SunOye-1

A basic chat-room application. Created using tkinter (for GUI), pymysql (for MySQL DBMS), paho-mqtt (for MQTT Protocol) library of Python.

Introduction

This project was created for IoT Lab Project in 3rd Year (6th Semester). It is a chat room application currently programmed to work on a local host machine and it's connected network. The messaging rooms are temporarily created and all the conversation is vanished after the room is closed. The concept for room creation and identification is based on "Room Number" and "password". A person could access a room with Room Number and Password of that room. A random room can be started and infromation can be stored in a local database using MySQL, one could access the rooms from the credentials of the rooms created. This is a leraning porject to use these technologies.

Using SunOye

The steps to use SunOye is rather simple and striaght-forward. The folowing flow chart represents the step flow of the app:

Fig. Flowchart of SunOye

How does it Work?

• Using tkinter library in Python we create a basic GUI for the intial Room Login, Create Room and Room Windows. These Rooms have their credentials stored in the local database (created using MySQL on the localhost).
• The new Room queries are stored in the sunoye database created on the local machine (You can change the login credentials for your cloud connection, or your own localhost). The existing room queries are verified from the sunoye database only.
• For messaging purpose MQTT Protocol is used and Hive MQ's MQTT Public broker is defined as our MQTT Broker for Publish/Subscribe purpose. Implemetation of MQTT is through paho-mqtt library present in Python.
• When an user join a room, it is subscribed to the topic, which is defined by the Unique Room Number in the Broker. All the conversations are done in the Room Window of the user.
• When a message is sent in the Room Window, it is published to the Room Number topic in the broker and received by all the subcribers of the room.
• Database also tracks the number of members in the rooms, when a room is empty it is set to inactive and won't be available for use without creating.

Tools and Technologies

• Python 3.6 (PyCharm IDE)
• tkinter, paho-mqtt, pymysql python library for GUI, MQTT Protocol and MySQL respectively
• HiveMQ Public Broker for MQTT Broker Server