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我按照视频教程的所有步骤使用 PHP 和 MySQL 实现 APNS 服务器，在最后一步中，我在数据库的“apns-message”表中获得了“失败”状态。

PD。每次我从 apns.php 执行 fetch 任务时，状态都会从排队变为失败。

我究竟做错了什么？

更新

    UIDevice *dev = [UIDevice currentDevice];
    NSString *deviceUuid;
    if ([dev respondsToSelector:@selector(uniqueIdentifier)])
        deviceUuid = dev.uniqueIdentifier;
    else {
        NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
        id uuid = [defaults objectForKey:@"deviceUuid"];
        if (uuid)
            deviceUuid = (NSString *)uuid;
        else {
            CFStringRef cfUuid = CFUUIDCreateString(NULL, CFUUIDCreate(NULL));
            deviceUuid = (__bridge_transfer NSString *)cfUuid;
            CFRelease(cfUuid);
            [defaults setObject:deviceUuid forKey:@"deviceUuid"];
        }
    }
    NSString *deviceName = dev.name;
    NSString *deviceModel = dev.model;
    NSString *deviceSystemVersion = dev.systemVersion;

    // Prepare the Device Token for Registration (remove spaces and < >)
    NSString *deviceToken = [[[[devToken description]
                               stringByReplacingOccurrencesOfString:@"<"withString:@""]
                              stringByReplacingOccurrencesOfString:@">" withString:@""]
                             stringByReplacingOccurrencesOfString: @" " withString: @""];

    NSString *host = @"www.mywebsite.com/apns";

    NSString *urlString = [NSString stringWithFormat:@"/apns.php?task=%@&appname=%@&appversion=%@&deviceuid=%@&devicetoken=%@&devicename=%@&devicemodel=%@&deviceversion=%@&pushbadge=%@&pushalert=%@&pushsound=%@", @"register", appName,appVersion, deviceUuid, deviceToken, deviceName, deviceModel, deviceSystemVersion, pushBadge, pushAlert, pushSound];

    NSURL *url = [[NSURL alloc] initWithScheme:@"http" host:host path:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
    NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    NSLog(@"Register URL: %@", url);
    NSLog(@"Return Data: %@", returnData);

唯一奇怪的步骤是当我尝试连接 Apple 服务器（沙盒和生产服务器）时......我收到以下反馈

Start Time: 1353239556
Timeout   : 300 (sec)
Verify return code: 20 (unable to get local issuer certificate)

希望你能帮我！

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