req is not readable after middleware used

Question

req is not readable after middleware used

I'm attempting to secure an API endpoint of mine with passport running on node.js version 0.8.2. The controller function I have looks something like this:

exports.create = function(req, res) {
    console.log('Request readable? ' + req.readable);

    ... stream blob in req to create blob ...
};

This works great when there is no middleware to authenticate the incoming request and "Request readable? true" is printed to the console.

When I introduce the middleware to authenticate the incoming request, the req is not readable any longer in my controller.

What am I doing wrong?

node.js
express
passport.js

Answer 1

What was happening in this case is that I was making a call to fetch the accessToken from the database asynchronously and in this gap the stream when unreadable:

// req.readable == true here

auth(req, res, function(err) {
    // req.readable == false here

What you need to do in this situation is pause and resume the request stream:

// req.readable == true here

req.pause();
auth(req, res, function(err) {
    req.resume();
    // req.readable == true here