WebSocket Tester

const socket = new WebSocket("wss://ws.postman-echo.com/raw");

socket.addEventListener("open", (event) => {
  console.log("WebSocket connected:", event);
  socket.send(JSON.stringify({ type: "ping", timestamp: Date.now() }));
});

socket.addEventListener("message", (event) => {
  console.log("Message received from server:", event.data);
});

socket.addEventListener("close", (event) => {
  console.log("WebSocket connection closed:", event.code, event.reason);
});

socket.addEventListener("error", (error) => {
  console.error("WebSocket error:", error);
});

import WebSocket from 'ws';

const ws = new WebSocket('wss://ws.postman-echo.com/raw');

ws.on('open', function open() {
  console.log('Connected to server');
  ws.send('{"action":"subscribe","channel":"feed"}');
});

ws.on('message', function message(data) {
  console.log('Received: %s', data);
});

ws.on('error', console.error);

import asyncio
import websockets

async def listen():
    uri = "wss://ws.postman-echo.com/raw"
    async with websockets.connect(uri) as websocket:
        await websocket.send('{"type": "greeting"}')
        while True:
            response = await websocket.recv()
            print(f"Received: {response}")

asyncio.run(listen())