express-content-length-validator

Make sure your application is not vulnerable to large payload attacks ``$ npm install express-content-length-validator --save`` Once you've gotten the content-length module: ```js

var contentLength = require('express-content-length-validator');

``` You'll have a single function to work with: ``validateMax``.

contentLength.validateMax(options)

``options`` is an object with three properties:

• ``max``, which defaults to 999;

• ``status``, which defaults to 400;

• ``message``, which defaults to "Invalid payload; too big.".

```js

var contentLength = require('express-content-length-validator');

var app = require('express')();

var MAX_CONTENT_LENGTH_ACCEPTED = 9999;

app.use(contentLength.validateMax({max: MAX_CONTENT_LENGTH_ACCEPTED, status: 400, message: "stop it!"})); // max size accepted for the content-length

// and then, when you're checking the routes

app

.post('/some/url/here', function(req, res)

{

/*all is good, the content-length is less than the expected

so you can keep with your business logic*/

});

app.listen(8080);

``` ```js

var contentLength = require('express-content-length-validator');

var app = require('express')();

var MAX_CONTENT_LENGTH_ACCEPTED = 9999;

app.post('/some/url/here', contentLength.validateMax({max: MAX_CONTENT_LENGTH_ACCEPTED, status: 400, message: "send a smaller json, will ya?"}), function(req, res)

{

/*all is good, the content-length is less than the expected

so you can keep with your business logic*/

});

app.listen(8080);

``` MIT