web-socket | A Polymer element to ease the use and configuration | Web Framework library

I'm not sure how to call this number in red-circle. I want to get it. I try to read restful api document & web-socket api from binance but response value doesn't contain this or maybe I miss somethings.

So how to get this number ? thank you.

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:

I'm following instructions here.

Effectively the problem boils down to this:

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:

1. To get the 24h % I call the endpoint https://api.coincap.io/v2/assets?ids=bitcoin,ethereum
2. 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.

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:

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:

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

1. 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

   ...

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.

1. Django back-end and React front-end connected using Django Channels (web-sockets).
2. User clicks button on front-end, which does fetch() on Django REST API end-point.
3. [NOT WORKING] The above endpoint's view begins sending data through the web-socket.
4. 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:

ConnectionResetError: [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.

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: