koa-addpushheader

This middleware (generator function) will parse a response body for any local linked assets (CSS, images, etc) and add them to the response headers. Modern HTTP/2 reverse proxies like nghttpx parse this header and send out the required push promises to the client.

Usage

Use the library like this:

npm install --save koa-addpushheader

app.use(require('koa-addpushheader'));
// view handling code

Notes

The header added to the response looks like this:

link: </apple-icon-57x57.png>; rel=preload, ...

Currently the following file types are added: bmp, css, eot, gif, ico, jpg, jpeg, js, otf, png, svg, ttf, webm, webp, woff, woff2

For the complete spec on rel=preload see: http://w3c.github.io/preload/

License

This project is licensed as LGPLv3, the license file is included in the project directory.

Copyright 2015 Stefan Hamminga - prjct.net