How to parse websites using web socket technology?

Question

Parsing

I am engaged in collection of open data.
The sites below are powered by web socket technology.

• https://dallas.tx.publicsearch.us/
  
• https://denton.tx.publicsearch.us/
  
• bexar.tx.publicsearch.us
  

Has anyone encountered parsing on a similar technology? If yes, I will be grateful if you send articles or projects.
So far I don't know how to do it.

Answer 1

const WebSocket = require('ws');

const ws = new WebSocket('wss://dallas.tx.publicsearch.us/ws', {
  headers: {
    "Origin": "https://dallas.tx.publicsearch.us",
    "Cookie": "authToken=51f69ac5-67c5-41ac-8943-cace7ebc6b3c; authToken.sig=x9S_G8Lwy6KHaB2Ek4PT1PR7jhE;"
  }
});

ws.on('open', () => {
  console.log('Соединение открыто');
});

ws.on('close', (code, reason) => {
  console.log('Соединение закрыто', code, reason);
});

all sites will have their own cockroaches) for example, in what I threw off above. You must pass Origin and Cookie in the request header . If everything is clear with the first, then the first problem will be with cookies. As I understand it, they can be obtained by making a regular GET request to the main one. These cookies will be sent to you in Response Headers

https://www.npmjs.com/package/ws
After a successful connection, do not forget to send pings later) You can already see the ping format in the Network tab in the browser