A workaround to enable SSL Proxying on iOS Swift Playground for Charles and Proxyman app. (swift 5)

proxyman_iOS_playground.swift

// This workaround is only for iOS Swift Playground
// Don't need it on macOS Playground
import Foundation

// Accept all challenges from Charles or Proxyman for self-signed certificates
class NetworkSSlProxying: NSObject, URLSessionDelegate {
    func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
        completionHandler(.useCredential, URLCredential(trust: challenge.protectionSpace.serverTrust!))
    }
}

// Init session 
let delegate = NetworkSSlProxying()
let conf = URLSessionConfiguration.default
let session = URLSession(configuration: conf, delegate: delegate, delegateQueue: nil)

// Request
let url = URL(string: "https://google.com")!
let task = session.dataTask(with: url) { (data, response, error) in
    print(response)
}
task.resume()