flask-sockets | Alternative https | Websocket library
kandi X-RAY | flask-sockets Summary
kandi X-RAY | flask-sockets Summary
[DEPRECATED] Alternative: https://github.com/miguelgrinberg/flask-sock
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flask-sockets Key Features
flask-sockets Examples and Code Snippets
Lines of Code : 11License : Non-SPDX (NOASSERTION)
Copypip3 install pyserial [bluepy] [python-chess] [Pillow]
git clone https://github.com/domschl/python-mchess
cd mchess/engines
{
"name": "stockfish",
"path": "/usr/bin/stockfish",
"active": true
}
pip3 install flask flask-sockets gevent
cd mc Community Discussions
Trending Discussions on flask-sockets
QUESTION
I am using RxPY to enable sending push based events via websockets. I am using flask-sockets in a Flask server with gevent. The events class contains an rx.subject.BehaviorSubject that acts as an event publisher, while the websocket clients subscribe to changes.
ProblemI want to be able to detect when a client is disconnected so I could properly dispose the resources. The problem is when the socket is disconnected and ws.send throws an exception but it's inside the lambda.
Is there a way to pass the exception to the parent function instead?
An alternative solution would be to detect the websocket disconnect without calling ws.send and that could be checked outside the lambda, though I could not find such method in the flask-sockets library.
ANSWER
Answered 2019-Dec-17 at 16:18I have found a workaround, detecting the socket disconnect event using a gevent timeout method like this:
QUESTION
The issue should be reproducible with the following two minimal examples:
Minimal example with app.run()
ANSWER
Answered 2019-Jun-24 at 22:29It should work like that, but it's a bug in WebSocketHandler from the geventwebsocket module which has already been reported: https://gitlab.com/noppo/gevent-websocket/issues/16
QUESTION
I'm interested in creating bidirectional exchange between Flask server and client. Seems that websockets are very convinient for achieving my goal. But i stucked on implementation. I've created simple Flask app with Flask-SocketIO like described in docs:
...ANSWER
Answered 2019-Jun-01 at 21:52flask sokets.io actually are not a websockets, they are SocketsIO. If one wants to integrate real WebSocket in his flask application he could use this project.
QUESTION
I'm trying to make a Flask app that uses WebSockets. The example from Flask-sockets works but how would I send a message from a regular view?
Similarly to how Flask-SocketIO use .emit() and .send()-methods.
In the example below (from the Flask-Sockets example) I would for instance like to be able to broadcast a message from the hello-view.
ANSWER
Answered 2017-Nov-28 at 07:33You can use a global socket list of all client. Traverse all list and send message to all ws instance.
Example code;
QUESTION
I need to send a pickled python dictionary containing several, large Pandas Dataframes over a websocket (Python API at both ends). To improve performance, I would like to compress the pickled object before sending it over the websocket. However, when doing this, the received message is always None.
Client:
...ANSWER
Answered 2017-Jun-08 at 15:09To send binary data in Python 2.7, you must set binary=True in the client (ws4py):
QUESTION
First important point for me: I want to implement websockets. I do not need the fallback options of socketIO.
I would like "my clients" to implement whatever they want, as soon as they stay to the websockets protocol. Namely something like: var ws = new WebSocket.
So.. if the server is Flask-SocketIO, will a simple js WebSocket work?
ADDIONAL NOTES: Python first! I am trying to set up a server which will respond only (actually only send) to websockets, no web page associated. (Yes, I am fine with WS and I do not need WSS, in case you ask ;) ). I had a try on the server side with flask-sockets https://github.com/kennethreitz/flask-sockets but it is giving me some problems. Like closing immediately the connection and beside many similar problems on the web I could not find a solution. Hard to debug too. So before I start developing a new server...
...ANSWER
Answered 2017-Mar-01 at 20:08Sadly no, you cannot use a Socket.IO server with plain WebSocket clients. Sorry, that's not what Flask-SocketIO was made for.
(in case this isn't clear, this is the author of Flask-SocketIO speaking)
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install flask-sockets
You can use flask-sockets like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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