Flask-Soket IO Introduction
Flask is a Python web framework or module which allows the developer to create web applications with ease. The socket.io library is used to add some real-time functionality to the application. The socket.io library can be defined as a transport protocol that provides a real-time event-based communication which are bidirectional.
For this flask-socket.io module, the system will need: Python 2.7 or greater, Flask 0.9, SocketIO 0.8. It can be installed on all platforms, mac, or windows. Mac users can also use Homebrew as a package manager.
Installation
For installation write the command given below on command line(cmd) or the terminal:
pip install flask-socketio
or
pip3 install flask-socketio
if the system is having pip version 3.
In python language the following code represents how to import the flask-socket.io package for further use:
from flask import Flaskfrom flask import render_templatefrom flask_socketio import SocketIOThe code snippet given below shows the initialization of the package to be used:
application = Flask(__name__)application.config[‘SECRET_KEY’] = ‘secret!’socketio = SocketIO(application)if __name__ == ‘__main__’: socketio.run(application)The init_app() method can also be used for the initialization.
By executing the above python script the web server for socket.io will initiate.
The flask-socket.io module can be used for the following tasks:
· Receiving Messages
· Sending Messages
· Broadcasting
· Creating Rooms
· Connection Events
· Class-Based Namespace
· Error Handling
· Debugging and Troubleshooting
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