vhost

Install安装

$ npm install vhost

API

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.~~ 创建一个新的中间件函数，当请求的传入主机与hostname匹配时，将请求转交给handle。~~The function is called as handle(req, res, next), like a standard middleware.~~以handle(req, res, next)的形式调用该函数，类似于标准中间件。

~~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.~~ hostname可以是字符串或RegExp对象。当hostname是一个字符串时，它可以包含*，以匹配主机名的该部分中的1个或多个字符。~~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.~~当hostname是RegExp时，它将被迫不区分大小写（因为主机名是不区分大小写的），并将被迫根据主机名的开始和结束进行匹配。

~~When host is matched and the request is sent down to a vhost handler, the req.vhost property will be populated with an object.~~ 当主机匹配并且请求被发送到vhost处理程序时，req.vhost属性将填充一个对象。~~This object will have numeric properties corresponding to each wildcard (or capture group if RegExp object provided) and the hostname that was matched.~~此对象将具有与每个通配符（如果提供RegExp对象，则为捕获组）和匹配的hostname相对应的数字属性。

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":对于"foo.bar.example.com:8080"与"*.*.example.com"的匹配：
  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示例

using with connect for static serving使用with connect进行静态服务

var connect = require('connect')
var serveStatic = require('serve-static')
var vhost = require('vhost')

var mailapp = connect()

// add middlewares to mailapp for mail.example.com为mail.example.com向mailapp添加中间件

// create app to serve static files on subdomain创建应用程序以在子域上提供静态文件
var staticapp = connect()
staticapp.use(serveStatic('public'))

// create main app创建主应用程序
var app = connect()

// add vhost routing to main app for mail将vhost路由添加到邮件的主应用程序
app.use(vhost('mail.example.com', mailapp))

// route static assets for "assets-*" subdomain to get路由"assets-*"子域的静态资产以获取
// around max host connections limit on browsers浏览器上的最大主机连接限制
app.use(vhost('assets-*.example.com', staticapp))

// add middlewares and main usage to app向应用程序添加中间件和主要用途

app.listen(3000)

using with connect for user subdomains与connect一起使用用户子域

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将中间件添加到主网站的mainapp

// create app that will server user content from public/{username}/创建将从public/{username}/服务器提供用户内容的应用程序/
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假装请求是针对文件服务的/{username}/*
  req.originalUrl = req.url
  req.url = '/' + username + req.url

  next()
})
userapp.use(serveStatic('public'))

// create main app创建主应用程序
var app = connect()

// add vhost routing for main app为主应用程序添加vhost路由
app.use(vhost('userpages.local', mainapp))
app.use(vhost('www.userpages.local', mainapp))

// listen on all subdomains for user pages在所有子域上侦听用户页面
app.use(vhost('*.userpages.local', userapp))

app.listen(3000)

using with any generic request handler

var connect = require('connect')
var http = require('http')
var vhost = require('vhost')

// create main app创建主应用程序
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任何框架中的外部api服务器
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处理属于api.example.com的req+res
  // pass the request to a standard Node.js HTTP server将请求传递到标准Node.js HTTP服务器
  httpServer.emit('request', req, res)
}))

app.listen(3000)

License

MIT