Port is not being removed from URI in some cases

[zfletch]

The following test in uri_header_test.exs fails:

test "it removes the port part of the uri" do
  value = []
          |> HeaderValues.wrap()
          |> UriHeader.headers("example.com:8000/foo/bar")
          |> HeaderValues.get(:uri)

  assert value == "/foo/bar"
end

[zfletch]

Note that the following test case succeeds:

test "it removes the port part of the uri" do
  value = []
          |> HeaderValues.wrap()
          |> UriHeader.headers("https://www.example.com:8000/foo/bar")
          |> HeaderValues.get(:uri)

  assert value == "/foo/bar"
end

Using the full URL (ie http://example.com instead of example.com) is a workaround. The issue stems from the way Elixir's URI library parses URLs. URI.parse("example.com:4000/foo") gives a path of "4000/foo" and a scheme of "example.com".