: UIViewController, URLSessionDelegate {
  
      override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
  
          let config = URLSessionConfiguration.default
          let session = URLSession(configuration: config, delegate: self, delegateQueue: nil)
  
          guard let url = URL(string: "https://www.google.com/") else { return }
  
          let task = session.dataTask(with: url) { (data, response, error) in
  
              if let error = error {
                  print(error.localizedDescription)
                  return
              }
  
              if let data = data, let contents = String(data: data, encoding: String.Encoding.utf8) {
                  print(contents)
              }
  
          }
  
          task.resume()
  
      }
  
      func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
  
          guard
              challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust,
              let serverTrust = challenge.protectionSpace.serverTrust,
              SecTrustEvaluate(serverTrust, nil) == errSecSuccess,
              let serverCert = SecTrustGetCertificateAtIndex(serverTrust, 0) else {
  
                  reject(with: completionHandler)
                  return
          }
  
          let serverCertData = SecCertificateCopyData(serverCert) as Data
  
          guard
              let localCertPath = Bundle.main.path(forResource: "wwwgooglecom", ofType: "crt"),
              let localCertData = NSData(contentsOfFile: localCertPath) as Data?,
  
              localCertData == serverCertData else {
  
                  reject(with: completionHandler)
                  return
          }
  
          accept(with: serverTrust, completionHandler)
  
      }
  
      func reject(with completionHandler: ((URLSession.AuthChallengeDisposition, URLCredential?) -> Void)) {
          completionHandler(.cancelAuthenticationChallenge, nil)
      }
  
      func accept(with serverTrust: SecTrust, _ completionHandler: ((URLSession.AuthChallengeDisposition, URLCredential?) -> Void)) {
          completionHandler(.useCredential, URLCredential(trust: serverTrust))
      }
  
  }
  

  ---

  Why the the errors are seen in the later two requests ?

  While sending email using SendGrid API, mail isn't being sent, as SSL Pinning is failing. I am not sure where I am going wrong. If I don't go for SSL Pinning, everything works as expected. Any one faced the same problem before?
• Could not create SSL/TLS secure channel using webApplication deployed on IIS

  I have added Client certificate in UAT machine (Testing Server). I am facing issue on IIS server , my desktop test app and SoapUI tool receive response successfully but when i deployed my web application on IIS server it causes exception that "Could not create SSL/TLS secure channel". i added certificate in Trusted Root Certification Authorities. and in my code i get this by

      ServicePointManager.ServerCertificateValidationCallback = new 
      RemoteCertificateValidationCallback(delegate { return true; });
      X509Certificates.X509Store store = new 
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      "60 0c 63 d0 54 6f 80 21 de 10 5e 9f bd 5a 8d 78 1f 9f 6c 62", false)[0];
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• Dask Client can't connect to dask-scheduler

  I'm on dask 1.1.1 (latest version) and I have started a dask scheduler at the commandline with this command:

  $ dask-scheduler --port 9796 --bokeh-port 9797 --bokeh-prefix my_project
  distributed.scheduler - INFO - -----------------------------------------------
  distributed.scheduler - INFO - Clear task state
  distributed.scheduler - INFO -   Scheduler at:     tcp://10.1.0.107:9796
  distributed.scheduler - INFO -       bokeh at:                     :9797
  distributed.scheduler - INFO - Local Directory:    /tmp/scheduler-pdnwslep
  distributed.scheduler - INFO - -----------------------------------------------
  distributed.scheduler - INFO - Register tcp://10.1.25.4:36310
  distributed.scheduler - INFO - Starting worker compute stream, tcp://10.1.25.4:36310
  distributed.core - INFO - Starting established connection
  

  then... I tried to start up a client to connect to the scheduler using this code:

  from dask.distributed import Client
  c = Client('10.1.0.107:9796', set_as_default=False)
  

  but upon trying to do that, I get an error:

  ...
   File "/root/anaconda3/lib/python3.7/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
   File "<string>", line 4, in raise_exc_info
   tornado.gen.TimeoutError: Timeout
  During handling of the above exception, another exception occurred:
  ...
   File "/root/anaconda3/lib/python3.7/site-packages/distributed/comm/core.py", line 195, in _raise
  raise IOError(msg)
  OSError: Timed out trying to connect to 'tcp://10.1.0.107:9796' after 10 s: connect() didn't finish in time
  

  This has been hardcoded in a system that's been running for months now. So I'm just writing this question to verify I'm not doing anything wrong programmatically right? I think it must be something wrong with the environment. Does everything look right to you? what kind of things could be stopping this outside of dask and python? certificates? differing versions of packages? thoughts