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UDP-WebSocket

This project is the implemetation of the JSONSocket.v1 protocol, with the usage of UDP, on Linux operating system.

Table of Contents

General Information

The main goal of JSONSocket is to be deployed as the streaming transport protocol in application-layer service meshes, where the JSONSocket headers attached to each stream can be used to communicate rich connection metadata/context across micro-services. This makes it possible to move out-of-band control channels to in-band signaling using JSONSocket, even when the underlying transport layer does not provide such a feature (e.g., UDP or UNIX domain sockets). In the case of UDP-WebSocket I used UDP on Linux operating system for the implementation of the protocol.

Technologies Used

  • C programming language
  • Socket programming
  • JSON-C library

Features

  • Establish connection between server and client after the exchange of JSON request and response headers
  • Join multiple clients to the server t the same time
  • Build the library with the provided Makefile
  • Try out the demo chat program provided, to test the usability of the project

Setup

If you do not have JSON-C installed, you should begin with doing so, using the following command:

sudo apt install libjson-c-dev

After you've installed it, you can generate the library with the provided Makefile using a simple make command in the project's root folder.

Usage

You can start the server side of the projects simply by typing ./Server/server in your console. Similarly you can start the client side by typing in ./Client/client. If you no longer need the generated files, you can delete them by using the make clear command in the project's root folder.

Project Status

The projects fully implemented the JSONSocket.v1 protocol for UDP, however as the specification progresses, so can the project.

Room for Improvement

  • The project is not exactly optimized and could use some polishing.
  • It only implements the specification with the usage of UDP, however in the future it should work on all transport protocols.

Acknowledgements

I would like to thank my consultant, Dr. Gábor Rétvári, for providing me with the opportunity to implement this project based on his specification.