newproxy

!npm
!npm type definitions
!npm

JS Proxy library with support for request/response rewriting, optional SSL MITM (man-in-the-middle), external proxy.

$3

``bash
npm i newproxy
`

$3

`js
import { NewProxyBuilder } from 'newproxy';

const proxy = NewProxyBuilder.new()
.sslMitm((req, clientSocket, head) => true)
.requestInterceptor(async (rOptions, clientReq, clientRes, ssl) => {
clientReq.setTimeout(10000); // Set request timeout to 10 seconds

console.log(URL requested：${rOptions.protocol}//${rOptions.hostname}:${rOptions.port});
console.log('Cookie:', rOptions.headers.cookie);

if (rOptions.url.includes('test')) {
clientRes.setHeader('Content-Type', 'application/json');
clientRes.end('Hello NewProxy!');
// If we call clientRes.end and close client socket in request interception
// then no other actions are performed
}
})
.responseInterceptor(async (clientReq, clientRes, proxyReq, proxyRes, ssl) => {
// proxyRes will be piped to clientRes, we can change proxyRes or write to clientRes directly here
proxyRes.headers['test_header'] = 'test';

if (proxyRes.statusCode === 301) {
clientRes.setHeader('Content-Type', 'text/html');
clientRes.statusCode = 404;
clientRes.end('NO REDIRECTS HERE');
}
})
.externalProxyNoMitm('http://127.0.0.1:8800') // Set external proxy for non-MITM SSL requests
.externalProxy('http://127.0.0.1:8888')
.build(); // We can set external proxy statically or by fn

// Start listening
(async () => {
await proxy.run();
})();

...

await proxy.stop();
``

$3

- Optional request/response interception
- Optional MITM for SSL requests
- Optional external proxy
- Written in TypeScript

$3

Multiple example files are available in /examples folder