use Lightstreamer Server with Node WebSocket only as Client? - node.js

Question

Hello for some reasons i don't like to use the libs from Lightstreamer for example debugging with Charles Webproxy or sending raw text commands.
I get a connection to the server, but i fail after sending any command.
I used this https://demos.lightstreamer.com/HelloWorld/ and try make me a Node/TS version of it.
I send from the example the first string which is "wsok" and all what i get from server is (1011) Cannot continue due to an unexpected error.
My problem must be related to sending the message because without the connection is work.
http://192.168.185.24:8888 is my Charles Webdebugging.
import * as WebSocket from 'ws';
var url = require('url');
var HttpsProxyAgent = require('https-proxy-agent');
class sg{
ws:WebSocket;
constructor(){
var headers = {};
headers["Host"] ="push.lightstreamer.com";
headers["User-Agent"] ="Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0";
headers["Accept"] ="*/*";
headers["Accept-Language"] ="de,en-US;q=0.7,en;q=0.3";
headers["Accept-Encoding"] ="gzip, deflate, br";
headers["Sec-WebSocket-Version"] ="13";
headers["Origin"] ="https://demos.lightstreamer.com";
headers["Sec-WebSocket-Protocol"] ="TLCP-2.2.0.lightstreamer.com";
headers["Sec-WebSocket-Extensions"] ="permessage-deflate";
headers["Sec-WebSocket-Key"] ="a key==";
headers["Connection"] ="keep-alive, Upgrade";
headers["Sec-Fetch-Dest"] ="websocket";
headers["Sec-Fetch-Mode"] ="websocket";
headers["Sec-Fetch-Site"] ="same-site";
headers["Pragma"] ="no-cache";
headers["Cache-Control"] ="no-cache";
headers["Upgrade"] ="websocket";
var options = url.parse('http://192.168.185.24:8888');
var agent = new HttpsProxyAgent(options);
this.ws = new WebSocket("wss://push.lightstreamer.com/lightstreamer", ["js.lightstreamer.com", "websocket"], {
headers, agent: agent, rejectUnauthorized: false
});
this.ws.onopen = (e) => {
console.log("open")
setTimeout(() => {
this.ws.send(`wsok`);
}, 1500);
};
this.ws.onmessage = (e) => {
console.log(e)
}
this.ws.onerror = error => {
console.log(`WebSocket error: ${error}`)
}
}
}
let xsg = new sg();

Answer 1

You are not using the object WebSocket correctly.
Try this instead:
ws = new WebSocket("wss://push.lightstreamer.com/lightstreamer", "TLCP-2.2.0.lightstreamer.com")
ws.onopen = (e) => {
console.log("open")
ws.send("wsok")
}
For the rest, you must look at the TLCP Specification document, the section Hands on in particular.