如何在Xcode Playground上使用Charles Proxy？

import Foundation

let proxyHost = "your_charles_proxy_ip"
let proxyPort = 8888

let sessionConfiguration = URLSessionConfiguration.default
sessionConfiguration.connectionProxyDictionary = [
    kCFNetworkProxiesHTTPEnable: true,
    kCFNetworkProxiesHTTPProxy: proxyHost,
    kCFNetworkProxiesHTTPPort: proxyPort,
    kCFNetworkProxiesHTTPSEnable: true,
    kCFNetworkProxiesHTTPSProxy: proxyHost,
    kCFNetworkProxiesHTTPSPort: proxyPort
]

let session = URLSession(configuration: sessionConfiguration)

let url = URL(string: "https://www.example.com")!
let task = session.dataTask(with: url) { (data, response, error) in
    if let error = error {
        print("Error: \(error)")
        return
    }
    
    if let data = data {
        let responseString = String(data: data, encoding: .utf8)
        print("Response: \(responseString ?? "")")
    }
}

task.resume()