Url重定向

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,
0), ^{

//取得重定向后的最终视频地址，防止类似 ku6
这样的网站，跳转链接报错资源失效。
NSMutableURLRequest *request = [NSMutableURLRequest
requestWithURL:[NSURL
URLWithString:self.url]
cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:15.0];
[request setHTTPMethod:@"HEAD"];
NSURLResponse *response =
nil;
[NSURLConnection
sendSynchronousRequest:request
returningResponse:&response error:nil];
NSURL *finalURL = response.URL;

dispatch_async(dispatch_get_main_queue(), ^{

_cyberPlayerController.contentURL = finalURL;
[_cyberPlayerController
play];

});

});