I have a mail server with a web client and I need to rout it through my main website.

    const express = require("express")
    const app1 = express()
    const app2 = express()

    app1.get("/", (req, res) => { res.send("foo") })
    app2.get("/", (req, res) => { res.send("bar") })
    app2.listen(3000)

    app1.get("/rout", `${app2}:3000`)
    app1.listen(3001)