socks server implementation

socks-server is a simple socks proxy server implementation that supports ( socks5 / socks4 / socks4a ) clients.

Build

go build .

Usage

./socks-server -h

Usage of socks-server:
  -bind string
        socks server bind address (default ":5555")
  -dns string
        specify a dns server (ip:port) to be used for resolving domains

./socks-server -bind :1080 -dns 8.8.8.8:53

2022/10/03 06:45:17 dns server 8.8.8.8:53
2022/10/03 06:45:17 Serving on :1080

Now the server is ready to accept connections and handle them.

TODO

socks5

• connect
• bind
• udp associate

socks4a

• connect
• bind

REF

• socks 5 (rfc 1928) : https://datatracker.ietf.org/doc/html/rfc1928
• socks 4 : https://www.openssh.com/txt/socks4.protocol
• socks 4a : https://www.openssh.com/txt/socks4a.protocol