Unable to connect to sanic server

[kiliankoe]

Hi all,

I have this minimal example:

from sanic import Sanic
import socketio

sio = socketio.AsyncServer(async_mode="sanic", cors_allowed_origins="*")
app = Sanic("SanicSocketIOTest")

sio.attach(app)

@sio.event
async def connect(sid):
  print(f"{sid} connected")

@sio.event
async def disconnect(sid):
  print(f"{sid} disconnected")

@sio.event
async def message(sid, data):
  print(f"[{sid}/message] {data}")
  await sio.emit("message", data)


if __name__ == "__main__":
  app.run()

However on running this I am unable to make socket.io connections to the server. I'm stuck on trying to connect (from Postman in this case) and see the following log output from my server.

[2023-07-20 09:27:12 +0200] [79878] [DEBUG] < TEXT '40' [2 bytes]
message async handler error
Traceback (most recent call last):
  File "/Users/kilian/Library/Caches/pypoetry/virtualenvs/sanicsocketio-pnm5-D4U-py3.11/lib/python3.11/site-packages/socketio/asyncio_server.py", line 472, in _handle_connect
    success = await self._trigger_event(
              ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/kilian/Library/Caches/pypoetry/virtualenvs/sanicsocketio-pnm5-D4U-py3.11/lib/python3.11/site-packages/socketio/asyncio_server.py", line 558, in _trigger_event
    ret = await handler(*args)
                ^^^^^^^^^^^^^^
TypeError: connect() takes 1 positional argument but 2 were given

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/kilian/Library/Caches/pypoetry/virtualenvs/sanicsocketio-pnm5-D4U-py3.11/lib/python3.11/site-packages/engineio/asyncio_server.py", line 455, in _trigger_event
    ret = await self.handlers[event](*args)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/kilian/Library/Caches/pypoetry/virtualenvs/sanicsocketio-pnm5-D4U-py3.11/lib/python3.11/site-packages/socketio/asyncio_server.py", line 594, in _handle_eio_message
    await self._handle_connect(eio_sid, pkt.namespace, pkt.data)
  File "/Users/kilian/Library/Caches/pypoetry/virtualenvs/sanicsocketio-pnm5-D4U-py3.11/lib/python3.11/site-packages/socketio/asyncio_server.py", line 475, in _handle_connect
    success = await self._trigger_event(
              ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/kilian/Library/Caches/pypoetry/virtualenvs/sanicsocketio-pnm5-D4U-py3.11/lib/python3.11/site-packages/socketio/asyncio_server.py", line 558, in _trigger_event
    ret = await handler(*args)
                ^^^^^^^^^^^^^^
TypeError: connect() takes 1 positional argument but 3 were given

I've never used this library before, am I missing something?

[kiliankoe]

Ah, I'm an idiot that can't read logs. I kept thinking it was referring to another internal connect function (mine was previously named differently), but the issue is just that my connect function needs to provide a second argument.