APN（苹果推送通知）有效载荷大小限制 [英] APN (Apple Push Notification) payload size limit

问题描述

在<一个href=\"https://developer.apple.com/library/IOs/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/ApplePushService.html\">official文档你可以找到的信息：

每个推送通知，包括有效载荷。该有效载荷包含
  关于系统应如何提醒用户以及任何信息
  自定义数据您提供的。允许的通知的最大尺寸
  有效载荷的 256字节;苹果推送通知服务拒绝任何
  通知，超过此限制。

Each push notification includes a payload. The payload contains information about how the system should alert the user as well as any custom data you provide. The maximum size allowed for a notification payload is 256 bytes; Apple Push Notification Service refuses any notification that exceeds this limit.

然而，在WWDC 14，我们可以看到这个截图：

However in WWDC 14 we can see this screenshot:

我不知道是否有关于推送通知的大小限制任何官方声明的苹果。我测试了它和较大的256个字节的作品，但文件说，它不应该。有人可以证实或否认远程通知的大小？

I wonder if there is any official Apple statement about the size limit of push notification. I tested it and larger that 256 bytes works, but documentation said it shouldn't. Can someone confirm or deny the size of remote notifications?

推荐答案

苹果已经更新的文档。为最大有效负载尺寸的2KB只供运行iOS 8. <一个设备href=\"https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/ApplePushService.html\">official DOC 说：

Apple has already updated the documentation. The 2KB for the maximum payload size is just for devices running iOS 8. The official doc says:

在iOS的8和更高版本，最大尺寸允许的通知
  有效载荷为2千字节;苹果推送通知服务拒绝任何
  通知，超过此限制。 （在此之前到iOS 8和OS X中，
  最大有效载荷大小为256字节）。

In iOS 8 and later, the maximum size allowed for a notification payload is 2 kilobytes; Apple Push Notification service refuses any notification that exceeds this limit. (Prior to iOS 8 and in OS X, the maximum payload size is 256 bytes.)

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