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A SOCKS (v5) client library for node.js


$ npm install socksjs


var SocksConnection = require('socksjs');

SocksConnection implements node's Duplex Stream. See the Node documentation for Stream consumers to see what methods and events are available in addition to those listed below.

Creating a new SocksConnection

var sock = new SocksConnection(remote_options, sock_options); var sock = SocksConnection.connect(remote_options, sock_options, connect_handler);


  • port - The port to connect to (mandatory)
  • host - The hostname or IP to connect to through the SOCKS proxy (optional, default: 'localhost')
  • ssl - Connect using SSL (optional, default false)
  • rejectUnauthorised - If true, the server certificate is verified against the list of supplied CAs. An 'error' event is emitted if verification fails (optional, default: false)
  • key: - A string or Buffer containing the private key of the client in PEM format.
  • cert - A string or Buffer containing the certificate key of the client in PEM format.


  • localAddress - The local interface to bind to for the outgoing connections (optional, default:
  • allowHalfOpen - If true, the socket won't automatically send a FIN packet when the other end of the socket sends a FIN packet. (optional, default: false)
  • host - The hostname or IP of the SOCKS proxy (optional, default: localhost)
  • port - The SOCKS proxy's port (optional, default: 1080)
  • user - The username to use to authenticate to the SOCKS proxy (optional, default: null)
  • pass - The password to use to authenticate to the SOCKS proxy (optional, default: null)


Function to attach to the 'connect' event of the SocksConnection

Additional Methods

getPeerCertificate - Returns an object representing the peer's certificate. See the Node tls documentation for more information.



SocksConnection will emit a connect event when it has successfully connected to the target host


SocksConnection will emit an error event if it cannot connect to the SOCKS proxy, target host or if there is an error during the connection's lifetime.



socksjs needs tests. Pull requests with testcases are much appreciated.


socksjs (C) 2013 Jack Allnutt and is licensed under the MIT license, a copy of which can be found in the LICENSE file.