Whatsapp Web如何在iOS上运行? [英] How whatsapp web works on iOS?

问题描述

Whatsapp为iOS启用了whatsapp网站.我在ios上回顾了whatsapp网站，它运作良好，但是如何?我关闭了后台应用程序刷新，然后关闭了whatsapp应用程序.然后，我尝试使用whatsapp网站，效果很好.当我禁用iPhone的互联网连接时，whatsapp网站说您的电话连接断开了" whatsapp怎么知道这一点?即使关闭，WhatsApp在后台如何工作?

Whatsapp enabled whatsapp web for ios. I reviewed the whatsapp web on ios, it works well but how? I turned off background app refresh, then closed the whatsapp app. Then I tried to use whatsapp web and it worked well. When I disabled the internet connection of my iPhone, whatsapp web said "your phone connection lost" How whatsapp did know this? How whatsapp works in background even when it's closed?

推荐答案

即使在多任务屏幕上关闭WhatsApp时，其工作方式也很可能是利用iOS 8对新VoIP推送消息服务的支持.

Regarding how it works even when WhatsApp is closed from the multitasking screen, it is likely taking advantage of iOS 8's support for the new VoIP push messaging service.

https://developer.apple.com/library/prerelease/ios/documentation/Performance/Conceptual/EnergyGuide-iOS/OptimizeVoIP.html

请注意过去...如果用户退出VoIP应用程序，将不再能够接收来自服务器的呼叫"，但是如何使用新方法如果在VoIP推送时未运行您的应用程序将自动重新启动收到."

Note how "In the past ... if a user quit the VoIP app, calls from the server could no longer be received" but with the new method "Your app is automatically relaunched if it’s not running when a VoIP push is received."

WhatsApp现在在其应用程序中提供VoIP呼叫，因此它确实可以合法使用这些类型的推送消息.我不确定是否是否滥用VoIP推送消息特权来在后台启动该应用程序(不是用于通话，而是用于将消息同步到Web)，但这肯定是最有可能对其进行管理的解释

WhatsApp now offers VoIP calling in its app, so it does have legitimate use of these types of push messages. Whether it's considered an abuse of the VoIP push message privilege to start the app in the background, not for a call but to sync messages to the web, I'm unsure of, but this certainly seems the most likely explanation for how it manages it.

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