Khude Barta is an online chatting application. Primary motive of this project is to display the possibility of integrating internet enabled service in desktop application. There are many different possibility of using this technology in real life. Source Code: https://github.com/arman-bd/khude-barta

1. Data Structure Project
Project Title:
Khude Barta (খুদে বার্তা)
Submitted To:
Pronaya Prosun Das,
Lecturer, Department of CSE,
Shanto Mariam University of Creative Technology
Submitted By:
Arman Hossain 161071014
Tarin Fatema 161071010
Shahinur Shamshad 161071009
Mariful Islam 161071036
CSE 11th
Batch, 5th Trimester
Shanto Mariam University of Creative Technology

2. Khude Barta (খুদে বার্তা)
Khude Barta is an online chatting application. Primary motive of this project is to display
the possibility of integrating internet enabled service in desktop application. There are
many different possibility of using this technology in real life.
Main Features
 User Authentication
 Instant Messaging
 Group Chatting
Technologies Used
 C – Programming Language
 Apache – Web Server
 PHP – Server Side Scripting Language
 MySQL – Database Program
 Electron – Cross Platform Application Builder
 HTML / CSS / JavaScript – Web Development Technologies
Network Diagram

3. Database Structure
We used MySQL as our database backend. Our web service stores and retrieve data
from here. To have minimum functionality in our project we created two table on a
database “user” & “message”. One is for storing & verifying user information and other
is used to store & retrieve messages for users.
User Table
Message Table
Web Service
Backbone of this project is web service behind it. Our web service is built using PHP /
MySQL. Our web service runs on Apace Web Server. Main parts of our service are
Authentication, Send, Receive & Transceiver.
 Authentication – When a client tries to connect to service it verifies the
authenticity of the user by matching username & password stored in database.
After verifying this service returns an access token to the user.
 Send – When an authenticated user sends a message this endpoint receives it &
store it in database.
 Receive – When an authenticated client contacts this endpoint, it returns new
messages in database.
 Transceiver – This endpoint is for sending & receiving at the same time. Our C
based client uses this endpoint for faster access.

4. C Based Client
Most important part of this project is to display the possibility of creating a fully
functional C based chatting client.
Our C client uses Socket & Thread. Socket helps in accessing internet; Thread helps in
sending & receiving message at the same time without blocking the standard input /
output stream. The main benefit of this C client is it can run on different platforms.
Desktop Client
Our desktop client is built using Electron which is a cross platform application builder.
Due to this our application can run on most of the popular operating systems out there.

5. Web Client
Our web client is built using HTML / CSS / JavaScript and it uses the web service for
authenticating, sending & receiving message.
Mobile Client
Interface for our mobile client looks symmetrical to our desktop & web interface. Since
our theme is responsive we can fit it into almost any size of display.