禁止对飞行前403的响应 [英] Response for preflight 403 forbidden

问题描述

我一直在尝试向服务器发布一个简单的iron-ajax帖子，但是在预检调用中一直失败.对于我一生，我不知道发生了什么，服务器上的所有CORS标头似乎都是正确的.

Response headers

Access-Control-Allow-Credentials:true
Access-Control-Allow-Headers:Content-Type
Access-Control-Allow-Methods:GET, POST, PUT, OPTIONS
Access-Control-Allow-Origin:*
cache-control:must-revalidate, private, no-cache, no-store, max-age=0
Connection:Keep-Alive
Content-Encoding:gzip
Content-Length:138
Content-Type:text/html

Request headers

Accept:*/*
Accept-Encoding:gzip, deflate, sdch, br
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:content-type
Access-Control-Request-Method:POST
Cache-Control:no-cache
Connection:keep-alive

该请求确实是从本地主机发出的，但我本以为*应该解决这个问题.

控制台中显示的错误是: OPTIONS https://... 403 (Forbidden)和

XMLHttpRequest cannot load https://.... Response for preflight has invalid HTTP status code 403

感谢任何帮助/建议.

解决方案

403响应状态表示服务器后端未配置为处理OPTIONS请求，而不仅仅是CORS预检OPTIONS请求. >

服务器必须以2xx成功状态(通常为200或204)响应OPTIONS请求.

如果服务器不这样做，则配置为发送的Access-Control-*标头没有区别.配置服务器以正确方式处理OPTIONS请求(发送200或204成功消息)的答案取决于其运行的服务器软件

I've been trying to make a simple iron-ajax post to the server, but it keeps failing at the preflight call. For the life of me I can't figure out what's going on, all the CORS headers seem to be correct on the server.

Response headers

Access-Control-Allow-Credentials:true
Access-Control-Allow-Headers:Content-Type
Access-Control-Allow-Methods:GET, POST, PUT, OPTIONS
Access-Control-Allow-Origin:*
cache-control:must-revalidate, private, no-cache, no-store, max-age=0
Connection:Keep-Alive
Content-Encoding:gzip
Content-Length:138
Content-Type:text/html

Request headers

Accept:*/*
Accept-Encoding:gzip, deflate, sdch, br
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:content-type
Access-Control-Request-Method:POST
Cache-Control:no-cache
Connection:keep-alive

The request is indeed made from localhost, but I would have thought that the * should take care of that.

Errors that are showing up in the console are: OPTIONS https://... 403 (Forbidden) and

XMLHttpRequest cannot load https://.... Response for preflight has invalid HTTP status code 403

Any help/advice is appreciated.

解决方案

The 403 response status indicates a general problem with the server backend not being configured to handle OPTIONS requests, not just CORS preflight OPTIONS requests.

The server must respond to OPTIONS requests with a 2xx success status—typically 200 or 204.

If the server doesn’t do that, it makes no difference what Access-Control-* headers you have it configured to send. And the answer to configuring the server to handle OPTIONS requests in the right way—to send a 200 or 204 success message—depends on what server software it’s running

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