Support IPv6 (for `--open`)

[ferrybig]

• Operating System: Windows 10 64 bit
• Node Version: v9.2.0
• NPM Version: 5.5.1
• webpack Version: ^3.9.1
• webpack-dev-server Version: ^2.9.5

• This is a bug
• This is a feature request
• This is a modification request

Code

//package.json
{
  "name": "test projec",
  "version": "1.0.0",
  "keywords": [  ],
  "author": "Fernando van Loenhout",
  "dependencies": {  },
  "directories": {
    "test": "test"
  },
  "devDependencies": {
    "webpack": "^3.9.1",
    "webpack-dev-server": "^2.9.5"
  },
  "scripts": {
    "dev": "webpack-dev-server --progress --colors --hot --content-base dist/ --open --config ./webpack.config.js --inline --watch --host :: --disableHostCheck",
  },
}

Expected Behavior

Webpack dev server starts, hosts server on all ip addresses (because of ::), then opens localhost to view the website

Actual Behavior

Webpack dev server starts http://[::]:8080/ in browser what is an invalid ip, what goes against the examples shown here: CLI: Host and Port Options

For Bugs; How can we reproduce the behavior?

Start the dev server using --host :: and --open

[shellscape]

@ferrybig thanks for reporting the issue.

Webpack dev server starts http://[::]:8080/ in browser what is an invalid ip, what goes against the examples shown here: CLI: Host and Port Options

I'm struggling a little to understand the English here. Can you try to rephrase?

[alexander-akait]

@ferrybig it is mean - allow to start server on IPv6, but valid use [::]?

Use 0.0.0.0 to start on all IPs

[ferrybig]

@shellscape

1. I run webpack-dev-server --host :: --open from the terminal
2. Since --open is passed, it will open my webbrowser
3. The url opened in the webbrowser is [::]:8080
4. The browser complains that [::] is not a valid ip address

I expect that the localhost ip address of [::] is opened, similar to what happens when you use 0.0.0.0, for IPv6, the equivalent is [::1].

@evilebottnawi I need support for connecting over ipv6, if I start the server with 0.0.0.0, I cannot connect to my server from my other device using its ip

[shellscape]

@ferrybig my experience with IPv6 is very limited and I'm afraid we're going to need a PR to resolve this one.

[alexander-akait]

The browser complains that [::] is not a valid ip address
Wrong, it is valid (try to open http://[::]:8080/)

Note:

• Using ::1 means use localhost only for IPv6
• Using :: mean use all available interfaces (include IPv6)

opn (open) package works find with IPv4 and IPv6 so i am closing this issue