I have almost read every piece of article available on the internet but nothing seems to work for my case. I have installed flask-socketio and everything works fine until I emit the messages from a module other than app.py.

I have tried several ways to accomplish this and I have also read in the doc about it by using Redis but it also did not work for me. Here are the code snippets that I have.

app.py

from flask import Flask
from flask import request
from flask_socketio import send, SocketIO, emit, join_room

app = Flask(__name__)

# This is to stop force sorting in response, by default jsonify sorts the response keys alphabetically
app.config["JSON_SORT_KEYS"] = False

socketio = SocketIO(app, cors_allowed_origins="*")

@socketio.on('join')
def client_join_room(data):
    print(type(data))
    room = data['room']
    join_room(room)
    send('you have entered the room.', room=room)


@app.route('/msg')
def send_message():
    socketio.emit("message", "Server message", room='my_room')
    return "I got you."



if __name__ == '__main__':
    socketio.run(host="0.0.0.0", port=5001, debug=True, app=app)

my_module.py

def some_method():
    import app
    app.socketio.emit("message", "Some information about process", room='my_room', broadcast=True)

Note that I have imported app inside the method because app.py also imports my_module.py

1. I am able to join room.

2. When I call localhost:5001/msg it does emit to 'my_room'.

3. The emit does not work inside my_module.py and I have no idea why.

I am consoling the messages that I get from the server at the front-end so I know for sure which messages are received and which are not.

Also, the some_method() here is called by an API request from app.py. Just in case if that is relevant.

I have made logger=True and then I get this message printed on the terminal for each emit call. Even with the one inside some_method()

emitting event "message" to my_room [/]

Does that mean message is actually sent? If yes, then why am I not getting it in the jquery at front-end.

This is what I am doing in html page

$(document).ready(function () {
        // start up the SocketIO connection to the server
        var socket = io.connect('http://localhost:5001/');
        // this is a callback that triggers when the "message" event is emitted by the server.

        socket.on('message', function(msg){
            console.log(msg)
        });

            socket.emit('join', {room: 'my_room'});
    });