I create multiple instances with different IP's but always primary IP is used for connections made from the server to WAN

[Ozguner]

I have eth0 and eth0:1, eth0:2 total of 3 different IP's.

I have for example proxy server instances running on 10.0.0.1 and 10.0.0.2 and 10.0.0.3.
However, regardless of which socks5 server IP I connect to from a client, I get assigned 10.0.0.1

[brozeph]

@Ozguner, can you show how you are instantiating the module with code?

[Ozguner]

@Ozguner, can you show how you are instantiating the module with code?

Hello @brozeph !

I set these IPs in listening part. My expectation was, outgoing connection would go from the IP we listen to.
Basically I am looking for an option to specify outgoing IP.
Is this possible with simple socks?

import socks5 from 'simple-socks';

const server = socks5.createServer();

server.listen(1080, '66.249.70.28', function () {
  console.log('SOCKS5 proxy server started on 66.249.70.28:1080');
});

[e9x]

@Ozguner, can you show how you are instantiating the module with code?

Hello @brozeph !

I set these IPs in listening part. My expectation was, outgoing connection would go from the IP we listen to. Basically I am looking for an option to specify outgoing IP. Is this possible with simple socks?

import socks5 from 'simple-socks';

const server = socks5.createServer();

server.listen(1080, '66.249.70.28', function () {
  console.log('SOCKS5 proxy server started on 66.249.70.28:1080');
});

Although I am late to respond, this may be good for reference. I have a fork of simple-socks that can do what you're looking for. The API is very different (promises, different method names). It can be found here.

import { createProxyServer, waitForConnect } from '@e9x/simple-socks';
import { connect } from 'net';

const ip = '66.249.70.28';

const server = createProxyServer({
	async connect(port, host) {
		// create unconnected socket
		const socket = connect({
			port,
			host,
			localAddress: ip,
		});

		await waitForConnect(socket);

		return socket;
	},
});

server.listen(1080, ip, () => {
	console.log('SOCKS5 proxy server started on %s:1080', ip);
});

[krm35]

There is also this lib if needed

https://github.com/lqqyt2423/node-socks5-server/blob/master/examples/1-normal.js