Stream API not working

#1

Hello, I am trying to test the Stream API but it’s giving me an error “‘Could not POST to http://localhost:4000/webhook. Please check your webhook URL.’”

Here’s my code:

import Moralis from 'moralis';
import { EvmChain } from "@moralisweb3/common-evm-utils";
import express from "express";




const Moralis2 = Moralis.default
const app = express();
const port = 4000;

app.use(express.json())



app.post("/webhook", async (req, res) => {
    const webhook = req.body;
    console.log(webhook)
    return res.status(200).json();
})



const main = async () => {

    Moralis2.start({
        apiKey: "APIKEY"
    });

    const stream = {
        chains: [EvmChain.ETHEREUM, EvmChain.POLYGON], // list of blockchains to monitor
        description: "monitor Bobs wallet", // your description
        tag: "bob", // give it a tag
        webhookUrl: "http://localhost:4000/webhook", // webhook url to receive events,
        includeNativeTxs: true
    }

    const newStream = await Moralis2.Streams.add(stream);
    const { id } = newStream.toJSON(); // { id: 'YOUR_STREAM_ID', ...newStream }

    // Now we attach bobs address to the stream
    const address = "0x68b3f12d6e8d85a8d3dbbc15bba9dc5103b888a4";

    await Moralis2.Streams.addAddress({ address, id });
}

app.listen(port, () => {
    console.log("live")
    main()
})
#2

you have to use a webhook url that is accessible over the internet, that localhost url works only on your computer, you can use webhook.site or ngrok as a proxy