dredd: Error connecting to server under test when server on localhost

Describe your problem

Each test is failing with the following error:

error: Error connecting to server under test!

Despite the api endpoint is set to http://localhost:8000 , the api calls are sent to http://127.0.0.1:8000.

Running a web server on 127.0.0.1 instead of localhost solves the problem.

What command line options do you use?

$ dredd

What is in your dredd.yml?

reporter: apiary
custom:
  apiaryApiKey: *******
  apiaryApiName: ********
dry-run: null
hookfiles: './hooks.php'
language: 'bin/dredd-hooks-php'
sandbox: false
server:
server-wait: 3
init: false
names: false
only: []
output: []
header: []
sorted: false
user: null
inline-errors: false
details: false
method: []
color: true
level: info
timestamp: false
silent: false
path: []
hooks-worker-timeout: 5000
hooks-worker-connect-timeout: 1500
hooks-worker-connect-retry: 500
hooks-worker-after-connect-wait: 100
hooks-worker-term-timeout: 5000
hooks-worker-term-retry: 500
hooks-worker-handler-host: localhost
hooks-worker-handler-port: 61321
config: ./dredd.yml
blueprint: api.apib
endpoint: 'http://localhost:8000/api/v1'

What’s your dredd --version output?

dredd v2.2.5 (Darwin 15.6.0; x64)

Does dredd --level=debug uncover something?

debug: Evaluating results of transaction execution #1: Authorisation > Logout > Logout
debug: No emission of test data to reporters { Error: connect ECONNREFUSED 127.0.0.1:8000
    at Object.exports._errnoException (util.js:1028:11)
    at exports._exceptionWithHostPort (util.js:1051:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1090:14)

  code: 'ECONNREFUSED',
  errno: 'ECONNREFUSED',
  syscall: 'connect',
  address: '127.0.0.1',
  port: 8000 }