Cannot make Pool working with client factory

[evgeny-kim]

I'm creating a pool of clients with a pre-built retry interceptor. Such pool only makes one request per connection, a total of 3 requests in the below example. All subsequent requests are queued and never get sent.

Without factory everything works perfect. What am I doing wrong?

import { Client, Pool, interceptors } from 'undici';

const test = () => {

    const createRetryClient = (origin, opts) => {
        return new Client(origin, opts).compose(
            interceptors.retry({ maxRetries: 3 })
        );
    }

    const pool = new Pool(
        'https://httpbin.org',
        {
            connections: 3,
            factory: createRetryClient
        }
    )

    const request = async (id) => {
        const { body } = await pool.request({
            path: '/headers',
            method: 'GET'
        });
        const data = await body.json();
        console.log(
            id,
            data.headers['Host'], 
            `Connected: ${pool.stats.connected}`,
            `Queued: ${pool.stats.queued}`,
            `Running: ${pool.stats.running}`
        );
    }

    for (let i = 0; i < 10; i++) {
        request(i);
    }

}

test();

[ronag]

#3368

[ronag]

@evgeny-kim If you could help develop a test for your use case we could land the fix.