Node.js Genesys Cloud Notifications WebSocket to Kafka consumer timeout issue

I’ve spent hours trying to figure out why my Node.js service keeps dropping the WebSocket connection to Genesys Cloud Notifications after about 30 minutes of idle time, even though I am sending regular pings. I am building a Laravel backend that needs to stream analytics events into a Kafka topic for real-time dashboards, but the PHP process is blocking, so I spun up a separate Node.js worker to handle the WebSocket subscription and push payloads to Kafka via kafkajs.

Here is my subscription setup using the official genesys-cloud-node-sdk:

const client = new PlatformClient();
client.init({
 clientId: process.env.GC_CLIENT_ID,
 clientSecret: process.env.GC_CLIENT_SECRET
});

client.notifications().subscribe(
 'analytics:events',
 (event) => {
 console.log('Received event:', event.topic);
 producer.send({
 topic: 'gc-analytics',
 messages: [{ value: JSON.stringify(event) }]
 });
 },
 (err) => {
 console.error('Subscription error:', err);
 }
);

The initial connection works fine and I see events flowing. However, after a period of no events, the connection drops silently. I am handling reconnection logic in Laravel, but the Node process exits unexpectedly. Is there a specific keep-alive configuration I am missing in the SDK or do I need to manually manage the WebSocket lifecycle? How do I prevent the WebSocket from closing due to inactivity when using the Node SDK for streaming analytics?

It depends, but generally… the issue stems from incorrect WebSocket keep-alive handling in the Node.js client rather than a server-side timeout. The Genesys Cloud Notifications API expects strict adherence to the WebSocket protocol heartbeat. If your ws library instance is not explicitly configured to handle ping/pong frames correctly, the server will terminate the connection after inactivity, regardless of your application-level pings. You need to ensure the underlying WebSocket implementation automatically responds to server pings. Here is the corrected initialization pattern using the standard ws package, ensuring handleProtocols and automatic pong handling are active.

import WebSocket from 'ws';

const ws = new WebSocket('wss://api.mypurecloud.com/api/v2/notifications', {
 headers: {
 'Authorization': `Bearer ${accessToken}`,
 'User-Agent': 'NodeJS-Kafka-Bridge/1.0'
 }
});

ws.on('open', () => {
 console.log('WebSocket Connected');
 // Subscribe to analytics events
 ws.send(JSON.stringify({
 eventType: 'ANALYTICS_CONVERSATION_EVENT',
 // Add other filters
 }));
});

ws.on('ping', (data) => {
 ws.pong(data); // Critical: Respond to server ping
});

ws.on('message', (data) => {
 // Push to Kafka
 kafkaProducer.send({ topic: 'gc-analytics', messages: [{ value: data }] });
});

• WebSocket ping/pong frame handling
• Genesys Cloud Notifications subscription limits
• Node.js ws package configuration
• Kafka producer batch accumulation settings

Have you tried switching to httpx with exponential backoff instead of maintaining that fragile WebSocket? The GC Notifications API is notoriously unstable for long-lived connections, and your Node.js worker is likely hitting hidden rate limits or connection drops that ws doesn’t handle gracefully.

the kafka route is risky for real-time dashboard latency if you’re not careful with consumer group rebalancing, but the immediate drop is definitely the WebSocket handshake. i’ve seen this exact 30-minute cutoff in our queue analytics pipelines. the issue isn’t just the ping/pong frames; it’s that Genesys Cloud validates the subscription token on every reconnection attempt, and if your node worker holds onto an expired JWT, the server silently drops the socket without sending a close frame.

you need to ensure your ws client is configured to handle close events gracefully and immediately refresh the OAuth token before attempting to reconnect. also, don’t rely on the default ws library’s internal ping handling alone. you should implement an application-level heartbeat that checks the subscription status.

here’s a snippet that worked for our team when we migrated from polling to WebSocket for real-time ACD stats. note the explicit on('close') handler that triggers a token refresh:

const WebSocket = require('ws');
const { platformClient } = require('@genesyscloud/genesyscloud');

let ws;

function connectNotifications() {
 ws = new WebSocket('wss://api.mypurecloud.com/api/v2/analytics/events/subscriptions', [], {
 headers: {
 'Authorization': `Bearer ${getValidAccessToken()}` // Ensure this fetches a fresh token
 }
 });

 ws.on('open', () => {
 console.log('Connected to Genesys Cloud Notifications');
 });

 ws.on('message', (data) => {
 // Push to Kafka here
 kafkaProducer.send({ topic: 'gc-analytics', messages: [{ value: data }] });
 });

 ws.on('close', (code, reason) => {
 console.warn(`Disconnected: ${code} ${reason}`);
 // Critical: Refresh token before reconnecting
 refreshOAuthToken().then(() => {
 setTimeout(connectNotifications, 2000); // Exponential backoff recommended
 });
 });
}

if you skip the token refresh in the close handler, you’ll get stuck in a loop of failed handshakes. also, check your Kafka consumer commit strategy. if you’re committing offsets synchronously, you might block the event loop and miss the pong window.

jwt expiry is definitely the culprit here. set your refresh timer to 5 minutes before the token actually dies, otherwise the server cuts the socket before you even realize it.