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setheader

Protect headers from being overridden before they are written to response.

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setHeader

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This module is an alternate way of setting headers in your node applications. Node doesn't have any protection or ways to prevent your previously set headers from being overridden. So just because you set a X-Powered-By or X-Frame-Options header it doesn't mean that this exact header will eventually be written to the response. It could be that you have a middleware layer that silently modified the header. This module attempts to prevent that from happening by making the set property readOnly.

Installation

npm install --save setheader

Usage

The following snippet should make it clear:

'use strict';

var setHeader = require('setheader');

//
// Create a basic http server just to illustrate the example usage here..
//
require('http').createServer(function (req, res) {
  setHeader(res, 'X-Frame-Options', 'DENY');

  res.end('(\/)(;,,;)(\/)');
}).listen(8080);

As you can see in the example above the setHeader method receives 3 required arguments:

  1. res, The HTTP Response instance of your HTTP server server.
  2. name, The name of the header it needs to set.
  3. value, The value of the header that is set.

License

MIT

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Package last updated on 16 Sep 2019

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