Socket closed unexpectedly after 5 seconds

Description

I'm running redis with replication, with the simple client configuration createClient({ url }). After the initial connection is successfully established, the socket is closed after 5 seconds. I guess this is because the socket connectTimeout is by default 5s, and in packages/client/lib/client/socket.ts, it'll close it based on the property.

async #createSocket(): Promise<net.Socket | tls.TLSSocket> {
    const socket = this.#socketFactory.create();

    let onTimeout;
    if (this.#connectTimeout !== undefined) {
      onTimeout = () => socket.destroy(new ConnectionTimeoutError());
      socket.once('timeout', onTimeout);
      socket.setTimeout(this.#connectTimeout);
    }
    ....
    return socket;
  }

I've already taken a look into other related issues, and I tried setting pingInterval and setting socket connectTimeout to 0, and as expected, the socket is closed regardless. What is the recommended way to keep the socket connection alive?

INFO:
Redis is deployed via Helm (bitnami 20.1.4) into kubernetes cluster, with one master node and 3 replicas.

Node.js Version

20.14.0

Redis Server Version

7.4.0

Node Redis Version

4.7.0

Platform

Linux

Logs

No response

Start in packages/client/lib/client/socket.ts, especially #createSocket, and reproduce the five-second disconnect with the reported Redis replication and client configuration. Trace the timeout handling after the initial connection and determine the supported behavior for keeping the socket alive; done means the cause and expected configuration or code change are established and covered by a regression check.