frontends

fe1 localhost:3000
fe2 127.0.0.1:3000
fe3 0.0.0.0:3000

live

live1 0.0.0.0:8082

node

node1 0.0.0.0:8100

proxy.coffee

http        = require 'http'
{HttpProxy} = require 'http-proxy'
proxy       = new HttpProxy
{HostList}  = require './lib/host-list'
backends    = {}

server = http.createServer (req, res) ->
  target = backends[route req].get()
  proxy.proxyRequest req, res, target

server.on 'upgrade', (req, socket, head) ->
  target = backends[route req].get()
  proxy.proxyWebSocketRequest req, socket, head, target

server.listen 8000

route = (req) ->
  _route = req.url.match /^\/([\w]+)/
  if req.upgrade
    'live'
  else if _route and backends[_route[1]]?
    _route[1]
  else
    'frontends'

for group in ['live', 'frontends', 'node']
  backends[group] = new HostList group