角：关闭窗口上用户注销 [英] Angular: user logoff on closing window

问题描述

我有一个角应用中，当用户登录，我设置了分贝他的状态为在线。
如果用户关闭浏览器，而不是执行菜单操作注销，我怎么可以更新他的脱机状态？
我试图用$ window.onbeforeunload事件并调用Web服务来注销用户。
在code运行，但似乎执行将被切断，由浏览器：该服务从来没有所谓的真正的

I have an angular application where, when a user logs in, I set his status to "online" on the db. If this user close the browser, instead of performing the menu action logout, how can I update his status to "offline"? I tried to use the "$window.onbeforeunload" event and call a web service to logout the user. The code runs but it seems that the execution would be "cut off" by the browser: the service is never called "really".

推荐答案

使用一个WebSocket连接或轮询和侦听关闭服务器/停止。

Use a WebSocket connection or polling, and listen for that to close/stop on the server.

作为@安东尼奥说，你可以不依赖于客户端上的一贯通知您，它的关闭。

As @António says, you cannot rely on the client to consistently notify you that it's closing.

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