如何使用WKURLSchemeHandler服务大文件？

import WebKit

class FileSchemeHandler: NSObject, WKURLSchemeHandler {
    func canHandle(_ task: WKURLSchemeTask) -> Bool {
        guard let url = task.request.url else { return false }
        return url.scheme == "file"
    }
    
    func handle(_ task: WKURLSchemeTask) {
        guard let url = task.request.url else {
            task.didFailWithError(NSError(domain: "YourErrorDomain", code: -1, userInfo: nil))
            return
        }
        
        do {
            let data = try Data(contentsOf: url)
            let response = URLResponse(url: url, mimeType: "application/octet-stream", expectedContentLength: data.count, textEncodingName: nil)
            task.didReceive(response)
            task.didReceive(data)
            task.didFinish()
        } catch {
            task.didFailWithError(error)
        }
    }
}

import WebKit

class ViewController: UIViewController {
    var webView: WKWebView!

    override func viewDidLoad() {
        super.viewDidLoad()

        let configuration = WKWebViewConfiguration()
        configuration.setURLSchemeHandler(FileSchemeHandler(), forURLScheme: "file")
        
        webView = WKWebView(frame: view.bounds, configuration: configuration)
        view.addSubview(webView)
        
        if let fileURL = Bundle.main.url(forResource: "largeFile", withExtension: "mp4") {
            let request = URLRequest(url: fileURL)
            webView.load(request)
        }
    }
}