Server side code for Vesica

Vesica is a small project by Varun Agarwal and Utkarsh Verma to demonstrate chat application using libp2p from IPFS module.The core code used to interact with Android app is in vesica-core-server folder while vesica-misc demos multi node setup wherein users can communicate with each other using CLI. An key exchange using DiffiHelman is initiated automatically upon setup. The encryption feature is not part of the Android app and therefore was pushed into a different repo altogether.

Deployment

• npm i in root folder
• cd auth followed by node app.js. This setsups the authentication APIs
• cd nodes followed by node node-one-listener.js. This relays the chat messages from one client to another
• Install the apk from https://github.com/varunagarwal315/vesica-android and run the application
• For basic tests refer to vesica-core-server/auth/users.json for hard coded auth values, to make them dynamic you make use vesica-misc/auth instead. This will require some reconfiguration.

Tests

• Several test scenarios are setup in vesica-misc/tests. As some require lot of user interaction (CLI inputs) mocha and chai have not been used to automate the tasks. To use basic chat (no encryption) and learn how lib2p2 functions you can use /tests/chat and run primary.js , secondary.js and tertiary.js in this order in different terminals.
• /vesica-misc/components has sample code for implementing encryption using tweetnacl and native crypto module with the corresponding tests in the /tests folder

Warning

This was a fun side project made by us and in no means to be used in production. The code could so with some refractoring and cleaning but is functional.