单击图像时，如何发送 "origin" 作为 favicon.ico 文件的引荐来源网址？

Question

我有一个简单的图片预览，点击后会显示全尺寸图片：

<html>
  <head>
    <meta name="referrer" content="origin">
  </head>
  <body>
    <a href="/myimage.jpg">
      <img src="/myimage.jpg" title="my image" border="0" />
    </a>
  </body>
</html>

问题：浏览器除了请求图片外，还会请求favicon.ico。图像的请求 headers 是：Referer: https://example.com/（如预期）。但是，对于 favicon.ico 文件的请求，此 header 是引用页面的完整 url：Referer: https://example.com/where-I-was.

如何将 favicon.ico 请求的 Referer header 设置为简单的来源？我不希望它在我的 nginx 日志中显示完整的 url。谢谢！

Answer 1

选项 1

在 link 标签上使用 referrerpolicy HTML 属性 - see docs on MDN.

<a href="/myimage.jpg" referrerpolicy="origin">

选项 2

使用webRequest API重写Referer header - see the MDN page on it here. Simply set the header to whatever you want it to be - seems like you might be interested in the window.location object.

示例代码 - 修改自 MDN page:

var targetURL = "http://example.com/favicon.ico";

var protocol = window.location.protocol;
var hostname = window.location.hostname;
var port = window.location.port;

var origin = protocol + '//' + hostname + (port ? ':' + port : '');

function rewriteUserAgentHeader(e) {
  e.requestHeaders.forEach(function(header){
    if (header.name.toLowerCase() == "referer") {
      header.value = origin;
    }
  });
  return {requestHeaders: e.requestHeaders};
}

browser.webRequest.onBeforeSendHeaders.addListener(
  rewriteUserAgentHeader,
  {urls: [targetURL]},
  ["blocking", "requestHeaders"]
);

单击图像时，如何发送 "origin" 作为 favicon.ico 文件的引荐来源网址？

How do I send "origin" as the referrer for the favicon.ico file when clicking on an image?

http

nginx

header

refer