websockets | Library for building WebSocket servers and clients in Python | Websocket library

 by   aaugustin Python Version: 11.0.3 License: BSD-3-Clause

kandi X-RAY | websockets Summary

kandi X-RAY | websockets Summary

websockets is a Python library typically used in Networking, Websocket applications. websockets has no bugs, it has build file available, it has a Permissive License and it has medium support. However websockets has 2 vulnerabilities. You can install using 'pip install websockets' or download it from GitHub, PyPI.

Library for building WebSocket servers and clients in Python
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    Quality
      Security
        License
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            kandi-support Support

              websockets has a medium active ecosystem.
              It has 4473 star(s) with 473 fork(s). There are 107 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 22 open issues and 963 have been closed. On average issues are closed in 12 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of websockets is 11.0.3

            kandi-Quality Quality

              websockets has 0 bugs and 0 code smells.

            kandi-Security Security

              websockets has 2 vulnerability issues reported (0 critical, 1 high, 1 medium, 0 low).
              websockets code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              websockets is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              websockets releases are not available. You will need to build from source code and install.
              Deployable package is available in PyPI.
              Build file is available. You can build the component from source.

            Top functions reviewed by kandi - BETA

            kandi has reviewed websockets and discovered the below as its top functions. This is intended to give you an instant insight into websockets implemented functionality, and help decide if they suit your requirements.
            • Builds a handshake
            • Get all values for the given key
            • Process Sec - WebSocket - Extensions headers
            • Parse Sec - WebSocket - Extensions header
            • Parse the stream
            • Fail the websocket connection
            • Discard the stream
            • Load a module
            • Import a module
            • Parse an ExtensionHeader
            • Handle a request
            • Process incoming events
            • Increment the counter
            • Format a log record
            • Start the server
            • Serve html content
            • Start a client
            • Parse a Subprotocol item
            • Publish an event
            • Register the connection to the server
            • Connect to the websocket
            • Parse the response
            • Broadcast method
            • Connect to uri
            • Test if a single input is valid
            • Handle authentication
            Get all kandi verified functions for this library.

            websockets Key Features

            No Key Features are available at this moment for websockets.

            websockets Examples and Code Snippets

            Debugging the Websockets
            Pythondot img1Lines of Code : 35dot img1License : Non-SPDX (NOASSERTION)
            copy iconCopy
            LOGGING['loggers']['channels_redis.core'] = {
                'handlers': ['console', 'file', 'tower_warnings'],
                'level': 'DEBUG'
            }
            
            tail -f /var/log/tower/tower.log
            2021-04-28 20:53:51,230 INFO     channels_redis.core 1 of 4 channels over capacity in group   
            WebSockets-Handling disconnections and multiple clients
            Pythondot img2Lines of Code : 5dot img2License : Permissive (MIT)
            copy iconCopy
            {!../../../docs_src/websockets/tutorial003.py!}
            
            Client #1596980209979 left the chat
            
            But have in mind that, as everything is handled in memory, in a single list, it will only work while the process is running, and will only work with a single proces  
            WebSockets-Using Depends and others
            Pythondot img3Lines of Code : 2dot img3License : Permissive (MIT)
            copy iconCopy
            {!../../../docs_src/websockets/tutorial002.py!}
            
            You can use a closing code from the valid codes defined in the specification.
              
            Python - Async callback/receiver for WebSocket
            Pythondot img4Lines of Code : 21dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            async for websocket in websockets.connect(...):
                try:
                    ...
                except websockets.ConnectionClosed:
                    continue
            
            my_websocket = None
            
            async for websocket in websockets.connect('ws://localhost:8000/upda
            How to run multiple websocket API calls concurrently?
            Pythondot img5Lines of Code : 12dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            def run(call_api, msg):
                asyncio.get_event_loop().run_until_complete(call_api(json.dumps(msg)))
            
            run(call_dapi, dmsg)
            run(call_oapi, omsg)
            
            async def main():
                await asyncio.create_task(call_dapi(json.dumps(dms
            Display Live Video from bytes coming from websocket in Flutter
            Pythondot img6Lines of Code : 137dot img6License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import websockets
            import asyncio
            
            import cv2, base64
            
            print("Started server on port : ", port)
            
            async def transmit(websocket, path):
                print("Client Connected !")
                try :
                    cap = cv2.VideoCapture(0)
            
                    while cap.isOpened():
            PIP failed to build package cytoolz
            Pythondot img7Lines of Code : 4dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            python -m pip install --user cython
            python -m pip install --user cytoolz
            python -m pip install --user eth-brownie
            
            Unable to fetch model data in Django Async conusmers . working in channels and websockets
            Pythondot img8Lines of Code : 11dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            @sync_to_async
                def save_message(self , message , username, roomId , roomName ) :
                    username = username[1:-1]
                    roomName = roomName[1:-1]
                    user = User.objects.get(username = str(username))
                    room = ChatRoom.obje
            Asyncronous Threading Python OCPP
            Pythondot img9Lines of Code : 68dot img9License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            async def main():
                async with websockets.connect(
                    'ws://localhost:9000/CP_1',
                    subprotocols=['ocpp1.6']
                ) as ws:
            
                    cp = ChargePoint('CP_1', ws)
            
                    await asyncio.gather(cp.start(), cp.send_boot_notificatio
            WebSocket not working when trying to send generated answer by keras
            Pythondot img10Lines of Code : 6dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            while True:
                question = input("")
                ints = predict(question)
                answer = response(ints, json_data)
                print(answer)
            

            Community Discussions

            QUESTION

            PIP failed to build package cytoolz
            Asked 2022-Mar-26 at 18:26

            I'm trying to install eth-brownie using 'pipx install eth-brownie' but I get an error saying

            ...

            ANSWER

            Answered 2022-Jan-02 at 09:59

            I used pip install eth-brownie and it worked fine, I didnt need to downgrade. Im new to this maybe I could be wrong but it worked fine with me.

            Source https://stackoverflow.com/questions/69875694

            QUESTION

            Not able to connect to websocket using Nginx and Uvicorn
            Asked 2022-Mar-26 at 10:20

            I built a docker container with Django, Uvicorn, Nginx and Redis, and am using django-channels but when I run this it says it cannot connect to the websocket and this is seen in the browser console:

            WebSocket connection to 'ws://127.0.0.1:8080/ws/notifications/' failed

            It is working fine when I use Django's runserver command for development but when I include Nginx and Uvicorn it breaks.

            Entrypoint.sh:

            ...

            ANSWER

            Answered 2022-Mar-26 at 10:20

            As noted in a comment by Iain Shelvington, it seems like websockets are not included in the base install of uvicorn

            Source https://stackoverflow.com/questions/68828128

            QUESTION

            SignalR CORS issue with Angular and .NET Core
            Asked 2022-Mar-10 at 08:45

            I know there are a lot of questions and answeres regarding this topic out there, but nothing matched my specific issue.

            I am using the following versions

            • Angular 10.0.14
              • @aspnet/signalr 1.0.27
            • ASP.NET Core 3.1

            VERSION UPDATE:

            • I just replaced @aspnet/signalr 1.0.27 by @microsoft/signalr 5.0.11 -> same issue.

            The SignalR connection works pretty fine until I add an accessTokenFactory in the Angular frontend.

            Frontend

            ...

            ANSWER

            Answered 2021-Oct-19 at 12:06

            Browsers do not support headers for websockets, therefore the bearer token has to be added as query string parameter. We hit the maximum length for URLs due to the length of our bearer token. We could shorten our token or use a reference token, see also: https://github.com/aspnet/SignalR/issues/1266

            Hope this helps others as well.

            Source https://stackoverflow.com/questions/69628049

            QUESTION

            .NET 6.0: new Blazor project throws Websocket error
            Asked 2022-Feb-26 at 12:07

            I am running currently a webserver with ASP.NET Core 3.1 and a Blazor project. Recently when upgrading to .NET 6.0 I encountered (even with a blank Blazor project) some problems with a websocket error message in the browser only when deployed on my webserver (see message below).

            Locally (on Windows 11 x64, VS 22 Preview 4) there are no error messages...

            Webserver: Debian 10 x64, .NET 6.0 SDK installed, running on NGINX with websockets enabled (reverse proxy).

            Do I miss out on something or is it a problem with the current state of .NET 6.0 and NGINX? I already tried to access the webpage locally on the debian server and the same error message occurs.

            Help would be much appreciated!

            Greetings!

            Error messages within order:

            ...

            ANSWER

            Answered 2022-Feb-26 at 12:07

            Here is the solution described again, maybe a little bit more convenient:

            To fix this problem, I changed in the site-configuration (/etc/nginx/sites-available) of nginx the following variables:

            Source https://stackoverflow.com/questions/70937709

            QUESTION

            WebSocket not working when trying to send generated answer by keras
            Asked 2022-Feb-17 at 12:52

            I am implementing a simple chatbot using keras and WebSockets. I now have a model that can make a prediction about the user input and send the according answer.

            When I do it through command line it works fine, however when I try to send the answer through my WebSocket, the WebSocket doesn't even start anymore.

            Here is my working WebSocket code:

            ...

            ANSWER

            Answered 2022-Feb-16 at 19:53

            There is no problem with your websocket route. Could you please share how you are triggering this route? Websocket is a different protocol and I'm suspecting that you are using a HTTP client to test websocket. For example in Postman:

            Postman New Screen

            HTTP requests are different than websocket requests. So, you should use appropriate client to test websocket.

            Source https://stackoverflow.com/questions/71099818

            QUESTION

            How to give certificate to Java Websocket?
            Asked 2022-Jan-20 at 10:33

            Forgive me for the newb question, but I am confused and obviously not understanding the fundamentals or explanations of how to use a Websocket server hosted over HTTPS. Everything I find online leads me to have more questions than answers.

            I have a Websocket server hosted on my HTTPS website using Java code.

            This is my WebsocketServer.java file:

            ...

            ANSWER

            Answered 2022-Jan-13 at 14:50

            Keep it easy.
            Certs inside your application are complex - they are hard to manage and you will get problems to run your application in a modern cloud environment (start new environments, renew certs, scale your application, ...).

            Simple conclusion: Dont implement any certs.

            How-to get encrypted connections?

            As Mike already pointed out in the comments: WebSockets are just upgraded HTTP(S) connections. A normal webserver (nginx, apache) takes care about the certs. It can be done in kubernetes (as ingress-controller) or with a "bare-metal" webserver.
            Both of them should act as a reverse-proxy. This means: Your java-application doesn't know anything about certs. It has just unencrypted connections - like in your code on port 6868.
            But the client will not use this port. 6868 is only internally reachable.

            The client will call your reverse-proxy at the normal HTTPS port (=443). The reverse-proxy will forward the connection to your java-application.

            Here some links for further information:

            Source https://stackoverflow.com/questions/70654559

            QUESTION

            Push local WebRTC stream to a NodeJS server in the cloud
            Asked 2021-Dec-16 at 06:33

            I have a task, but I can't seem to get it done. I've created a very simple WebRTC stream on a Raspberry Pi which will function as a videochat-camera. With ionic I made a simple mobile application which can display my WebRTC stream when the phone is connected to the same network. This all works.

            So right now I have my own local stream which shows on my app. I now want to be able to broadcast this stream from my phone to a live server, so other people can spectate it.

            I know how to create a NodeJS server which deploys my webcam with the 'getUserMedia' function. But I want to 'push' my WebRTC stream to a live server so I can retrieve a public URL for it.

            Is there a way to push my local Websocket to a live environment? I'm using a local RTCPeerConnection to create a MediaStream object

            ...

            ANSWER

            Answered 2021-Dec-10 at 16:54

            Is there a way to push my local Websocket to a live environment?

            It's not straightforward because you need more than vanilla webrtc (which is peer-to-peer). What you want is an SFU. Take a look at mediasoup.

            To realize why this is needed think about how the webrtc connection is established in your current app. It's a negotiation between two parties (facilitated by a signaling server). In order to turn this into a multi-cast setup you will need a proxy of sorts that then establishes separate peer-to-peer connections to all senders and receivers.

            Source https://stackoverflow.com/questions/70260437

            QUESTION

            Intercept WebSocket messages
            Asked 2021-Dec-09 at 17:16

            With ajax requests it can be done with this code:

            ...

            ANSWER

            Answered 2021-Dec-09 at 17:16
            Intro

            The question/bounty/op is specifically asking for a reputable source. Instead of rolling a custom solution, my proposal is that a known proven library should be used - that has been used, audited, forked, and in general used by the community and that is hosted on github.

            The second option is to roll your own (though not recommended) and there are many exccelent answers on how to do it involving the addEventListener

            wshook

            Wshook is a library (hosted on github) that allows to easily intercept and modify WebSocket requests and message events. It has been starred and forked multiple times.

            Disclaimer: I don't have any relationship with the specific project.strong text

            Example:

            Source https://stackoverflow.com/questions/70205816

            QUESTION

            Webflux, with Websocket how to prevent subscribing twice of reactive redis messaging operation
            Asked 2021-Nov-29 at 18:46

            I have a websocket implementation using redis messaging operation on webflux. And what it does is it listens to topic and returns the values via websocket endpoint.

            The problem I have is each time a user sends a message via websocket to the endpoint it seems a brand new redis subscription is made, resulting in the accumulation of subscribers on the redis message topic and the websocket responses are increased with the number of redis topic message subscribtions as well (example user sends 3 messages, redis topic subscriptions are increased to three, websocket connection responses three times).

            Would like to know if there is a way to reuse the same subscription to the messaging topic so it would prevent multiple redis topic subscriptions.

            The code I use is as follows:

            • Websocket Handler

              ...

            ANSWER

            Answered 2021-Nov-29 at 18:46

            Instead of using ReactiveRedisOperations, MessageListener is the way to go here. You can register a listener once, and use the following as the listener.

            Source https://stackoverflow.com/questions/70051118

            QUESTION

            Direct buffer memory OutOfMemoryError after updating to wildfly 18
            Asked 2021-Nov-18 at 11:04

            After updating the environment from Wildfly 13 to Wildfly 18.0.1 we experienced an

            ...

            ANSWER

            Answered 2021-Nov-05 at 14:19

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            aaugustin websockets version 4 contains a CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Servers and clients, unless configured with compression=None that can result in Denial of Service by memory exhaustion. This attack appear to be exploitable via Sending a specially crafted frame on an established connection. This vulnerability appears to have been fixed in 5.

            Install websockets

            You can install using 'pip install websockets' or download it from GitHub, PyPI.
            You can use websockets 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.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            Install
          • PyPI

            pip install websockets

          • CLONE
          • HTTPS

            https://github.com/aaugustin/websockets.git

          • CLI

            gh repo clone aaugustin/websockets

          • sshUrl

            git@github.com:aaugustin/websockets.git

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