如何修复iOS 12 Safari Cors预检错误? [英] How to fix iOS 12 Safari Cors preflight error?

问题描述

由于我们的Web应用程序的多个用户抱怨，因为他们已升级到iOS 12，因此他们收到预检错误，因此我试图更好地理解COR.

I am trying to understand CORs a little better as several users of our web app are complaining since they upgraded to iOS 12 they are receiving preflight errors.

网络检查器的错误

[Error] Preflight response is not successful
[Error] Fetch API cannot load https://www.api.com due to access control checks.
[Error] Failed to load resource: Preflight response is not successful (v4, line 0)

客户端应用程序是带有Apollo的React应用程序.它使用Apache HTTPD和Express JS通过HTTPS调用服务器.

The client app is a React app with Apollo. It calls a server over HTTPS with Apache HTTPD and Express JS.

在所有其他浏览器上一切正常，这仅适用于iOS 12.

Everything works fine on all other browsers, this is isolated to iOS 12.

当我查看HTTPD访问日志时，奇怪的是，看不到任何预检呼叫.当我尝试直接击中服务器时(在iOS 12上)，我在日志中看到预检OPTIONS请求和POST.但是，当通过Web应用程序调用服务器时，CORs预检失败.

Whats weird is when I look through the HTTPD access logs, I can't see any preflight calls. When I try hit the server directly (on iOS 12), I see both the preflight OPTIONS request and POST in the logs. But when calling the server through the web app, the CORs preflight fails.

在快速应用中，我也注销了所有请求，但它也没有出现.

In the express app, I also logged out all requests, and it doesn't appear there either.

在HTTPD中，我具有

In HTTPD I have the settings of

Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS

在表达上，我也有同样的事情.

In express I have the same thing.

有什么想法吗?！

推荐答案

在过去的两天里，我一直在与这个完全相同的问题作斗争，现在才找到解决方案/答案.

I've been fighting with this exact same issue for the last two days and just now found the solution/answer.

这是iOSv12中的错误，但假设当前的Beta代码已投入生产，则它已在iOSv12.1 beta(16B5059d)中修复.

It's a bug in iOSv12, but it's already fixed in iOSv12.1 beta (16B5059d), assuming the current beta code makes it into production.

问题是iOSv12 WebKit预检OPTIONS调用不会离开设备.我已经运行WireShark和iOSv12模拟器来确认这一点.

The problem is that iOSv12 WebKit preflight OPTIONS calls don't leave the device. I've run WireShark and the iOSv12 simulator to confirm this.

长时间潜伏，我注册了一个帐户只是为了发布此答案.如果我在回答这个问题时违反了规则/礼节，对不起.

Long time lurker, I made an account just to post this answer. If I broke rules/etiquette with this answer, I'm sorry.

这篇关于如何修复iOS 12 Safari Cors预检错误?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！