ip-checker

Check client ip for koa & express.

Quick Start

• npm install ip-checker to install ip-checker;
• express

var express = require('express')
  , app     = express();
app.use(require('ip-checker')({
  default: 'x',
  allow: ['127.0.0.1']
}));
app.listen(3000)

• koa

var app = require('koa')()
app.use(require('ip-checker')({
  default: 'x',
  allow: ['127.0.0.1'],
  mode: 'koa'
}))
app.listen(3000)

• test

curl -H 'x-forwarded-for: 127.0.0.2' -i  http://localhost:3000/
curl -H 'x-forwarded-for: 127.0.0.1' -i  http://localhost:3000/

Config

Name	Description	Default value
default	Action for unknown ip. * for allow all unknown ips, x for block all unknown ips.	*
checker	A string or function to check request ip. Return allow string to allow request, block string to block request, empty string to tell ip-checker it's an unknown request	x-forwarded-for
disable	Disable ip-checker or not.	false
allow	A string array that means request is allowed if client ip is in this set.	[]
block	A string array that means request is blocked if client ip is in this set.	[]
mode	express or koa mode.	express
emitter	You can emit a disable event with a bool value to switch disable value.
process.env.IP_CHECKER_DEBUG	Set this value to true to show debug log