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T_T, the tunnel, a tunnel protocol && tool

Rust 100.00%

tt's Introduction

TT, The Tunnel

A lightwight, cross-platform, secure and functional tunnel protocol, or tool.

Quick start

server

tt server -k password                       # will listen on 0.0.0.0, ports range: 1024-65535

client

tt client -s [server addr] -k password      # will listen for http/socks5 proxy connection on 127.0.0.1:1080

Benchmark?

Laptop: i7-8550U(max 4GHz), 16GB LPDDR3 2133 RAM

# server run:
tt server -k 1234 &; sudo nc -l -p 80 < /dev/zero

# client run:
tt client -s 127.0.0.1 -k 1234 &; curl -x socks5://127.0.0.1:1080 127.0.0.1 >>/dev/null

Result:

	tt	ss-libev
`aes-256-gcm`	300 ~ 350 MB/s	350 ~ 400 MB/s
`chacha20-poly1305`	≈ 270 MB/s	≈ 300 MB/s

Roadmap / Aims

Usage

server

tt-server 1.1.0
TT, The Tunnel, server side

USAGE:
    tt server [FLAGS] [OPTIONS] --key <key>

FLAGS:
    -h, --help                        Prints help information
        --no-port-jump-on-tun-mode
    -V, --version                     Prints version information
    -v, --verbose
        --with-proxy

OPTIONS:
    -k, --key <key>
    -l, --listen <listen-addr>      [default: 0.0.0.0]
    -m, --methods <methods>         [default: chacha20-poly1305]
    -r, --port-range <range>        [default: 1024-65535]
        --tun-ip <tun-ip>
        --tun-mtu <tun-mtu>         [default: 1410]
        --tun-proto <tun-proto>     [default: UDP]

client

tt-client 1.1.0
TT, The Tunnel, client side

USAGE:
    tt client [FLAGS] [OPTIONS] --key <key> --server <server>

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information
    -v, --verbose

OPTIONS:
    -k, --key <key>
    -l, --listen <listen-addr>      [default: 127.0.0.1:1080]
    -m, --methods <methods>         [default: chacha20-poly1305]
    -r, --port-range <range>        [default: 1024-65535]
    -s, --server <server>
        --tun-ip <tun-ip>
        --tun-mtu <tun-mtu>         [default: 1410]
        --tun-proto <tun-proto>     [default: UDP]

About MTU problem:

TUN mode on udp , set mtu like：
- --tun-mtu = 1410 - [ 1500 - REAL_MTU ]
TUN mode on tcp , set mtu or TCP MSS clamping
- --tun-mtu = 1410 - [ 1500 - REAL_MTU ]
- iptables -t mangle -I FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

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