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⚠️ This is the archived documentation for k6 v0.45. Go to the latest version.

WebSocket.onpong

A handler for a WebSocket connection pong event. For multiple, simultaneous event handlers, use WebSocket.addEventListener().

Example

A k6 script that initiates a WebSocket connection and setups a handler for the pong event.

example-websocket-onpong.js
import { WebSocket } from 'k6/experimental/websockets';
export default function () {
const ws = new WebSocket('ws://localhost:10000');
ws.onpong = () => {
console.log('A pong happened!');
};
}

The preceding example uses a WebSocket echo server, which you can run with the following command:

$ docker run --detach --rm --name ws-echo-server -p 10000:8080 jmalloc/echo-server