Computer-Network-Programming

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• Team:
• Project overview
• Installation and Running
• Architecture
• Functional and Non-Functional Requirements
  • Functional Requirements
  • Non-Functional Requirements
• Use Cases and Scenarios
  • Client Application for Sending Advertisements
  • Bulletin Board
• Labs Overview
  • Lab 1: Network Programming Basics
  • Lab 2: Advanced Networking Concepts

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Team:

• Marcin Jarczewski
• Bartosz Jasiński
• Kacper Murygin
• Michał Sobiech

Project overview

OleOgłoszenia is a university project designed for the "Programowanie Sieciowe" (Computer Network Programming) course, focusing on the development of a real-time advertising bulletin board system. It includes a server and two client applications: one for sending and another for displaying advertisements, utilizing the WebSocket protocol to ensure real-time communication.

Installation and Running

# In the “project” folder:
python3 -m pip install -r requirements.txt
python3 main.py
# Visit the following for interaction:
# To register a bulletin board: localhost:8000/board
# To send an advertisement: localhost:8000/send
# For API endpoints: localhost:8000/docs

Architecture

The system is structured into three components: two client programs and a server, enabling real-time communication and advertisement management across various bulletin boards.

Functional and Non-Functional Requirements

Functional Requirements

• Real-time support for multiple advertising boards.
• Concurrent handling of multiple clients.
• Asynchronous operation with configuration in a single file (config.py).

Non-Functional Requirements

• Clear error messages for clients and error logging for system improvement.
• User-friendly client application.

Use Cases and Scenarios

Client Application for Sending Advertisements

• Adding an advertisement to a new or existing category.

Bulletin Board

• Connecting to a category.
• Receiving new messages.

Labs Overview

Lab 1: Network Programming Basics

• Lab 1.1: Implementation of a simple iterative server-client model using C, focusing on UDP datagram transmission.
• Lab 1.2: Enhancement of the previous task with acknowledgement packets to mimic a TCP-like communication reliability.
• Lab 1.3: Experimentation with UDP datagram sizes, exploring the limits and behaviors of UDP transmissions.

Lab 2: Advanced Networking Concepts

• Lab 2.1: Data serialization and transmission over TCP, exploring efficient data structures and their handling over the network.
• Lab 2.2: Development of a dual-stack (IPv4/IPv6) TCP communication model, ensuring compatibility and flexibility in network programming.
• Lab 2.3a: Investigation of buffer sizes and their impact on transmission efficiency, observing the behavior of TCP sockets under different conditions.