Simple WebSocket Chat App with FastAPI

This is a simple demonstration chat application built using FastAPI and WebSockets. It allows clients to connect via WebSocket and exchange messages in real-time.

Setup

Requirements

• Python 3.8 or later

Installation

1. Clone this repository.
2. Navigate to the project directory.
3. Install the dependencies by running:

   pip install -r requirements.txt
   

Running the App

From a main.app folder use the following command to start the FastAPI server:

uvicorn main:app --reload --host 0.0.0.0 --port 8000

The server will be accessible at http://localhost:8000.

Usage

• Open your browser and navigate to http://localhost:8000.
• Once connected, you can send messages in the chat input field.
• Messages will be displayed in the chat area, and other connected clients will see them in real-time.

Dependencies

• fastapi
• uvicorn
• websockets

File Structure

• main.py: Contains the FastAPI application setup and WebSocket endpoints.
• templates/index.html: HTML template for the chat interface.
• services.py: Contains the ConnectionManager class responsible for managing WebSocket connections.

Docker Setup (Optional)

You can also run the app using Docker. Ensure Docker is installed on your system.

Run docker-compose from the fastapichatwebsockets folder: docker build -t fastapi-websocket-chat .

The app will be accessible at http://localhost:8000.

Feel free to modify and extend the code as needed for your own projects!