can not ues whit eventlet

[2651084156]

when i want to use the eventlet it will give me like this

error

127.0.0.1 - - [04/Oct/2021 22:25:54] "GET /socket.io/?EIO=4&transport=websocket&sid=hd3nk0cBPJ0EtieDAAAG HTTP/1.1" 500 - Error on request: Traceback (most recent call last): File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\werkzeug\serving.py", line 323, in run_wsgi execute(self.server.app) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\werkzeug\serving.py", line 312, in execute application_iter = app(environ, start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\flask\app.py", line 2464, in __call__ return self.wsgi_app(environ, start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\flask_socketio\__init__.py", line 46, in __call__ start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\middleware.py", line 60, in __call__ return self.engineio_app.handle_request(environ, start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\socketio\server.py", line 573, in handle_request return self.eio.handle_request(environ, start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\server.py", line 393, in handle_request environ, start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\socket.py", line 104, in handle_get_request start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\socket.py", line 158, in _upgrade_websocket return ws(environ, start_response) File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\async_drivers\eventlet.py", line 16, in __call__ raise RuntimeError('You need to use the eventlet server. ' RuntimeError: You need to use the eventlet server. See the Deployment section of the documentation for more information.

i try to put（async_mode='eventlet' ）in different places but it still not working.

when i put here it will feedback a error like this

error

127.0.0.1 - - [04/Oct/2021 22:25:54] "GET /socket.io/?EIO=4&transport=websocket&sid=hd3nk0cBPJ0EtieDAAAG HTTP/1.1" 500 - Error on request:

Traceback (most recent call last):

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\werkzeug\serving.py", line 323, in run_wsgi
execute(self.server.app)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\werkzeug\serving.py", line 312, in execute
application_iter = app(environ, start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\flask\app.py", line 2464, in call
return self.wsgi_app(environ, start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\flask_socketio_init_.py", line 46, in call
start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\middleware.py", line 60, in call
return self.engineio_app.handle_request(environ, start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\socketio\server.py", line 573, in handle_request
return self.eio.handle_request(environ, start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\server.py", line 393, in handle_request
environ, start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\socket.py", line 104, in handle_get_request
start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\socket.py", line 158, in _upgrade_websocket
return ws(environ, start_response)

File "C:\ProgramData\Anaconda3\envs\flask_web\lib\site-packages\engineio\async_drivers\eventlet.py", line 16, in call
raise RuntimeError('You need to use the eventlet server. '

RuntimeError: You need to use the eventlet server. See the Deployment section of the documentation for more information.

and i try put it on other place it do not work
like here

in here it couldn't ues websocket just ues polling . hao can i to slove it ? i just want use websocket。wwww

this is my code.

code

# coding:utf-8 # -*- coding: utf-8 -*- import random

from engineio.async_drivers import eventlet
from flask import Flask, render_template, request
from flask_socketio import SocketIO, emit
from flask_sockets import Sockets

from flask import Flask, render_template
from flask_socketio import SocketIO, emit

app = Flask(name)
app.config['SECRET_KEY'] = 'secret_key'

socketio = SocketIO(app, cors_allowed_origins='*' , always_connect=True, async_mode='eventlet')

socketio.init_app(app, cors_allowed_origins='*' , always_connect=True, async_mode='eventlet')

name_space = '/dcenter'

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

@app.route('/push')
def push_once():
event_name = 'dcenter'
reee = random.randint(1,100)

broadcasted_data = {'data': reee}
socketio.emit(event_name, broadcasted_data, broadcast=False, namespace=name_space)
return 'done!'

@socketio.on('connect', namespace=name_space)
def connected_msg():
print('client connected.')

@socketio.on('disconnect', namespace=name_space)
def disconnect_msg():
print('client disconnected.')

@socketio.on('my_event', namespace=name_space)
def mtest_message(message):
print(message)
emit('my_response',
{'data': message['data'], 'count': 1})

if name == 'main':

socketio.run(app, host='0.0.0.0', port=5000, always_connect=True, async_mode='eventlet')

[miguelgrinberg]

The problem is indicated in this error: "RuntimeError: You need to use the eventlet server. See the Deployment section of the documentation for more information".

Have you installed eventlet in your virtualenv? That would explain why socketio.run() is running Werkzeug as a server instead of eventlet.

[2651084156]

Okay, but you see that you are running Werkzeug instead of eventlet? Why is that? Something in the way you start the project is wrong. Try running from the CLI instead of from PyCharm.

ok i slove it i don't why it can not run in PyCharm . is it have any special？

[miguelgrinberg]

You should be able to run from PyCharm. Your project start configuration is just incorrect and needs to be fixed. You probably have it set to run flask run, which is fine for Flask, but not for Flask-SocketIO.

[2651084156]

You should be able to run from PyCharm. Your project start configuration is just incorrect and needs to be fixed. You probably have it set to run flask run, which is fine for Flask, but not for Flask-SocketIO.

i don't know maybe i use the pycharm flask web template that cause the problem？

[miguelgrinberg]

As I said above, it depends on how your configuration runs the flask project. If it uses flask run you have to change it to run your main script.

[2651084156]

As I said above, it depends on how your configuration runs the flask project. If it uses flask run you have to change it to run your main script.

i think i know the reason because is ues (C:\ProgramData\Anaconda3\envs\flask_web\python.exe -m flask run) to run it,so i know how to slove it thank u to answer my question.