XCode iOS WebKit WebView

ViewController.swift

//
//  ViewController.swift
//  SuperApp-iOS
//
//  Created by Stepan Kuzmin on 05/08/2019.
//  Copyright © 2019 Stepan Kuzmin. All rights reserved.
//

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {

    @IBOutlet weak var webView: WKWebView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        webView.navigationDelegate = self
        
        let url = URL(string: "http://localhost:3000")
        webView.load(URLRequest(url: url!))
    }
    
    // trust self-signed certificates
    func webView(_ webView: WKWebView, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
        let cred = URLCredential(trust: challenge.protectionSpace.serverTrust!)
        completionHandler(.useCredential, cred)
    }
}