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DocumentationGrafana k6JavaScript APIk6/wsSocketSocket.send(data)
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Socket.send(data)

Note

A module with a better and standard API exists.

The new k6/experimental/websockets API partially implements the WebSockets API living standard.

When possible, we recommend using the new API. It uses a global event loop for consistency with other k6 APIs and better performance.

Send a data string through the connection. You can use JSON.stringify to convert a JSON or JavaScript values to a JSON string.

ParameterTypeDescription
datastringThe data to send.

Example

JavaScript 
import ws from 'k6/ws';

export default function () {
  const url = 'ws://echo.websocket.org';
  const response = ws.connect(url, null, function (socket) {
    socket.on('open', function () {
      socket.send('my-message');
      socket.send(JSON.stringify({ data: 'hola' }));
    });
  });
}