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我尝试使用加密的 m3u8 实现 Apple FairPlay。我从 Apple Developer 获得了示例文件（下面的链接）并将其放入我的服务器。

Apple 开发者测试流

这是我的代码：

- (void)loadPlayerView
{
    NSURL *url = [NSURL URLWithString:@"https://nyoba.innoplayer.co/cdn/videos/fairplay/muxed/encrypted/prog_index.m3u8"];
    
    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil];
    [asset.resourceLoader setDelegate:self queue:dispatch_get_main_queue()];
    
    AVPlayer *player = [[AVPlayer alloc] initWithPlayerItem:[AVPlayerItem playerItemWithAsset:asset]];
    
    AVPlayerViewController *controller = [[AVPlayerViewController alloc] init];
    controller.player = player;
    [self presentViewController:controller animated:YES completion:nil];
}

我已经实现AVAssetResourceLoaderDelegate，在设备中运行它并调用了这个方法。

- (BOOL)resourceLoader:(AVAssetResourceLoader *)resourceLoader shouldWaitForLoadingOfRequestedResource:(AVAssetResourceLoadingRequest *)loadingRequest
{
    NSString *keyURL = @"https://nyoba.innoplayer.co/cdn/videos/fairplay/muxed/encrypted/Key.txt";
    NSURL *urlx = [NSURL URLWithString:keyURL];
    
    NSMutableURLRequest *urlRequest = [[NSMutableURLRequest alloc] initWithURL:urlx];
    [urlRequest setTimeoutInterval:20];
    [urlRequest setHTTPMethod:@"GET"];
    
    NSURLSessionDataTask *task = [[NSURLSession sharedSession] dataTaskWithRequest:urlRequest completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        
        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
        NSLog(@"requestHLSKeyWithURL httpResponse ==== %ld", (long)httpResponse.statusCode);
        
        if (data != nil && (httpResponse.statusCode == 200 || httpResponse.statusCode == 100))
        {
            NSLog(@"requestHLSKeyWithURL data ==== %@", data);
            [[loadingRequest contentInformationRequest] setContentType:AVStreamingKeyDeliveryPersistentContentKeyType];
            [[loadingRequest contentInformationRequest] setByteRangeAccessSupported:YES];
            [[loadingRequest contentInformationRequest] setContentLength:[data length]];
            [[loadingRequest dataRequest] respondWithData:data];
            [loadingRequest finishLoading];
        }
        else
        {
            NSLog(@"requestHLSKeyWithURL ==== NOT OK");
            [loadingRequest finishLoading];
        }
        
    }];
    
    [task resume];
    
    return YES;
}

问题是，当委托的方法被调用并且我试图[[loadingRequest dataRequest] respondWithData:data];. 它什么也没发生，也没有显示任何东西。

有人可以帮我解决这个问题吗？

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