request-closed

Middleware that detects when the incoming HTTP request was closed prematurely and sets a property indicating as much.

request-closed is designed to be used as middleware within a Node.js web application. It has been tested with Express, but may also work with other frameworks. If you test this with another framework and find it to work, let me know and I'll update the docs.

This library is useful for times when you want to statically check the state of the request before performing some action (e.g. updating a database). If you need an event driven model, the req.on('close', function() { ... }) event handler will suit your needs better.

Set up

request-closed should be placed before any route definitions.

var express = require('express');
var requestClosed = require('request-closed');

var app = express();
...
app.use(requestClosed());

Usage

Once the middleware is in place, it will add a boolean isClosed property to the request object. This property will evaluate to false initially, and will flip to true if the request is closed before a response is sent.

if (req.isClosed) {
    // throw an exception, or take some alternate action
}