ESniffer 🔬

Modern network analyze tool. Alternatives to Hoxy, Charles, etc.

Install

npm i esniffer
yarn add esniffer

Example

// index.js
import ESniffer from "esniffer";
import fs from "fs";

// Required if you want to monitor over HTTPS
const key = fs.readFileSync(`path/to/root-key.pem`);
const cert = fs.readFileSync(`path/to/root-cert.pem`);

const proxy = ESniffer.createServer({ secure: { key, cert } });
proxy.listen(8080);

proxy.on("request", (req) => {
  req.pipe(process.stdout);
});
proxy.on("response", (res) => {
  res.pipe(process.stdout);
});
proxy.on("info", (info) => {
  console.log(info);
});
proxy.on("error", (e) => {
  console.error(e.message);
});

Start and configure the proxy server

node index.js

In your mac, from System Preferences > Network > Advanced... > Proxies tab, configure the proxy as follows:

Protocol	Host	Port
Web Proxy (HTTP)	127.0.0.1	8080
Secure Web Proxy (HTTPS)	127.0.0.1	8080

Finally, don't forget OK and Apply.

Events

name	description	type
info	Logs of the proxy server	string
error	Errors occurring on the proxy server	Error
request	Request object to the actual server	http.IncomingMessage
response	Response object to the actual server	http.IncomingMessage