Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.
WebSocket
Creates a WebSocket instance for connection to a remote host.
The following events can close the connection:
- remote host close event.
- WebSocket.close().
- k6 VU interruption based on test configuration or CLI commands.
Returns
Example
A k6 script that initiates a WebSocket connection.
import { WebSocket } from 'k6/experimental/websockets';
export default function () {
const ws = new WebSocket('ws://localhost:10000');
ws.onopen = () => {
console.log('WebSocket connection established!');
ws.close();
};
}
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