Secured Networked Video Streaming and Messaging System

Table of Contents

• Problem Statement
• Solution
• Key Features
• Prerequisites
• How to Run
  • Server
  • Client
• Code Description
  • Client Code
  • Server Code

Problem Statement

In today's digital age, there is a growing need for secure and efficient communication systems that can handle multiple functionalities simultaneously. Specifically, there is a demand for systems that can provide synchronous chatting and video streaming capabilities over a reliable network protocol. The challenge is to create a robust application that ensures secure communication, real-time updates, and efficient handling of multiple client connections using TCP/IP, all while maintaining high performance and user experience.

Solution

This project addresses the problem by implementing a secured system for video streaming and messaging using Python, socket programming, TCP/IP, OpenCV, and multithreading. The application is designed to handle synchronous chatting and video streaming concurrently, enhancing the user experience with real-time communication and media capabilities.

Key Features

• Secure Communication: Utilizes RSA encryption for secure messaging between clients.
• Concurrent Functionality: Implements multithreading to allow simultaneous video streaming and messaging.
• Real-Time Updates: Clients are updated on entry and exit, demonstrating proficiency in network architecture.
• Video Streaming: Allows clients to request and stream video files from the server.
• Robust Messaging: Facilitates real-time messaging between clients.

Prerequisites

• Python 3.x
• OpenCV
• RSA
• Numpy
• Pandas

2. Install the required libraries using pip:

   pip install opencv-python rsa numpy pandas
   
   

How to Run

Server

1. Start the server by running the following command:

   python server.py
   

The server will start listening for incoming connections on the specified IP and port.

Client

1. Start the client by running the following command:

   python client.py
   

2. Enter your name when prompted. Choose to send a message or request a video stream.

Code Description

Client Code

1. Importing Libraries

     The client code imports necessary libraries such as socket, threading, json, time, rsa, cv2, and numpy.
   
   

2. RSA Key Generation

    The function generate_rsa_key_pair() is used to generate an RSA key pair for encryption and decryption of messages.
   

3. Connect to Server

    The function connect_to_server(name, public_key) establishes a connection to the server and sends the client's name and public key.
   

4. Sending and Receiving Messages

    send_message(client_socket) handles sending messages to selected clients.
    receive_messages(client_socket) handles receiving messages from the server.
   

5. Video Streaming

    request_video_list(client_socket) requests a list of available videos from the server.
    handle_video_stream(chunk_data) handles the video stream received from the server.
    play_video() plays the received video stream.
   

6. Threading

    send_requests(client_socket) runs in a separate thread to handle user inputs for sending messages or requesting videos.
    receive_messages(client_socket) runs in a separate thread to handle incoming messages from the server.
   

Server Code

1. Importing Libraries

    The server code imports necessary libraries such as socket, threading, json, os, time, and cv2.
   

2. Handling New Clients

    The function handle_new_client(server_socket) handles new client connections and starts a new thread for each client.
   

3. Sending and Receiving Messages

    receive_messages(client_socket) handles incoming messages from clients.
    broadcast_message(message) broadcasts messages to all connected clients.
   

4. Video Streaming

    send_video_list(client_socket) sends the list of available videos to clients.
    handle_video_request(video_name, client_socket) handles video streaming to the requesting client.

5. Main Function

    The main() function initializes the server, binds it to the specified IP and port, and starts listening for incoming connections.