socks2http: Convert SOCKS5 proxy to HTTP proxy with Rust

socks2http can convert an existing SOCKS5 proxy to an HTTP proxy.

This is just what Privoxy's forward-socks5 does.

Usage

cargo build --release
socks2http --from <space separated SOCKS5 ports> --to <HTTP proxy listen port>
# e.g. 
# forward a socks5 server listening at localhost:9050 as an http proxy at localhost:10050
socks2http --from 9050 --to 10050
# if socks5 requires authentication:
socks2http --from 9050 --to 10050 --auth-username myusername --auth-password mypassword
# forward multiple socks5 servers listening at localhost:2000, :2001, :2002, using random switch policy
socks2http --from 2000 2001 2002 --to 10050

Implementation

socks5 connectivity provided by async-socks5.

handle CONNECT request with TcpStream bidirectional io copy

handle other requests such as GET with reqwest