What it does

Keeps track of how many socket.emit's an ip has submitted under a certain timeframe and determine if it is spammy behaviour. If the module determined the user is spamming the socket will receive a temp ip ban. Everything is customizable.

How it works

All connected sockets will have a object binded to them full of information that socket-anti-spam keeps track of. This includes how much 'spamScore'someone has. If a socket is doing a socket.emit his spamScore will increase. The module will give all sockets connected a -1 spamScore every second (no intervals!). if the spamScore is above a certain spamScore threshold the socket will be disconnected. If the socket keeps spamming after a certain kick threshold, the socket will be temp ip banned.

You can see a demo of the module in action here, please remember that this is from previous versions and the appearances might look different

Changelog

https://github.com/michaeldegroot/socket-anti-spam/commits/master

Getting started

1. Start by installing the package:

npm install socket-anti-spam

2. Load the code

  const SocketAntiSpam  = require('socket-anti-spam')
  const socket-io = require('socket.io').listen(8080)

  // Redis is not needed, but can be used
  const redis = require('redis')
  const client = redis.createClient()

  const socketAntiSpam = new SocketAntiSpam({
    banTime:            30,         // Ban time in minutes
    kickThreshold:      2,          // User gets kicked after this many spam score
    kickTimesBeforeBan: 1,          // User gets banned after this many kicks
    banning:            true,       // Uses temp IP banning after kickTimesBeforeBan
    io:                 socket-io,  // Bind the socket.io variable
    redis:              client,      // Redis client if you are sharing multiple servers
  })

  // Call functions with created reference 'socketAntiSpam'
  socketAntiSpam.event.on('ban', data => {
    // Do stuff
  })

Now all sockets will be individually checked if they spam your socket.emits and if they do they will be disconnected, after to many repeated offenses they will be temp banned (ip based).

Events

event.on('authenticate', callback)

Event fires when a socket authenticates with the socket-anti-spam module

Example

socketAntiSpam.event.on('authenticate', socket => {
  // We have the socket var that tried to authenticate


  // We could get his IP
  console.log(socket.ip)
})

event.on('kick', callback)

Event fires when a socket was kicked

Example

socketAntiSpam.event.on('kick', (socket, data) => {
  // We have the socket var that was kicked

  // The second parameter is a object that was binded to the socket with some extra information
  // It's how socket-anti-spam keeps track of sockets and their states
})

event.on('ban', callback)

Event fires when a socket was banned

Example

socketAntiSpam.event.on('ban', (socket, data) => {
  // We have the socket var that was banned

  // The second parameter is a object that was binded to the socket with some extra information
  // It's how socket-anti-spam keeps track of sockets and their states
})

event.on('spamscore', callback)

Event fires when a socket received a new spamscore

Example

socketAntiSpam.event.on('spamscore', (socket, data) => {
  // We have the socket var that received a new spamscore update

  // The second parameter is a object that was binded to the socket with some extra information
  // It's how socket-anti-spam keeps track of sockets and their states

  // If you want the spamscore you can get it via:
  console.log(data.score)
})

API

.addSpam(socket)

socket:     Object      // The user socket variable

Can be used to increase the spam score of a socket, if you set the io variable in the init function you do not need this. Unless you want to do something other then adding a spamscore for every socket emit

Example

const io = require('socket.io')
io.sockets.on('connection', socket => {
    socket.on('chatMessage', () => {
        socketAntiSpam.addSpam(socket) // Adds a spamscore because this socket sent a emit
        // The rest of your code
    })
})

.getBans()

Returns a array full of ip's that are currently banned

Example

const bans = socketAntiSpam.getBans()
console.log(bans)   // Returns a array full of ip's that are currently banned

.ban(data,minutes)

data:       Object / String     //  Can be either socket.ip or a ip in string format you want to ban
minutes:    Number              // Number in minutes how long the ban will be active, if not supplied default will be used (60)

Simply bans a socket or ip

Example banning a ip in string format

socketAntiSpam.ban('127.0.0.1') // Bye!

Example banning a socket, and set ban time for 5 minutes

io.sockets.on('connection', socket => {
    socketAntiSpam.ban(socket, 5)
})

.unBan(data)

data:   Object / String    //  Can be either socket.ip or a ip in string format you want to unban

Simply unbans a socket or ip

Example unbanning a ip in string format

socketAntiSpam.unban('127.0.0.1') // He's back!

Example unbanning a socket

io.sockets.on('connection', socket => {
    socketAntiSpam.unBan(socket)
})

Contact

You can contact me at [email protected]