Calling iface.httpAgent() multiple times breaks http requests

[mStirner]

let iface = ...;
let {host, port} = iface.settings;
let agent1 = iface.httpAgent();
let agent2 = iface.httpAgent();

request(`http://${host}:${port}/shelly`, {
    agent1
}, (err, result) => {
    console.log("HTTP REquest /shelly", err || result.body);
});


request(`http://${host}:${port}/settings`, {
    agent2
}, (err, result) => {
    console.log("HTTP REquest /settings", err || result.body);
});

This breaks http requests. A quick fix in the class.interface.js:

let agentCreated = null;

...

    httpAgent(options = {}) {

        if (agentCreated) {
            return agentCreated;
        }

        ...

        agentCreated = agent;
        return agent;

    }

Solves it.

Is there a better way?