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

NICE CXone API & Integrations
1

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?

2

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
3

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.