184 lines
4.7 KiB
Markdown
184 lines
4.7 KiB
Markdown
# Vhost Middleware
|
|
|
|
Forked from https://github.com/expressjs/vhost/ which appears abandoned.
|
|
|
|
## Install
|
|
|
|
`npm install @tryghost/vhost-middleware --save`
|
|
|
|
or
|
|
|
|
`yarn add @tryghost/vhost-middleware`
|
|
|
|
|
|
## API
|
|
|
|
<!-- eslint-disable no-unused-vars -->
|
|
|
|
```js
|
|
var vhost = require('vhost')
|
|
```
|
|
|
|
### vhost(hostname, handle)
|
|
|
|
Create a new middleware function to hand off request to `handle` when the incoming
|
|
host for the request matches `hostname`. The function is called as
|
|
`handle(req, res, next)`, like a standard middleware.
|
|
|
|
`hostname` can be a string or a RegExp object. When `hostname` is a string it can
|
|
contain `*` to match 1 or more characters in that section of the hostname. When
|
|
`hostname` is a RegExp, it will be forced to case-insensitive (since hostnames are)
|
|
and will be forced to match based on the start and end of the hostname.
|
|
|
|
When host is matched and the request is sent down to a vhost handler, the `req.vhost`
|
|
property will be populated with an object. This object will have numeric properties
|
|
corresponding to each wildcard (or capture group if RegExp object provided) and the
|
|
`hostname` that was matched.
|
|
|
|
Where the `hostname` of the request comes from depends on the type of server you're running.
|
|
If you're running a raw Node.js/connect server, this comes from [`req.headers.host`](https://nodejs.org/dist/latest/docs/api/http.html#http_message_headers).
|
|
If you're running an express v4 server, this comes from [`req.hostname`](http://expressjs.com/en/4x/api.html#req.hostname).
|
|
|
|
```js
|
|
var connect = require('connect')
|
|
var vhost = require('vhost')
|
|
var app = connect()
|
|
|
|
app.use(vhost('*.*.example.com', function handle (req, res, next) {
|
|
// for match of "foo.bar.example.com:8080" against "*.*.example.com":
|
|
console.dir(req.vhost.host) // => 'foo.bar.example.com:8080'
|
|
console.dir(req.vhost.hostname) // => 'foo.bar.example.com'
|
|
console.dir(req.vhost.length) // => 2
|
|
console.dir(req.vhost[0]) // => 'foo'
|
|
console.dir(req.vhost[1]) // => 'bar'
|
|
}))
|
|
```
|
|
|
|
## Examples
|
|
|
|
### using with connect for static serving
|
|
|
|
```js
|
|
var connect = require('connect')
|
|
var serveStatic = require('serve-static')
|
|
var vhost = require('vhost')
|
|
|
|
var mailapp = connect()
|
|
|
|
// add middlewares to mailapp for mail.example.com
|
|
|
|
// create app to serve static files on subdomain
|
|
var staticapp = connect()
|
|
staticapp.use(serveStatic('public'))
|
|
|
|
// create main app
|
|
var app = connect()
|
|
|
|
// add vhost routing to main app for mail
|
|
app.use(vhost('mail.example.com', mailapp))
|
|
|
|
// route static assets for "assets-*" subdomain to get
|
|
// around max host connections limit on browsers
|
|
app.use(vhost('assets-*.example.com', staticapp))
|
|
|
|
// add middlewares and main usage to app
|
|
|
|
app.listen(3000)
|
|
```
|
|
|
|
### using with connect for user subdomains
|
|
|
|
```js
|
|
var connect = require('connect')
|
|
var serveStatic = require('serve-static')
|
|
var vhost = require('vhost')
|
|
|
|
var mainapp = connect()
|
|
|
|
// add middlewares to mainapp for the main web site
|
|
|
|
// create app that will server user content from public/{username}/
|
|
var userapp = connect()
|
|
|
|
userapp.use(function (req, res, next) {
|
|
var username = req.vhost[0] // username is the "*"
|
|
|
|
// pretend request was for /{username}/* for file serving
|
|
req.originalUrl = req.url
|
|
req.url = '/' + username + req.url
|
|
|
|
next()
|
|
})
|
|
userapp.use(serveStatic('public'))
|
|
|
|
// create main app
|
|
var app = connect()
|
|
|
|
// add vhost routing for main app
|
|
app.use(vhost('userpages.local', mainapp))
|
|
app.use(vhost('www.userpages.local', mainapp))
|
|
|
|
// listen on all subdomains for user pages
|
|
app.use(vhost('*.userpages.local', userapp))
|
|
|
|
app.listen(3000)
|
|
```
|
|
|
|
### using with any generic request handler
|
|
|
|
```js
|
|
var connect = require('connect')
|
|
var http = require('http')
|
|
var vhost = require('vhost')
|
|
|
|
// create main app
|
|
var app = connect()
|
|
|
|
app.use(vhost('mail.example.com', function (req, res) {
|
|
// handle req + res belonging to mail.example.com
|
|
res.setHeader('Content-Type', 'text/plain')
|
|
res.end('hello from mail!')
|
|
}))
|
|
|
|
// an external api server in any framework
|
|
var httpServer = http.createServer(function (req, res) {
|
|
res.setHeader('Content-Type', 'text/plain')
|
|
res.end('hello from the api!')
|
|
})
|
|
|
|
app.use(vhost('api.example.com', function (req, res) {
|
|
// handle req + res belonging to api.example.com
|
|
// pass the request to a standard Node.js HTTP server
|
|
httpServer.emit('request', req, res)
|
|
}))
|
|
|
|
app.listen(3000)
|
|
```
|
|
|
|
|
|
## Develop
|
|
|
|
This is a mono repository, managed with [lerna](https://lernajs.io/).
|
|
|
|
Follow the instructions for the top-level repo.
|
|
1. `git clone` this repo & `cd` into it as usual
|
|
2. Run `yarn` to install top-level dependencies.
|
|
|
|
|
|
## Run
|
|
|
|
- `yarn dev`
|
|
|
|
|
|
## Test
|
|
|
|
- `yarn lint` run just eslint
|
|
- `yarn test` run lint and tests
|
|
|
|
|
|
|
|
|
|
# Copyright & License
|
|
|
|
Copyright (c) 2013-2022 Ghost Foundation - Released under the [MIT license](LICENSE).
|