socks5server

SOCKS v4/v4a/v5 server implementation with user/pass authentication node.js

A simple SOCKS v5/v4/v4a server implementation and demo proxy.

You can run it easily as:

node proxy.js [options]

This will create a proxy defaults at 127.0.0.1:1080.

options:see node proxy.js --help

Install

npm install socks5server

Use the server in your project

const socks5server=require('socks5server');

var server=socks5server.createServer();
//or
var server=new socks5server.socksServer();

server
.on('tcp',(socket, port, address, CMD_REPLY)=>{
	//do sth with the tcp proxy request
}).on('udp',(socket, clientPort, clientAddress, CMD_REPLY)=>{
	//do sth with the udp proxy request
}).on('error', function (e) {
	console.error('SERVER ERROR: %j', e);
}).on('client_error',(socket,e)=>{
	console.error('  [client error]',`${net.isIP(socket.targetAddress)?'':'('+socket.targetAddress+')'} ${socket.remoteAddress}:${socket.targetPort}`,e.message);
}).on('socks_error',(socket,e)=>{
	console.error('  [socks error]',`${net.isIP(socket.targetAddress)?'':'('+(socket.targetAddress||"unknown")+')'} ${socket.remoteAddress||"unknown"}}:${socket.targetPort||"unknown"}`,e);
}).listen(1080, "127.0.0.1");

/*
CMD_REPLY(reply code,addr,port)
see https://www.ietf.org/rfc/rfc1928.txt "6 Replies"@page5 for details
*/

The proxy.js is a simple demo of the server.

Implementations

✅:OK ❌:not implemented ❓:i don't kown

Socks4

• ❓

Socks4a

• ❓

Socks5

• address

  • ipv4 ✅
  • ipv6 ✅
  • domain name ✅

• auth methods

  • no auth ✅
  • userpass ✅
  • GSSAPI ❌
  • iana assigned ❌
  • private methods ✅ (use as a module)

• CMD

  • connect ✅
  • udp ✅ (maybe usable)
    • fragment ❌ (no plan on it)
  • bind ❌

I mainly modified the socks5 part and not sure if socks4 has been completely implemented.

RFC:

• socks5

License

(The MIT License)