express-extractheaders

    4.0.0 • Public • Published

    express-extractheaders

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    Express middleware that allows you to specify your HTTP response headers inside the <head> of your HTML as <meta http-equiv="..." content="..."> tags. The primary use case is static HTML, but the middleware works no matter what's actually generating the response body, so it'll also work with template engines, http proxies etc.

    Usage

    require('express')()
      .use(require('express-extractheaders')(options))
      .use(express.static('/path/to/static/files/'));

    Example:

    require('express')()
      .use(require('express-extractheaders')())
      .use(function (req, res, next) {
        res.end(
          '<html>' +
            '<head>' +
            '<meta http-equiv="X-Frame-Options" content="SAMEORIGIN">' +
            '</head>' +
            '<body>foo</body>' +
            '</html>'
        );
      })
      .listen(1337);
    $ curl --dump-header - localhost:1337
    HTTP/1.1 200 OK
    X-Powered-By: Express
    Content-Type: text/html; charset=utf-8
    Content-Length: 98
    X-Frame-Options: SAMEORIGIN
    Date: Sun, 27 Jul 2014 12:16:51 GMT
    Connection: keep-alive
    
    <html><head><meta http-equiv="X-Frame-Options" content="SAMEORIGIN"></head><body>foo</body></html>
    

    Installation

    npm install express-extractheaders
    

    Options

    memoize: Only extract the response headers once per url. You will probably want to use this option in production as there's a performance hit to parsing all the outgoing HTML.

    Security considerations

    Only use this when you trust the downstream middleware. If you proxy to an untrusted host, it will gain the ability to set response headers on the behalf of your server.

    Releases

    Changelog

    License

    express-extractheaders is licensed under a standard 3-clause BSD license -- see the LICENSE file for details.

    Install

    npm i express-extractheaders

    DownloadsWeekly Downloads

    111

    Version

    4.0.0

    License

    BSD-3-Clause

    Unpacked Size

    63.3 kB

    Total Files

    17

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