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A rule-based tunnel in Go.
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README.md

Clash
Clash

A rule-based tunnel in Go.

Features

  • Local HTTP/HTTPS/SOCKS server
  • Surge-like configuration format
  • GeoIP rule support
  • Supports Vmess, Shadowsocks, Snell and SOCKS5 protocol
  • Supports Netfilter TCP redirecting
  • Comprehensive HTTP API

Install

Clash Requires Go >= 1.13. You can build it from source:

$ go get -u -v github.com/Dreamacro/clash

Pre-built binaries are available here: release

Check Clash version with:

$ clash -v

Daemon

Unfortunately, there is no native and elegant way to implement daemons on Golang.

So we can use third-party daemon tools like PM2, Supervisor or the like.

In the case of pm2, we can start the daemon this way:

$ pm2 start clash

If you have Docker installed, you can run clash directly using docker-compose.

Run clash in docker

Config

The default configuration directory is $HOME/.config/clash.

The name of the configuration file is config.yaml.

If you want to use another directory, use -d to control the configuration directory.

For example, you can use the current directory as the configuration directory:

$ clash -d .
This is an example configuration file
# port of HTTP
port: 7890

# port of SOCKS5
socks-port: 7891

# redir port for Linux and macOS
# redir-port: 7892

allow-lan: false

# Only applicable when setting allow-lan to true
# "*": bind all IP addresses
# 192.168.122.11: bind a single IPv4 address
# "[aaaa::a8aa:ff:fe09:57d8]": bind a single IPv6 address
# bind-address: "*"

# Rule / Global/ Direct (default is Rule)
mode: Rule

# set log level to stdout (default is info)
# info / warning / error / debug / silent
log-level: info

# RESTful API for clash
external-controller: 127.0.0.1:9090

# you can put the static web resource (such as clash-dashboard) to a directory, and clash would serve in `${API}/ui`
# input is a relative path to the configuration directory or an absolute path
# external-ui: folder

# Secret for RESTful API (Optional)
# secret: ""

# experimental feature
experimental:
  ignore-resolve-fail: true # ignore dns resolve fail, default value is true

# authentication of local SOCKS5/HTTP(S) server
# authentication:
#  - "user1:pass1"
#  - "user2:pass2"

# # experimental hosts, support wildcard (e.g. *.clash.dev Even *.foo.*.example.com)
# # static domain has a higher priority than wildcard domain (foo.example.com > *.example.com)
# hosts:
#   '*.clash.dev': 127.0.0.1
#   'alpha.clash.dev': '::1'

# dns:
  # enable: true # set true to enable dns (default is false)
  # ipv6: false # default is false
  # listen: 0.0.0.0:53
  # enhanced-mode: redir-host # or fake-ip
  # # fake-ip-range: 198.18.0.1/16 # if you don't know what it is, don't change it
  # nameserver:
  #   - 114.114.114.114
  #   - tls://dns.rubyfish.cn:853 # dns over tls
  #   - https://1.1.1.1/dns-query # dns over https
  # fallback: # concurrent request with nameserver, fallback used when GEOIP country isn't CN
  #   - tcp://1.1.1.1
  # fallback-filter:
  #   geoip: true # default
  #   ipcidr: # ips in these subnets will be considered polluted
  #     - 240.0.0.0/4

Proxy:

# shadowsocks
# The supported ciphers(encrypt methods):
#   aes-128-gcm aes-192-gcm aes-256-gcm
#   aes-128-cfb aes-192-cfb aes-256-cfb
#   aes-128-ctr aes-192-ctr aes-256-ctr
#   rc4-md5 chacha20 chacha20-ietf xchacha20
#   chacha20-ietf-poly1305 xchacha20-ietf-poly1305
- name: "ss1"
  type: ss
  server: server
  port: 443
  cipher: chacha20-ietf-poly1305
  password: "password"
  # udp: true

# old obfs configuration format remove after prerelease
- name: "ss2"
  type: ss
  server: server
  port: 443
  cipher: chacha20-ietf-poly1305
  password: "password"
  plugin: obfs
  plugin-opts:
    mode: tls # or http
    # host: bing.com

- name: "ss3"
  type: ss
  server: server
  port: 443
  cipher: chacha20-ietf-poly1305
  password: "password"
  plugin: v2ray-plugin
  plugin-opts:
    mode: websocket # no QUIC now
    # tls: true # wss
    # skip-cert-verify: true
    # host: bing.com
    # path: "/"
    # mux: true
    # headers:
    #   custom: value

# vmess
# cipher support auto/aes-128-gcm/chacha20-poly1305/none
- name: "vmess"
  type: vmess
  server: server
  port: 443
  uuid: uuid
  alterId: 32
  cipher: auto
  # udp: true
  # tls: true
  # skip-cert-verify: true
  # network: ws
  # ws-path: /path
  # ws-headers:
  #   Host: v2ray.com

# socks5
- name: "socks"
  type: socks5
  server: server
  port: 443
  # username: username
  # password: password
  # tls: true
  # skip-cert-verify: true
  # udp: true

# http
- name: "http"
  type: http
  server: server
  port: 443
  # username: username
  # password: password
  # tls: true # https
  # skip-cert-verify: true

# snell
- name: "snell"
  type: snell
  server: server
  port: 44046
  psk: yourpsk
  # obfs-opts:
    # mode: http # or tls
    # host: bing.com

Proxy Group:
# url-test select which proxy will be used by benchmarking speed to a URL.
- name: "auto"
  type: url-test
  proxies:
    - ss1
    - ss2
    - vmess1
  url: 'http://www.gstatic.com/generate_204'
  interval: 300

# fallback select an available policy by priority. The availability is tested by accessing an URL, just like an auto url-test group.
- name: "fallback-auto"
  type: fallback
  proxies:
    - ss1
    - ss2
    - vmess1
  url: 'http://www.gstatic.com/generate_204'
  interval: 300

# load-balance: The request of the same eTLD will be dial on the same proxy.
- name: "load-balance"
  type: load-balance
  proxies:
    - ss1
    - ss2
    - vmess1
  url: 'http://www.gstatic.com/generate_204'
  interval: 300

# select is used for selecting proxy or proxy group
# you can use RESTful API to switch proxy, is recommended for use in GUI.
- name: Proxy
  type: select
  proxies:
    - ss1
    - ss2
    - vmess1
    - auto

Rule:
- DOMAIN-SUFFIX,google.com,auto
- DOMAIN-KEYWORD,google,auto
- DOMAIN,google.com,auto
- DOMAIN-SUFFIX,ad.com,REJECT
- IP-CIDR,127.0.0.0/8,DIRECT
# rename SOURCE-IP-CIDR and would remove after prerelease
- SRC-IP-CIDR,192.168.1.201/32,DIRECT
- GEOIP,CN,DIRECT
- DST-PORT,80,DIRECT
- SRC-PORT,7777,DIRECT
# FINAL would remove after prerelease
# you also can use `FINAL,Proxy` or `FINAL,,Proxy` now
- MATCH,auto

Documentations

https://clash.gitbook.io/

Thanks

riobard/go-shadowsocks2

v2ray/v2ray-core

License

FOSSA Status

TODO

  • Complementing the necessary rule operators
  • Redir proxy
  • UDP support
  • Connection manager
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