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About

This project aims to decipher the protocol diep.io uses to communicate, in hopes of creating our own server eventually or doing interesting things with the game.

Getting Started

All the protocol information discovered so far is contained in the Wiki.

First, read up on the game protocol in the wiki "Protocol" page in order to familiarize yourself with the basics of diep.io communication. Everything we have learned so far is stored in the wiki, and reading it will allow you a headstart in developing your own server, understanding the game protocol, or doing anything you wish with the game.

Then, you can start using the provided Chrome extension to start reading and modifying the game packets yourself. The extension is stored in the chrome_ext directory, and a README is included in that directory. There's even a wiki page if you want more information.

Installing the Extension

To set up the provided extension, first clone this project and save it on your computer. Next, go to chrome://extensions and click "Load Unpacked Extension". Then, navigate to its directory and enable the extension. If you modify any of the code, go to chrome://extensions and click "Reload".

Using the Extension

The file "modifier.js" contains a framework for handling communications to/from the server.

To intercept packets sent by the client, modify the function handleSendData(data). If you would like to modify the packet sent to the server, simply modify data, which is then returned by the function and sent to the server.

Similarly, to intercept/modify packets sent by the server, use the function handleRecvData(event, proxiedRecv).

The event variable is simply the Javascript WebSocket event; to access the data, use event.data. For altering the data, all you have to do is modify event.data.

If you would like to send the client custom packets or such in order to observe the client's response, etc., use proxiedRecv.call(this, customEvent).

Remember to navigate to chrome://extensions and click "Reload" after any changes to the code!

How To Contribute

If you discover anything interesting or have anything you can contribute, please consider submitting a pull request.

Forking this project and submitting a pull request will allow you to contribute changes to code.

Contributors

Team Members: firebolt55439, hxxr, FlorianCassayre