sockets listenets on other file/directory

[UtopiaBe]

Hey, how can i write my sockets on other folder/file and to tell my main.py to execute them?

my main file:

from fastapi import FastAPI
from starlette.middleware.cors import CORSMiddleware


def get_application():
    app = FastAPI(title="Evil Islands", version="1.0.0", redoc_url=None)
    app.add_middleware(
        CORSMiddleware,
        allow_origins=["http://localhost:8080"],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

    return app


app = get_application()

I want to place @app.sio listeners to a directory - lets say ../sockets

thank you.

[hmajid2301]

Hi perhaps I'm misunderstanding but something like in the README example ? Here https://github.com/pyropy/fastapi-socketio#usage

[shellking4]

Hey, how can i write my sockets on other folder/file and to tell my main.py to execute them?

my main file:

from fastapi import FastAPI
from starlette.middleware.cors import CORSMiddleware


def get_application():
    app = FastAPI(title="Evil Islands", version="1.0.0", redoc_url=None)
    app.add_middleware(
        CORSMiddleware,
        allow_origins=["http://localhost:8080"],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

    return app


app = get_application()

I want to place @app.sio listeners to a directory - lets say ../sockets

thank you.

You can do so but make sure to include in the main app entry app.py or main.py (which means where the fastapi object has been instantiated) the import of the module where those socket listeners are

to show case what I'm saying, here is a basic example

# main.py
import socket_handlers.socket_handler

app = FastAPI(title="Evil Islands", version="1.0.0", redoc_url=None)
socket_manager = SocketManager(app=app)

# socket_handlers/socket_handler.py
from main import socket_manager as sm

@sm.on('send test result')
async def test_socketio(sid, *args, **kwargs) -> any:
    print("received event from client")
    await sm.emit("test result", { "test result": "your test result is here" })
    return

[falkoschindler]

I don't understand. Wouldn't that introduce a circular import dependency?

• main.py wants socket_handler.py.
• But socket_handler.py needs socket_manager from main.py, which is only created after importing socket_handler.py.

In my project the server complains:

Error loading ASGI app. Could not import module "app.main".

[TomW1605]

hi, im trying to do the same thing and getting the same error. any guidence would be welcome

EDIT: found a sloution here: https://haseebmajid.dev/posts/2021-12-31-separate-function-handler-modules-when-using-python-socketio/

TL; DR: have a seprate __init__.py file that imports both the socket handler and the FastAPI app then runs the uvicorn function to start the server