chai-http write after end

Question

I have a server-app that receives an audio stream from the client. I am trying to test the app using chai/chai-http, but it gives me this error:

[Error: write after end]

What's the problem?

Code:

var chai = require('chai');
var chaiHttp = require('chai-http');
var server = require('../server-app');
var should = chai.should();
var fs = require('fs');

chai.use(chaiHttp);


describe('server', function() {
  it('should work..', function (done){
    var req = chai.request(server).post('/speech');
    fs.createReadStream('./test.wav').pipe(req);
    req.end(function (err,res){
        console.log(err);//outputs: [Error: write after end]
        done();
    });
  });
});

Answer 1

You're calling req.end before the stream finishes pushing data to the request.

I would do the following:

var readstream = fs.createReadStream('./test.wav');
readstream.pipe(req);

readstream.on('close', someFunction);
readstream.on('end', someFunction);

and call req.end in the close or end events for the stream. You're calling req.end before either of those events are emitted.