Unable to get the result of an asynchronous function in a websocket code block #5524
Description
Brief summary
When attempting to call an asynchronous function from websocket functions, no result is returned.
This is necessary to use functions from the crypto.subtle package.
k6 version
v1.4.2
OS
linux/amd64, Manjaro
Docker version and image (if applicable)
No response
Steps to reproduce the problem
Script for playback problem
import ws from 'k6/ws';
import { sleep } from 'k6';
export async function async_func(){
console.log("start async_func")
sleep(1);
console.log("end async_func")
return 10;
}
export default async function () {
const url = 'wss://test-ws-address:443/api';
const params = { tags: { my_tag: 'hello' } };
var res = await async_func();
console.log('res async function outer websocket = '+res);
const res_ws = ws.connect(url, params, async function (socket) {
socket.on('open', function open() {
console.log('connected');
socket.setInterval( function timeout() {
socket.ping();
console.log('Pinging every 3sec (setInterval test)');
}, 3000);
});
socket.on('ping', () => console.log('PING!'));
socket.on('pong', async () => {
console.log('PONG!');
var res1 = await async_func();
console.log('res async function in websocket = '+res1);
});
socket.on('close', () => console.log('disconnected'));
socket.on('error', function (e) {
if (e.error() != 'websocket: close sent') {
console.log('An unexpected error occured: ', e.error());
}
});
});
}
Calling an asynchronous function in the main code block returns a result, but in a websocket code block it does not.
Expected behaviour
Calling an asynchronous function in the main code block returns a result, but in a websocket code block it does not.
INFO[0000] start async_func source=console
INFO[0001] end async_func source=console
INFO[0001] res async function outer websocket = 10 source=console
INFO[0001] connected source=console
INFO[0004] Pinging every 3sec (setInterval test) source=console
INFO[0004] PONG! source=console
INFO[0004] start async_func source=console
INFO[0005] end async_func source=console
INFO[0007] Pinging every 3sec (setInterval test) source=console
INFO[0007] PONG! source=console
INFO[0007] start async_func source=console
INFO[0008] end async_func source=console
Actual behaviour
Calling an asynchronous function from a websocket block returns a result.