STunnel

Simple SOCKS5/HTTP tunnel. SOCKS5 on client side provides NO AUTHENTICATION TCP/UDP proxy.

            .                      |                     .
            .                      f                     .
            .                      i                     .
port1 ------|                      r                     |------ port1
            |                      e                     |
            |                      |                     |
port2 ---client---------------- tunnel ----------------server--- port2
            |                      |                     |
            |                      w                     |
port3 ------|                      a                     |------ port3
            .                      l                     .
            .                      l                     .
            .                      |                     .

Build

Build by Cargo:

Cargo build --release

Usage

./stunnel_server <OPTIONS>
Options:
    -l, --listen <IP:PORT>
    -k, --key <STRING>
        --log <PATH>
        --ucp-metrics-path <PATH>

./stunnel_client <OPTIONS>
Options:
    -s, --server <IP:PORT>
    -k, --key <STRING>
        --enable-ucp
        --socks5-proxy <IP:PORT>
        --http-proxy <IP:PORT>
        --log <PATH>
        --ucp-metrics-path <PATH>
        --tcp-tunnel-count <NUMBER>

Browser connect client address(127.0.0.1:1080) through SOCKS5 or connect client address(127.0.0.1:8888) through HTTP.

--enable-ucp option on client side to enable UCP tunnel instead of TCP tunnel, UCP tunnel is much faster than TCP tunnel in some cases.

UCP

UCP is an ARQ protocol implementation, which is based on UDP and inspired by KCP.

Work with autoproxy and gatewaysocks

• autoproxy
• gatewaysocks

    ----------------                 -------------                     -----------
    | gatewaysocks | === TCP/UDP ==> | autoproxy | ===== TCP/UDP ====> | stunnel |
    ----------------                 -------------   |                 -----------
           ^                               ^         |                 -----------
           |                               |         |== TCP/UDP ====> | direct  |
           |                               |                           -----------
    -----------------             ------------------
    | other devices |             |   set system   |
    |  in the same  |             | proxy settings |
    |    router     |             |  to autoproxy  |
    -----------------             ------------------