How to send message on python-socketio

Question

The API documentation (https://python-socketio.readthedocs.io/en/latest/intro.html) provides examples of the server and client. But if you run them, you will not start messaging. And I'm not sure how to set it up.

How do I set up messaging so I can output their body through the print function?

client.py

import socketio

sio = socketio.Client()


@sio.event
def connect():
    print('connection established')


@sio.event
def my_message(data):
    print('message received with ', data)
    sio.emit('my response', {'response': 'my response'})


@sio.event
def disconnect():
    print('disconnected from server')


sio.connect('http://localhost:5000')
sio.wait()

server.py

import eventlet
import socketio


sio = socketio.Server()
app = socketio.WSGIApp(sio, static_files={
    '/': {'content_type': 'text/html', 'filename': 'index.html'}
})


@sio.event
def connect(sid, environ):
    print('connect ', sid)
    my_message(sid, {'Test': 'Message'})


@sio.event
def my_message(sid, data):
    sio.send(data)
    print('Send message ', data)


@sio.event
def disconnect(sid):
    print('disconnect ', sid)


if __name__ == '__main__':
    eventlet.wsgi.server(eventlet.listen(('', 5000)), app)

Trace client.py

venv) user@debian:~/work/self_prj/socket_io$ python3 client.py
connection established

Trace server.py

(13043) wsgi starting up on http://0.0.0.0:5000
(13043) accepted ('127.0.0.1', 50352)
127.0.0.1 - - [11/Sep/2019 15:24:08] "GET /socket.io/?transport=polling&EIO=3&t=1568204648.5529237 HTTP/1.1" 200 385 0.000619
connect  cff05ec678794128a6541f33bf3ef6dd
Send message  {'Test': 'Message'}
(13043) accepted ('127.0.0.1', 50356)
127.0.0.1 - - [11/Sep/2019 15:24:08] "POST /socket.io/?transport=polling&EIO=3&sid=cff05ec678794128a6541f33bf3ef6dd HTTP/1.1" 200 167 0.000148
127.0.0.1 - - [11/Sep/2019 15:24:08] "GET /socket.io/?transport=polling&EIO=3&sid=cff05ec678794128a6541f33bf3ef6dd&t=1568204648.5590577 HTTP/1.1" 200 183 0.002194
127.0.0.1 - - [11/Sep/2019 15:24:33] "POST /socket.io/?transport=polling&EIO=3&sid=cff05ec678794128a6541f33bf3ef6dd HTTP/1.1" 200 167 0.000372
127.0.0.1 - - [11/Sep/2019 15:24:33] "GET /socket.io/?transport=polling&EIO=3&sid=cff05ec678794128a6541f33bf3ef6dd&t=1568204648.5659044 HTTP/1.1" 200 183 24.994966
127.0.0.1 - - [11/Sep/2019 15:24:58] "POST /socket.io/?transport=polling&EIO=3&sid=cff05ec678794128a6541f33bf3ef6dd HTTP/1.1" 200 167 0.000355

Answer 1

You established a connection. But you didn't print the message. In the client side, instead of this:

@sio.event
def my_message(data):
    print('message received with ', data)
    sio.emit('my response', {'response': 'my response'})

Use that:

@sio.event
def message(data):
    print('message received with ', data)
    sio.emit('my response', {'response': 'my response'})