Flask-socketio: Socket.io not working on my machine

Created on 8 Oct 2018 · 43Comments · Source: miguelgrinberg/Flask-SocketIO

I'm new in developing and Flask I had 2 projects during my course , the error occurs in the second one only and only when socket.io exist , it's an empty project but Flask behaves very weird.

for example, every time I run Flask without socket IO it reads something like this

D:\WORK\study sc5\project1\project1>flask run
Serving Flask app "hello"
Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

in project 2 we had to work with socket.io and I know it's the reason because I deleted its line and the weird behavior were gone , also no errors when I ran the socket IO application I get

D:\WORK\study sc5\project2\project2>flask run
 * Serving Flask-SocketIO app "application"

that is it after a while I get

[WinError 10053] An established connection was aborted by the software in your host machine
Sun Oct  7 23:47:57 2018 {'REMOTE_ADDR': '127.0.0.1', 'REMOTE_PORT': '56449', 'HTTP_HOST': '127.0.0.1:5000', (hidden keys: 23)} failed with ConnectionAbortedError

with that said here is my simple python code


import os, passlib ,requests ,time

from flask import Flask, session , render_template , request,redirect,url_for
from flask_socketio import SocketIO, emit ,join_room, leave_room , Namespace
from datetime import date , datetime
from flask_session import Session
from sqlalchemy import create_engine
from sqlalchemy.orm import scoped_session, sessionmaker
from passlib.hash import sha256_crypt


engine = create_engine("postgres:**************************",echo=True)
db = scoped_session(sessionmaker(bind=engine))



app = Flask(__name__)
app.config["SECRET_KEY"] = 'secrettt'
#sess.init_app(app)
socketio = SocketIO(app)

class NRoom:
    def __init__(self,Rowner,Rname,Rpw):
        self.Rowner = Rowner
        self.Rname = Rname
        self.Rpw = Rpw


class MyCustomNamespace(Namespace):
def on_connect(self):
    pass

def on_disconnect(self):
    pass

def on_my_event(self, data):
    emit('my_response', data)

socketio.on_namespace(MyCustomNamespace('/test'))


@socketio.on('message')
def handle(msg):
    print(f'\n\n\n Message:{msg}\n\n\n' )
    send(msg, broadcast=True)


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

@app.route("/guest" , methods = ["GET" , "POST"])
def guest():

    if request.method == "POST":
    nickname = request.form.get("guestname")
    session["user"] = nickname
    print(f"\n\n\n {nickname} \n\n\n\n ")

    return redirect(url_for('guest',guestname=nickname))
else:


    return render_template("guest.html")

index html file

<!DOCTYPE html>
    <html>
        <head>
            <meta charset="utf-8">
            <meta name="viewport" content="width=device-width">
            <title>welcome bk</title>
        </head>
        <body>
            <script type="text/javascript" src="{{url_for('static', filename='javascript.js')}}"></script>
            <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/socket.io/1.3.6/socket.io.min.js"></script>
            <script type="text/javascript" charset="utf-8">

            var socket = io.connect('http://' + document.domain + ':' + location.port);
            socket.on('connect', function() {
            socket.emit('my event', {data: 'I\'m connected!'});
            });
        </script>


        <script>

                document.addEventListener('DOMCOntentLoaded',function(){

                    var socket = io.connect('http://127.0.0.1:5000');

                    socket.on('connect',function() {
                        socket.send("test socketio have passed ! ");

                    });
                });

        </script>
        <form action="{{ url_for('login') }}">
             <input type="submit" value="login" />
        </form>

        <form action="{{ url_for('regist') }}">
             <input type="submit" value="regist" />
        </form>


        <form action="{{ url_for('guest') }}">
             <input type="submit" value="login as guest" />
        </form>
    </body>
</html>

tested it with chrome and Firefox

question

Source

ll-M-ll

All 43 comments

Python 2 or Python 3? If you Google this issue, some people reported this error with Python 2, but the problem was address in Python 3, so maybe give 3 a try if you are using 2.

Also things may change if you change your async mode. Do you currently have eventlet or gevent installed on your virtualenv? If not, try installing eventlet, that will give you the benefit of having WebSocket support, and will use a different web server, which may help bypass the issue. If you are getting this error with eventlet installed, then try gevent instead, once again, it's a different web server, so you may have better luck.

miguelgrinberg on 8 Oct 2018

python 3.6.4 (anaconda)
i have just updated python pip to 1.81
i tried default and eventlet so far both same result
"D:\WORK\study sc5\project2\project2>flask run

Serving Flask-SocketIO app "application"

update:
i tried gevent >>> same result

but i dont know what to do should i remove anaconda and install python ?

ll-M-ll on 8 Oct 2018

I'm not sure. It's been a while since I've used the native version of Python on Windows, on that platform I use either the Ubuntu subsystem or Cygwin, and both seem very stable. I'll find a Windows machine to test again and let you know. As one more test you may want to try the example application in this repository, just to rule out a problem in your own application.

miguelgrinberg on 8 Oct 2018

honstly i dont know how to use the repository
but that is all the code i have in application.py

import os

from flask import Flask
from flask_socketio import SocketIO, emit

app = Flask(__name__)
app.config["SECRET_KEY"] = "sdfsdfssefe"
socketio = SocketIO(app)


@app.route("/")
def index():
    return "Project 2: TODO"

i appraciate your help alot i just wanna say that
also i have tested it with windows10 and windows 7 different machines

ll-M-ll on 8 Oct 2018

Okay, I'll look for a Windows machine to test this on and get back to you.

miguelgrinberg on 8 Oct 2018

thank you so much !!
i have tried to upgrade anaconda it didnt work ( bugged for some reason ) so i closed it , uninstall it and started setting up everything and environmental variables again
now i have Anaconda Navigator 1.9.2 which suppose to be the latest version
when i tested the same code i got this extra line

D:\WORK\study sc5\project2\project2>flask run

Serving Flask-SocketIO app "application
Forcing debug mode off

i appreciate your effort sir , thanks a lot

ll-M-ll on 8 Oct 2018

What's the output of the pip freeze command?

miguelgrinberg on 8 Oct 2018

alabaster==0.7.11
anaconda-client==1.7.2
anaconda-navigator==1.9.2
anaconda-project==0.8.2
appdirs==1.4.3
asn1crypto==0.24.0
astroid==2.0.4
astropy==3.0.4
atomicwrites==1.2.1
attrs==18.2.0
Automat==0.7.0
Babel==2.6.0
backcall==0.1.0
backports.shutil-get-terminal-size==1.0.0
beautifulsoup4==4.6.3
bitarray==0.8.3
bkcharts==0.2
blaze==0.11.3
bleach==2.1.4
bokeh==0.13.0
boto==2.49.0
Bottleneck==1.2.1
certifi==2018.8.24
cffi==1.11.5
chardet==3.0.4
click==6.7
cloudpickle==0.5.5
clyent==1.2.2
colorama==0.3.9
comtypes==1.1.7
conda==4.5.11
conda-build==3.15.1
constantly==15.1.0
contextlib2==0.5.5
cryptography==2.3.1
cycler==0.10.0
Cython==0.28.5
cytoolz==0.9.0.1
dask==0.19.1
datashape==0.5.4
decorator==4.3.0
defusedxml==0.5.0
distributed==1.23.1
docutils==0.14
entrypoints==0.2.3
et-xmlfile==1.0.1
fastcache==1.0.2
filelock==3.0.8
Flask==1.0.2
Flask-Cors==3.0.6
Flask-SocketIO==3.0.2
gevent==1.3.6
glob2==0.6
greenlet==0.4.15
h5py==2.8.0
heapdict==1.0.0
html5lib==1.0.1
hyperlink==18.0.0
idna==2.7
imageio==2.4.1
imagesize==1.1.0
incremental==17.5.0
ipykernel==4.10.0
ipython==6.5.0
ipython-genutils==0.2.0
ipywidgets==7.4.1
isort==4.3.4
itsdangerous==0.24
jdcal==1.4
jedi==0.12.1
Jinja2==2.10
jsonschema==2.6.0
jupyter==1.0.0
jupyter-client==5.2.3
jupyter-console==5.2.0
jupyter-core==4.4.0
jupyterlab==0.34.9
jupyterlab-launcher==0.13.1
keyring==13.2.1
kiwisolver==1.0.1
lazy-object-proxy==1.3.1
llvmlite==0.24.0
locket==0.2.0
lxml==4.2.5
MarkupSafe==1.0
matplotlib==2.2.3
mccabe==0.6.1
menuinst==1.4.14
mistune==0.8.3
mkl-fft==1.0.4
mkl-random==1.0.1
more-itertools==4.3.0
mpmath==1.0.0
msgpack==0.5.6
multipledispatch==0.6.0
navigator-updater==0.2.1
nbconvert==5.4.0
nbformat==4.4.0
networkx==2.1
nltk==3.3
nose==1.3.7
notebook==5.6.0
numba==0.39.0
numexpr==2.6.8
numpy==1.15.1
numpydoc==0.8.0
odo==0.5.1
olefile==0.46
openpyxl==2.5.6
packaging==17.1
pandas==0.23.4
pandocfilters==1.4.2
parso==0.3.1
partd==0.3.8
path.py==11.1.0
pathlib2==2.3.2
patsy==0.5.0
pep8==1.7.1
pickleshare==0.7.4
Pillow==5.2.0
pkginfo==1.4.2
pluggy==0.7.1
ply==3.11
prometheus-client==0.3.1
prompt-toolkit==1.0.15
psutil==5.4.7
py==1.6.0
pyasn1==0.4.4
pyasn1-modules==0.2.2
pycodestyle==2.4.0
pycosat==0.6.3
pycparser==2.18
pycrypto==2.6.1
pycurl==7.43.0.2
pyflakes==2.0.0
Pygments==2.2.0
pylint==2.1.1
pyodbc==4.0.24
pyOpenSSL==18.0.0
pyparsing==2.2.0
PySocks==1.6.8
pytest==3.8.0
pytest-arraydiff==0.2
pytest-astropy==0.4.0
pytest-doctestplus==0.1.3
pytest-openfiles==0.3.0
pytest-remotedata==0.3.0
python-dateutil==2.7.3
python-engineio==2.3.1
python-socketio==2.0.0
pytz==2018.5
PyWavelets==1.0.0
pywin32==223
pywinpty==0.5.4
PyYAML==3.13
pyzmq==17.1.2
QtAwesome==0.4.4
qtconsole==4.4.1
QtPy==1.5.0
requests==2.19.1
rope==0.11.0
ruamel-yaml==0.15.46
scikit-image==0.14.0
scikit-learn==0.19.2
scipy==1.1.0
seaborn==0.9.0
Send2Trash==1.5.0
service-identity==17.0.0
simplegeneric==0.8.1
singledispatch==3.4.0.3
six==1.11.0
snowballstemmer==1.2.1
sortedcollections==1.0.1
sortedcontainers==2.0.5
Sphinx==1.7.9
sphinxcontrib-websupport==1.1.0
spyder==3.3.1
spyder-kernels==0.2.6
SQLAlchemy==1.2.11
statsmodels==0.9.0
sympy==1.1.1
tables==3.4.4
tblib==1.3.2
terminado==0.8.1
testpath==0.3.1
toolz==0.9.0
tornado==5.1
tqdm==4.26.0
traitlets==4.3.2
Twisted==18.7.0
unicodecsv==0.14.1
urllib3==1.23
wcwidth==0.1.7
webencodings==0.5.1
Werkzeug==0.14.1
widgetsnbextension==3.4.1
win-inet-pton==1.0.1
win-unicode-console==0.5
wincertstore==0.2
wrapt==1.10.11
xlrd==1.1.0
XlsxWriter==1.1.0
xlwings==0.11.8
xlwt==1.3.0
zict==0.1.3
zope.interface==4.5.0

ll-M-ll on 8 Oct 2018

what should i do ?

ll-M-ll on 8 Oct 2018

As I said above, if you were willing to switch to the Ubuntu subsystem on your Windows machine, or maybe install Cygwin, then everything will work fine, because these two use a Unix build of Python.

If you prefer to stay with your current Windows native Python, then I'm not sure. This problem is mentioned a lot if you Google it. If the application works well in spite of the error, then maybe it is okay to ignore it.

miguelgrinberg on 9 Oct 2018

i have installed Cygwin and thatis what happen when i run project 1 which have no Socket io

D:\Work\study\project1>flask run

Serving Flask-SocketIO app "application.py"
Forcing debug mode off
Serving Flask app "application.py"
Environment: production
WARNING: Do not use the development server in a production environment.
Use a production WSGI server instead.
Debug mode: off
Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

when i ran project 2 now it shows an error ( which socketIO ):

D:\Work\study\project2org\project2>flask run

Serving Flask-SocketIO app "application.py"
Forcing debug mode off
Traceback (most recent call last):
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\runpy.py", l
ine 193, in _run_module_as_main
"__main__", mod_spec)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\runpy.py", l
ine 85, in _run_code
exec(code, run_globals)
File "C:\Users\Mena\AppData\Local\Programs\Python\Python37-32\Scripts\flask.ex
e__main__.py", line 9, in
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\flask\cli.py", line 894, in main
cli.main(args=args, prog_name=name)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\flask\cli.py", line 557, in main
return super(FlaskGroup, self).main(args, *kwargs)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\click\core.py", line 717, in main
rv = self.invoke(ctx)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\click\core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\click\core.py", line 956, in invoke
return ctx.invoke(self.callback, *ctx.params)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\click\core.py", line 555, in invoke
return callback(args, *kwargs)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\click\decorators.py", line 64, in new_func
return ctx.invoke(f, obj, *args, *kwargs)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\click\core.py", line 555, in invoke
return callback(args, *kwargs)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\flask_socketio\cli.py", line 68, in run
run_server()
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\flask_socketio\cli.py", line 62, in run_server
use_reloader=False, log_output=debugger)
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\flask_socketio__init__.py", line 526, in run
run_server()
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\flask_socketio__init__.py", line 505, in run_server
eventlet_socket = eventlet.listen(addresses[0][4], addresses[0][0])
File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-package
s\eventlet\convenience.py", line 78, in listen
sock.bind(addr)
OSError: [WinError 10048] Only one usage of each socket address (protocol/networ
k address/port) is normally permitted

ll-M-ll on 9 Oct 2018

👍1

The second error means that you have some other application that was recently running on the same port. After a few minutes the port will be free and you will be able to use it. You can try using a different port number if you don't want to wait.

miguelgrinberg on 9 Oct 2018

yea i got it i closed it the other server running on cmd and it worked
i ran it again on cmd ( project 2 behaving the same way as before ) when i run it project2 or project1 with cgywin he doesn't even see the python app

ll-M-ll on 9 Oct 2018

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ flask run
Usage: flask run [OPTIONS]

Error: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.

Forcing debug mode off

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2

ll-M-ll on 9 Oct 2018

The error is self-explanatory. Set the FLASK_APP environment variable.

miguelgrinberg on 9 Oct 2018

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ set flask_app=application.py

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ flask run
Usage: flask run [OPTIONS]

Error: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.

Forcing debug mode off

ll-M-ll on 9 Oct 2018

i know i already did
its just for some reason works on CMD not on cgywin

ll-M-ll on 9 Oct 2018

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ export FLASK_APP="application.py"

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ flask run

nothing happen for a while now ( around 1 min )
when i go to http://127.0.0.1:5000/ it reads "Project 2: TODO"

but it doesnt say anything ...

when i tried with my main project 2 file

Mena@Mena-PC /cygdrive/d/work/study/project2/project2
$ export FLASK_APP="application.py"

Mena@Mena-PC /cygdrive/d/work/study/project2/project2
$ flask run
Usage: flask run [OPTIONS]

Error: Could not import "application".

Serving Flask-SocketIO app "application.py"
Forcing debug mode off
didnt run at all
it run with CMD but no logging at all

ll-M-ll on 9 Oct 2018

should i run it on windows safe mode ??

ll-M-ll on 9 Oct 2018

iam so tired of trying just to get it to work :S

ll-M-ll on 9 Oct 2018

😕1 👎1

You seem to be having very basic set up problems, more related to Flask than Flask-SocketIO. Unfortunately I cannot help you with details, as aI do not know how your application is structured. If you have the app somewhere I can look at it I can give you some more advice, but really this should not take so much time, you have to point Flask at the application.

I should mention that in the Windows native case, you should use set FLASK_APP=..., not the lowercase flask_app.

miguelgrinberg on 9 Oct 2018

dude literally that is all i have in the code which everyone in my course have it as well but no one with this problem :S

project2.zip

when it run with cgywin >>>>

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ export FLASK_APP="application.py"

Mena@Mena-PC /cygdrive/d/work/study/project2org/project2
$ flask run

when i try it with CMD >>>>>

D:\WORK\study sc5\project2org\project2>flask run

Serving Flask-SocketIO app "application
Forcing debug mode off

it say server is running on 127.0.0.1:5000 if the code doesnt have socket io in it , if it does it only says what i have mentioned above and yes when i visit 127.0.0.1:5000 i see it working but abslout silence if i tried to send anything from socket io

i had a different version as well , no errors at all , it prints anything related to python but none from socket io

app-test.zip

ll-M-ll on 9 Oct 2018

👎1

also when i used inspector tool by chrome and checked the network tab i can see few socket io data moves but within few mins later i get this error i have mentioned above ( that was on windows 10 )

[WinError 10053] An established connection was aborted by the software in your host machine
Sun Oct  7 23:47:57 2018 {'REMOTE_ADDR': '127.0.0.1', 'REMOTE_PORT': '56449', 'HTTP_HOST': '127.0.0.1:5000', (hidden keys: 23)} failed with ConnectionAbortedError

ll-M-ll on 9 Oct 2018

here some videos from my pc to administrate what happen exactly

Bandicam.zip

ll-M-ll on 10 Oct 2018

None of the zip files you attached on this issue are valid.

$ unzip Bandicam.zip
Archive:  Bandicam.zip
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of Bandicam.zip or
        Bandicam.zip.zip, and cannot find Bandicam.zip.ZIP, period.

miguelgrinberg on 10 Oct 2018

it was winrar but the system doesn't allow me to upload winrar
i will try to make them in windows zip file then

ll-M-ll on 10 Oct 2018

here are the videos >>>>

videos.zip

project 2 which all students have - almost empty just have socket io in it
project 2 org.zip

project 2 ( app i was trying to test socket io )

app-test.zip

ll-M-ll on 10 Oct 2018

The problem with app-test.py is that it is not an importable name, the dash is not a valid character for Python modules.

The other problem I said I will investigate once I have access to a Windows machine. Cygwin or the Ubuntu subsystem will (I think) not have have that problem. On the Windows version you may get it to work if you uninstall gevent (I suspect an incompatibility with gevent, but this is just a hunch).

miguelgrinberg on 10 Oct 2018

i don't have gevent installed currently , and i have tested Cygwin , same reaction , it never prints "Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)" basically ignor anything related to socket io

ll-M-ll on 10 Oct 2018

Pretty sure you have either gevent or eventlet installed. The output would be different if you hadn't.

Here is another thing for you to try, in any case. Add the following at the bottom of application.py:

if __name__ == '__main__':
    socketio.run(app)

Then start the application by running:

python application.py

Does that work better?

There is a bug in Flask related to the flask run command that might be causing your problem: https://github.com/pallets/flask/issues/2776.

miguelgrinberg on 10 Oct 2018

i did that ..
it gave no output in CMD put when i ran 127.0.0.1:5000 it prints ( Project 2: TODO )

which is responding to

@app.route("/")
def index():
    return "Project 2: TODO"

ll-M-ll on 10 Oct 2018

hey i uninstalled socketio and tried to reinstall it again i got this

C:\Windows\system32>pip install socketio
Collecting socketio
  Using cached https://files.pythonhosted.org/packages/7e/c9/44c96fdea0802845ac1
a11f5c2b141c9995fb6bc88c66319faeecd3f8624/socketio-0.1.4.zip
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-pac
kages\setuptools\__init__.py", line 12, in <module>
        from setuptools.extension import Extension
      File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-pac
kages\setuptools\extension.py", line 7, in <module>
        from setuptools.dist import _get_unpatched
      File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-pac
kages\setuptools\dist.py", line 16, in <module>
        import pkg_resources
      File "c:\users\mena\appdata\local\programs\python\python37-32\lib\site-pac
kages\pkg_resources.py", line 1479, in <module>
        register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvid
er)
    AttributeError: module 'importlib._bootstrap' has no attribute 'SourceFileLo
ader'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\Mena\App
Data\Local\Temp\pip-install-g0jwmvea\socketio\

ll-M-ll on 10 Oct 2018

It's pip install python-socketio. You installed something else.

miguelgrinberg on 10 Oct 2018

i managed to install both socketio and eventlet
C:\Windows\system32>pip install python-socketio
Requirement already satisfied: python-socketio in c:\users\mena\appdata\local\pr
ograms\python\python37-32\lib\site-packages (2.0.0)
Requirement already satisfied: six>=1.9.0 in c:\users\mena\appdata\local\program
s\python\python37-32\lib\site-packages (from python-socketio) (1.11.0)
Requirement already satisfied: python-engineio>=2.2.0 in c:\users\mena\appdata\l
ocal\programs\python\python37-32\lib\site-packages (from python-socketio) (2.3.1
)
but when i ran the server , same thing happen

ll-M-ll on 10 Oct 2018

anyway i can trace where is this problem coming from ? .. any logging or anything ?

ll-M-ll on 10 Oct 2018

Sorry, but I am very confused. What do you mean by "same thing happen"? You already reported five or six different outcomes, how am I supposed to know which one you are referring to? Does the server work or not?

miguelgrinberg on 10 Oct 2018

i'm sorry as i've mentioned earlier i'm googleing and trying different thing just to help us figure it out
so i tried to remove socket io and eventlet and reinstall them but i ran into a problem i thought it would share it with you maybe it happen because it might be a clue that something is conflicting with socketIo but i managed to resolve them , thanks to u and stackoverflow

now i tried to run the code after the fresh installation i got the same result

D:\Work\study\project2org\project2>flask run
 * Serving Flask-SocketIO app "application.py"
 * Forcing debug mode off

ll-M-ll on 10 Oct 2018

👎1

I believe I told you several times that I need to investigate why this happens when I have access to a Windows machine. There is nothing I can do right now. On the other side, I suggested you try something else that you apparently have ignored: https://github.com/miguelgrinberg/Flask-SocketIO/issues/807#issuecomment-428562995.

miguelgrinberg on 10 Oct 2018

@miguelgrinberg i'm trying other things to get socket Io to work i'm not ignoring it sir.

ll-M-ll on 10 Oct 2018

it would help if there is a way to read loggin from my machine about socket io

ll-M-ll on 10 Oct 2018

👎1

Logging options are documented: https://flask-socketio.readthedocs.io/en/latest/#flask_socketio.SocketIO. This is not going to help you though, your application is hanging before the web server or Socket.IO get a chance to start.

miguelgrinberg on 10 Oct 2018

then maybe logging for python or flask can provide us with a clue of where the smoke is coming from ?

ll-M-ll on 10 Oct 2018

👎1

i have the same problem, it because i install wrong package socketio, and installed dependency setuptools-3.3, that polluted my venv. just uninstall and reinstall setuptools to new version.