Fix: make port optional when parsing URL

[johnyb]

URL parsing is broken when port is not specified, as the URL is basically invalid in this case.

Fixes #153

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[Eomm]

Would you mind to add a test to cover this use case?

[johnyb]

Currently trying to figure out a way to reproduce this in a test. At least what doesn't work in my case works when trying in this test env. I tried this:

test('should parse path without a port specified', async (t) => {
  t.plan(2)
  const fastify = Fastify()
  fastify
    .register(plugin)

  fastify.get('/', (req, reply) => {
    const path = req.urlData('path')
    reply.send('That worked, path is ' + path)
  })

  const res = await fastify.inject({ url: '/' })
  t.equal(res.statusCode, 200)
  t.equal(res.body, 'That worked, path is /')
})

[johnyb]

Would you mind to add a test to cover this use case?

Done :D this basically also adds a workaround for my usecase: specify a port in the host header of the inject call. Took me this test to find out ;)

[mcollina]

lgtm

[dancastillo]

LGTM