tcp-proxy.js

A TCP Proxy package for NodeJS

[![NPM version][npm-image]][npm-url]
[![Build Status][travis-image]][travis-url]
[![Appveyor status][appveyor-image]][appveyor-url]
[![Coverage Status][coveralls-image]][coveralls-url]

[npm-image]: https://img.shields.io/npm/v/tcp-proxy.js.svg?style=flat-square
[npm-url]: https://npmjs.org/package/tcp-proxy.js
[travis-url]: https://travis-ci.org/whxaxes/tcp-proxy.js
[travis-image]: http://img.shields.io/travis/whxaxes/tcp-proxy.js.svg
[appveyor-url]: https://ci.appveyor.com/project/whxaxes/tcp-proxy.js/branch/master
[appveyor-image]: https://ci.appveyor.com/api/projects/status/github/whxaxes/tcp-proxy.js?branch=master&svg=true
[coveralls-url]: https://coveralls.io/r/whxaxes/tcp-proxy.js
[coveralls-image]: https://img.shields.io/coveralls/whxaxes/tcp-proxy.js.svg

Usage

``bash
$ npm i tcp-proxy.js --save
`

$3

`js
const TCPProxy = require('tcp-proxy.js');
const proxy = new TCPProxy({ port: 9229 });
proxy.createProxy({
forwardPort: 9999,
forwardHost: 'localhost',
});
`

$3

`js
const TCPProxy = require('tcp-proxy.js');
const proxy = new TCPProxy({ host: 'localhost', port: 9229 });
proxy.createProxy({
forwardPort: 9999,
forwardHost: 'localhost',
});
`

$3

`js
const TCPProxy = require('tcp-proxy.js');
const proxy = new TCPProxy({ host: 'localhost', port: 9229 });
proxy.createProxy({
getForwardInfo: () => ({
host: '127.0.0.1',
port: data.port,
}),
});
`

$3

`js
proxy.end();
`

$3

`js
proxy.createProxy({
forwardPort: 9999,
interceptor: {
client(chunk) {
// request => proxy server => interceptor.client => forward server
const data = chunk.toString();
const newData = data.replace('GET / ', 'GET /tom ');
return Buffer.from(newData);
},
server(chunk) {
// forward server => interceptor.server => proxy server => response
const data = chunk.toString();
const newData = data.replace('hello tom', 'bello tom');
return Buffer.from(newData);
},
},
});
`

$3

`js
proxy.createProxy({
forwardPort: 9999,
interceptor: {
client(chunk) {
// request => proxy server => interceptor.client => forward server
const data = chunk.toString();
return new Promise(resolve => {
setTimeout(() => {
const newData = data.replace('GET / ', 'GET /tom ');
resolve(Buffer.from(newData));
}, 200);
});
},
},
});
`

$3

#### IP, Port of Client, Server and Self

`js
proxy.createProxy({
forwardPort: 9999,
interceptor: {
client(result, encoding, connection) {
console.info('Connection from ', connection.client.ip, ':', connection.client.port, 'to', connection.self.ip, ':', connection.self.port, 'from', connection.server.ip, ':', connection.server.port);
return result
}
},
});
`

#### Data size

`js
proxy.createProxy({
forwardPort: 9999,
interceptor: {
server(result, encoding, connection) {
console.log('Connection Size:' + connection.size);
return result
}
},
});
``

License

MIT