LAN-Based Shared Todo Manager with Priority Queues

This is a simple Task Manager built using C++ socket programming, demonstrating client-server communication. The client allows users to log in with a username and manage their tasks, while the server processes and stores the data during the session.

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Features

• Real-time communication over TCP
• Multiple clients handled by server
• Clean and modular C++ code
• Uses standard Berkeley/POSIX sockets
• Easy to compile and run

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Technologies Used

• C++
• POSIX Sockets (Berkeley Sockets)
• Terminal / Command Line

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Project Structure

• server.cpp – Server-side logic: handles client connections and task management.
• client.cpp – Client-side logic: connects to the server and interacts with the user.

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Requirements

• C++ compiler (e.g., g++)
• Linux or UNIX-based system (or WSL on Windows)
• Terminal/console access

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🔧 Installation & Usage

1. Clone the Repository

git clone https://github.com/your-username/tcp-chat-app.git
cd tcp-chat-app

2. Compile the code

To compile the server and client in Windows using executable

g++ -std=c++11 server.cpp -o server.exe -lws2_32                                           
g++ -std=c++11 client.cpp -o client.exe -lws2_32  

To compile the server and client in UNIX/mac

g++ server.cpp -o server
g++ client.cpp -o client

3. Run the server

./server

4. Run the client

./client

Client Interface

Upon connecting to the server, the client prompts the user to enter a username. After that, the available commands are displayed, and the user is welcomed into the task manager interface.

Connected to server.
Enter your username: user1

Commands:
 - ADD priority|YYYY-MM-DD|description
 - LIST
 - LIST COMPLETED
 - LIST ALL
 - MARK <index>
 - exit

> Welcome, user1!

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Supported Commands

The following commands can be used by clients to interact with the server:

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🔹 ADD priority|YYYY-MM-DD|description

Adds a new task with a specified priority, due date, and description.

• priority: Task urgency (high, medium, or low)
• YYYY-MM-DD: Task deadline in date format
• description: A short description of the task

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🔹 LIST

Displays all current tasks maintained by the server.

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🔹 exit

Ends the current session and disconnects the client from the server.