web-socket | Laravel library for asynchronously serving WebSockets | Socket library
kandi X-RAY | web-socket Summary
kandi X-RAY | web-socket Summary
Laravel library for asynchronously serving WebSockets. Build up your application through simple interfaces and re-use your application without changing any of its code just by combining different components.
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Top functions reviewed by kandi - BETA
- Bootstrap the services .
- Handle the web socket server .
- Register all commands .
- Get the listener stub .
- Get the default namespace .
web-socket Key Features
web-socket Examples and Code Snippets
Lines of Code : 13License : Permissive (MIT License)
Copypublic WebSocket akkaStreamsSocket() {
return WebSocket.Json.accept(
request -> {
Sink in = Sink.foreach(System.out::println);
MessageDTO messageDTO = new MessageDTO("1", "1", "Title", "Test Body");
public static void main(String[] args) throws InterruptedException {
WebSocketClient client = new ReactorNettyWebSocketClient();
client.execute(
URI.create("ws://localhost:8080/event-emitter"),
session -> @Bean
public HandlerMapping webSocketHandlerMapping() {
Map map = new HashMap<>();
map.put("/event-emitter", webSocketHandler);
SimpleUrlHandlerMapping handlerMapping = new SimpleUrlHandlerMapping();
handler Community Discussions
Trending Discussions on web-socket
QUESTION
I have a shinyApp running on cloud that runs for long (lots of computation taking about 25 minutes) leading to timeout. However, If I keep interacting with the page as the app runs (e.g. navigating the navbar or moving a slider..), timeout does not happen. A possible solution is to keep the web-socket active by updating a value on the current page every 5 seconds or so. I borrowed the idea here https://community.rstudio.com/t/keep-shiny-app-running-in-shiny-server-no-greying-out/27784/4.
...ANSWER
Answered 2021-May-26 at 06:29I managed to find a workaround that keeps the R/Shiny web page active even as intensive workloads run in server.R. I would like to share my working solution.
The first step is to create a div tag or object inside shiny's UI, fluidPage() section. I have a assigned "time_stamp" id to it.
QUESTION
ANSWER
Answered 2021-May-23 at 09:58The USD price of an asset is not part of the official Binance API, and it's based on a proprietary algorithm.
If an approximate number is sufficient for you, you can:
- Look for a USD stablecoin quote pair - ETH_BUSD, ETH_USDT (links to API endpoints). The exchangeInfo endpoint shows all active pairs so that you can filter
ETHand search for other pairs manually. - For base assets that do not have pairs with USD stablecoins (for example
EZat the moment), you can find their price in BTC using the EZ_BTC param, and then convert this price to USD stablecoin using the BTC_USDT param.
Mind that the price of USD stablecoins is not always exactly $1.00 and is usually fluctuating up to 0.5% around this number (so sometimes 1 USDT costs $0.995 and sometimes $1.005). That's why I'm highlighting the "approximate number" above.
If you need more precise number and really get the USD (not the USD stablecoin) price, I'd recommend searching for unofficial APIs in the Network section of your browser devtools bar while browsing Binance. They might have an (unofficial) endpoint that shows the current price of USD stablecoins in USD, or even the current USD (not stablecoin) price of an asset such as ETH.
Also the Coinmarketcap API offers USD price computed using a proprietary algorithm. But then these numbers from CMC might differ from the numbers displayed on Binance because they might be calculated using a different algorithm or from different inputs (including more exchanges, aggregated from a different time period, ...).
QUESTION
I'm following instructions (here) to mirror multiple orderbooks on Binance Exchange on my local machine.
Suppose for simplicity, I wish to mirror orderbooks for 2 symbols: ETHBTC and DOGEBTC (in reality it's 350+).
First I have to buffer the websocket order-update streams:
- wss://stream.binance.com:9443/stream?streams=ETHBTC@depth@100ms
- wss://stream.binance.com:9443/stream?streams=DOGEBTC@depth@100ms
Now I have to download snapshots:
- https://api.binance.com/api/v3/depth?symbol=ETHBTC&limit=1000
- https://api.binance.com/api/v3/depth?symbol=DOGEBTC&limit=1000
As soon as I have the snapshots, I apply the buffer (which is ongoing) to them, yielding a STATE.
After that, all order-updates can simply be applied to the state.
For the updates stream I can do:
...ANSWER
Answered 2021-May-14 at 08:37Answer thanks to graingert on IRC Freenode #python 🙏
QUESTION
I'm following instructions here.
Effectively the problem boils down to this:
...ANSWER
Answered 2021-May-12 at 21:08Python loops are generally slow. Numpy can barely help ere because the code is mostly sequential and the merge is not a generic one. You can do that with Numba and by replacing the slow list appends by direct assignments of a temporary pre-allocated array:
QUESTION
Binance offers Web Socket Streams with several functions such as Aggregate Streams, Trade Streams, Kline/Candlestick Streams, etc. that you can see here https://github.com/binance/binance-spot-api-docs/blob/master/web-socket-streams.md
I'm looking to get the current price & last 24h % change of my selected coins and I can't understand how do I manage to get this information. The prices must be in real time, the 24h % change can be called every 60 seconds or something.
I'm currently using CoinCap https://docs.coincap.io/ and it's pretty easy:
- To get the 24h % I call the endpoint
https://api.coincap.io/v2/assets?ids=bitcoin,ethereum - To get the prices in real time I call the endpoint
wss://ws.coincap.io/prices?assets=bitcoin,ethereum
The problem with CoinCap is that I can't filter the prices with the exchange that I want, which in this case is Binance. So I keep getting prices that do not match the Binance.
...ANSWER
Answered 2021-Feb-13 at 18:37You can use miniTicker. https://binance-docs.github.io/apidocs/spot/en/#individual-symbol-mini-ticker-stream. The last price would be in c, 24h ago the price would be in o.
QUESTION
Created a nest js websocket and trying to connect to that from angular app version 11. Not able to connect to socket from angular 11. I am using latest version of socket.io-client.
In websocket server log says connect and disconnects.
nest js websocket file:
...ANSWER
Answered 2021-Apr-25 at 14:33I am using latest version of socket.io-client.
I believe you're using socketIO client v4. (If you're working with v3, the following would still be true)
Based on NestJS Websocket documentation, the NestJS socketIO server is still in v2.
@nestjs/platform-socket.io currently depends on socket.io v2.3 and socket.io v3.0 client and server are not backward compatible. However, you can still implement a custom adapter to use socket.io v3.0. Please refer to this issue for further information.
If you check the version compatibility, you will see that socketIO server v2 is not compatible with socketIO client v4.
However, socketIO server v3 is compatible with socketIO client v4. So I believe you can take a look into this issue (as mentioned in NestJS docs) and try to convert your NestJS socketIO server to support socketIO client v3. Hopefully, that would also support socketIO client v4 as well. (I didn't test this though!)
Hope this helps you. Cheers 🍻 !!!
QUESTION
I had missed .as_asgi() when defining routes for my websockets, meaning each instance I created was overwritten by the next one I made.
My routing.py now looks like:
...ANSWER
Answered 2021-Apr-21 at 12:55I had missed .as_asgi() when defining routes for my websockets, meaning each instance I created was overwritten by the next one I made.
My routing.py now looks like:
QUESTION
Have an issue that I'm trying to figure out with Apexcharts.
just to lead with, I cant really post an example as the chart code is somewhat large and relies an web-sockets to get the data so I'm going to try my best to explain the flow with hopes somebody may know what I'm doing wrong here, I apologies in advance.
The flow of the application is
User can view the results of a survey ( this is using apex charts ). This is a modal window that opens and builds an on-the-fly popup that contains the chart div e.g
...
ANSWER
Answered 2021-Mar-28 at 18:08Ok, just in-case anyone else runs into this issue I was able to get this resolved.
Basically in our code we were reusing a variable, then rendering the chart however by doing so the original chart object was not getting destroyed before creating the new one. ( maybe this apex charts should catch this as one would think chartID would be unique and when creating a new chart it would look for the chartID first, before creating a new object )
Anyhow we moved this to be their own dynamic variables so we can check if the chart is there first and alway destroy that object before creating a new one.
QUESTION
I am sending data to a front-end (React component) using Django and web-sockets. When I run the app and send the data from my console everything works. When I use a button on the front-end to trigger a Django view that runs the same function, it does not work and generates a confusing error message.
I want to be able to click a front-end button which begins sending the data to the websocket.
I am new to Django, websockets and React and so respectfully ask you to be patient.
Overview- Django back-end and React front-end connected using Django Channels (web-sockets).
- User clicks button on front-end, which does
fetch()on Django REST API end-point. - [NOT WORKING] The above endpoint's view begins sending data through the web-socket.
- Front-end is updated with this value.
The error Traceback is long, so it is included at the end of this post. It begins with:
Internal Server Error: /api/run-create
And ends with:
What I've Tried Sending Data Outside The Django ViewConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host
- The function below sends data to the web-socket.
- Works perfectly when I run it in my console - front-end updates as expected.
- Note: the same function causes the attached error when run from inside the Django view.
ANSWER
Answered 2021-Mar-17 at 23:45Rather than creating a new connection from same server to itself , I'd suggest you to use the get_channel_layer utitlity .Because you are in the end increasing the server load by opening so many connections . Once you get the channel layer , you can simply do group send as we normally do to send evnets . You can read more about here
QUESTION
Is there a way to run some code each time a ktor websocket receives a new message, kind of like onTouchEvent in Android views?
Currently I check for new messages and process them in a while loop as follows:
...ANSWER
Answered 2021-Mar-15 at 16:22You can use consumeEach method of the incoming frames channel to run some code when a frame is received:
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