Fast SOCKS5 TCP and UDP client/server library for Rust async (Tokio)

Features

• An async/.await SOCKS5 implementation.
• An async/.await SOCKS4 Client implementation.
• An async/.await SOCKS4a Client implementation.
• No unsafe code
• Built on top of the Tokio runtime
• Ultra lightweight and scalable
• No system dependencies
• Cross-platform
• Infinitely extensible, explicit server API based on typestates for safety
  • You control the request handling, the library only ensures you follow the proper protocol flow
  • Can skip DNS resolution
  • Can skip the authentication/handshake process (not RFC-compliant, for private use, to save on useless round-trips)
  • Instead of proxying in-process, swap out run_tcp_proxy for custom handling to build a router or to use a custom accelerated proxying method
• Authentication methods:
  • No-Auth method (0x00)
  • Username/Password auth method (0x02)
  • Custom auth methods can be implemented on the server side via the AuthMethod Trait
    • Multiple auth methods with runtime negotiation can be supported, with fast static dispatch (enums can be generated with the auth_method_enums macro)
• UDP is supported
• All SOCKS5 RFC errors (replies) should be mapped
• IPv4, IPv6, and Domains types are supported
• Exhaustive examples are provided that can be run immediately:
  • client
  • server
  • custom_auth_server
  • router
  • udp_client

This library is maintained by anyip.io a residential and mobile socks5 proxy provider.

Install

Open in crates.io.

Examples

Please check examples directory.

# Run client
RUST_LOG=debug cargo run --example client -- --socks-server 127.0.0.1:1337 --username admin --password password -a perdu.com -p 80

# Run server
RUST_LOG=debug cargo run --example server -- --listen-addr 127.0.0.1:1337 password -u admin -p password

# Test it with cURL
curl -v --proxy socks5://admin:password@127.0.0.1:1337 https://ipapi.co/json/

Inspired by

Thanks to all these SOCKS5 projects

• https://github.com/sfackler/rust-socks/blob/master/src/v5.rs
• https://github.com/shadowsocks/shadowsocks-rust/blob/master/src/relay/socks5.rs
• https://github.com/ylxdzsw/v2socks/blob/master/src/socks.rs

Further Considerations

• Implementation made with Tokio-codec https://github.com/yfaming/yimu-rs/blob/master/src/socks5.rs