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 |