在 iOS WKWebView 中保留“Referer”标头？

Question

我在 WKWebView 中传递自定义标题。但是在重定向标头上会更新为新标头。 例如，我在浏览器中输入了“MyName”，现在打印语句Referer 已更改“Referer”，它将打开搜索结果：“https://www.google.com/” 如何在重定向中保留自定义标头。

在 WKWebView, decidePolicyFor navigationAction: WKNavigationAction 中，函数头在重定向时得到更新。

navigationAction.request.setValue("/App/app/iOS", forHTTPHeaderField: "Referer")这不行

import WebKit

class WKWEBViewController: UIViewController, WKNavigationDelegate {
    
    private var wkWebView: WKWebView!
    var loadURLString = "https://www.google.com"
    
    var customHeaders:[String:String] = ["Referer":"/AppleApp/app/iOS"]
    
    override func viewDidLoad() {
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(true)
        loadURL()
    }
    
    private func loadURL() {
        let config = WKWebViewConfiguration()
        wkWebView = WKWebView(frame: UIScreen.main.bounds, configuration: config)
        wkWebView.navigationDelegate = self
        wkWebView.backgroundColor = .white
        wkWebView.scrollView.backgroundColor = .white
        view.backgroundColor = .white
        view.addSubview(wkWebView)
        
        if let pdfurl = URL(string: loadURLString) {
            var urlRequest = URLRequest(url: pdfurl)
            if customHeaders.count != 0 {
                for obj in customHeaders {
                    urlRequest.addValue(obj.value, forHTTPHeaderField: obj.key)
                }
            }
            wkWebView.load(urlRequest)
        }
    }
}

extension WKWEBViewController {
    
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        let request = navigationAction.request
        print("URl--->", request.url)
        if let headers = request.allHTTPHeaderFields {
            print("Headers: \(headers)")
        } else {
            print("Nope, sir")
        }
        decisionHandler(.allow)
    }
}

Answer 1

喜欢下面的？

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    // MARK: - IBOutlet
    @IBOutlet weak var webView: WKWebView!
    
    
    // MARK: - Life cycle
    override func viewDidLoad() {
        super.viewDidLoad()
        webView.navigationDelegate = self
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        
        let urlStr = "https://www.google.com/"
        if let url = URL(string: urlStr) {
            let request = URLRequest(url: url)
            webView.load(request)
        }
    }
    
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        var request = navigationAction.request
        if let host = navigationAction.request.url?.host {
            if host == "www.google.com" {
                request.setValue("https://www.google.com/", forHTTPHeaderField: "Referer")
                if let headers = request.allHTTPHeaderFields {
                    print("Google Headers: \(headers)")
                }
            }
        }
        decisionHandler(.allow)
    }
}

以下是结果

Google 标头：[“Referer”：“https://www.google.com/”、“User-Agent”： “Mozilla/5.0（iPhone；CPU iPhone OS 14_4 像 Mac OS X） AppleWebKit/605.1.15（KHTML，如 Gecko）”、“接受”： "text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8"]