Silence socket hangup errors.

node-0.8.20-hangup.js

function hangups (req, res, next){
    var reqd = domain.create()
    reqd.add(req)
    reqd.add(res)
    reqd.on('error', function (error) {
        if (error.code !== 'ECONNRESET') console.error(error, req.url)
        reqd.dispose()
    })
    next()
}

app.use(hangups)

http://clock.co.uk/tech-blogs/preventing-http-raise-hangup-error-on-destroyed-socket-write-from-crashing-your-nodejs-server