Upgrade-Insecure-Requests

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.

Upgrade-Insecure-Requests 是一个请求首部,用来向服务器端发送信号,表示客户端优先选择加密及带有身份验证的响应,并且它可以成功处理 upgrade-insecure-requests CSP 指令。

Header type Request header
Forbidden header name no

语法

Upgrade-Insecure-Requests: 1

示例

客户端向服务器端发送信号表示它支持 upgrade-insecure-requests 的升级机制:

GET / HTTP/1.1
Host: example.com
Upgrade-Insecure-Requests: 1

服务器现在可以重定向到这个站点的安全版本。在响应中可以添加一个 Vary 首部,这样的话,响应就不会被缓存服务器提供给不支持升级机制的客户端了。

Location: https://example.com/
Vary: Upgrade-Insecure-Requests

规范

Specification
Upgrade Insecure Requests
# preference

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Upgrade-Insecure-Requests

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

参见