WKWebView 使用NSURLProtocol或WKURLSchemeHandler 无法拦截网页包含csp链接

Question

问题遇到的现象和发生背景

在做WKWebView 重定向的时候需要拦截WKWebView，使用了NSURLProtocol或者WKURLSchemeHandler俩种方案都试过了但是都不能好好解决，目前使用WKURLSchemeHandler方案，在拦截https://mail.qq.com的时候不能做到很好的拦截？提示报的是csp相关报错。求解？

问题相关代码，请勿粘贴截图

• (void)load {
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{

    Method originalMethod1 = class_getClassMethod(self, @selector(handlesURLScheme:));
    Method swizzledMethod1 = class_getClassMethod(self, @selector(yyhandlesURLScheme:));
    method_exchangeImplementations(originalMethod1, swizzledMethod1);
  

  });
  }
• (BOOL)yyhandlesURLScheme:(NSString *)urlScheme {
  if ([urlScheme isEqualToString:@"http"] || [urlScheme isEqualToString:@"https"] || [urlScheme isEqualToString:@"file"]) {

    return NO;  //这里让返回NO,应该是默认不走系统断言或者其他判断啥的
  

  } else {

    return [self handlesURLScheme:urlScheme];
  

  }
  }

#pragma mark - WKURLSchemeHandler

• (void)webView:(WKWebView *)webView startURLSchemeTask:(id )urlSchemeTask
  {

    NSURLRequest *request = urlSchemeTask.request;
    NSURLRequest *httpRequest = [self httpRequest:request];
    NSString *mineType = [[self class] mimeTypeForData:httpRequest.HTTPBody];
    [self.hashTable addObject:urlSchemeTask];
    NSURLSessionDataTask *task = [self.session dataTaskWithRequest:httpRequest completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        if (![self.hashTable containsObject:urlSchemeTask]) {
            return ;
        }
        if (response) {
            [urlSchemeTask didReceiveResponse:response];
        }
        if (data) {
            [urlSchemeTask didReceiveData:data];
        }
        if (error) {
            [urlSchemeTask didFailWithError:error];
        } else {
            [urlSchemeTask didFinish];
        }
        [self.hashTable removeObject:urlSchemeTask];
    }];
    [task resume];
  

  }
• (void)webView:(WKWebView *)webView stopURLSchemeTask:(id )urlSchemeTask
  {
  [self.hashTable removeObject:urlSchemeTask];
  }

运行结果及报错内容

我的解答思路和尝试过的方法

#pragma mark - WKURLSchemeHandler

• (void)webView:(WKWebView *)webView startURLSchemeTask:(id )urlSchemeTask
  {

    NSURLRequest *request = urlSchemeTask.request;
    NSURLRequest *httpRequest = [self httpRequest:request];
    NSString *mineType = [[self class] mimeTypeForData:httpRequest.HTTPBody];
    [self.hashTable addObject:urlSchemeTask];
    NSURLSessionDataTask *task = [self.session dataTaskWithRequest:httpRequest completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        if (![self.hashTable containsObject:urlSchemeTask]) {
            return ;
        }
        if (response) {
            [urlSchemeTask didReceiveResponse:response];
        }
        if (data) {
            [urlSchemeTask didReceiveData:data];
        }
        if (error) {
            [urlSchemeTask didFailWithError:error];
        } else {
            [urlSchemeTask didFinish];
        }
        [self.hashTable removeObject:urlSchemeTask];
    }];
    [task resume];
  

  }

  我想要达到的结果

  拦截包含csp网页并成功请求网页

Answer 1

现在我的WKURLSchemeHandler 拦截一般的链接并成功请求网页没有问题，但是在拦截网页包含csp策略的时候拦截失效了