CODEWITHSUNDEEP
pythonhttpflaskwebsocketserver
anon
anon

Reputation:

Flask: two servers supporting WS and HTTP protocols

I would like to run two servers in parallel when my application starts, one for HTTP requests, one for websockets (using python-sockio). I already have a python back-end which starts an HTTP-based server with Flask. However, every time I start the first server, it seems like it is blocking the thread which in turn, causes my second server not to initialize at all. Since I'm using Flask, is there a Flask-way to do this?

Upvotes: 1

Views: 1685

Answers (2)

noslenkwah
noslenkwah

Reputation: 1744

Sounds like an XY problem. Your app can serve both websockets and HTTP. Here's a code example taken from Miguel Grinberg's Flask-Socketio example:

from flask import Flask, render_template
from flask_socketio import SocketIO, emit
    
app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO(app)

@app.route('/')
def index():
    return render_template('index.html')

@socketio.on('my event')
def test_message(message):
    emit('my response', {'data': 'got it!'})

if __name__ == '__main__':
    socketio.run(app)

Upvotes: 0

aparep7474
aparep7474

Reputation: 79

you can try to run the two servers on 2 different ports like so

flask run --host 0.0.0.0 --port 5000

flask run --host 0.0.0.0 --port 5001

If I did a terrible job explaining try and look at this thread Python - How to run multiple flask apps from same client machine

Upvotes: 2

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