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Clash
Clash

A rule-based tunnel in Go.

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Features

  • Local HTTP/HTTPS/SOCKS server with/without authentication
  • VMess, Shadowsocks, Trojan (experimental), Snell protocol support for remote connections. UDP is supported.
  • Built-in DNS server that aims to minimize DNS pollution attacks, supports DoH/DoT upstream. Fake IP is also supported.
  • Rules based off domains, GEOIP, IP CIDR or ports to forward packets to different nodes
  • Remote groups allow users to implement powerful rules. Supports automatic fallback, load balancing or auto select node based off latency
  • Remote providers, allowing users to get node lists remotely instead of hardcoding in config
  • Netfilter TCP redirecting. You can deploy Clash on your Internet gateway with iptables.
  • Comprehensive HTTP API controller

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
Pre-built Premium binaries are available here: Premium release. Source is not currently available.

Check Clash version with:

$ clash -v

Daemonize Clash

Unfortunately, there is no native or elegant way to implement daemons on Golang. We recommend using third-party daemon management tools like PM2, Supervisor or the like to keep Clash running as a service.

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

$ pm2 start clash

If you have Docker installed, it's recommended to deploy 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 (click to expand) 
# port of HTTP
port: 7890

# port of SOCKS5
socks-port: 7891

# (HTTP and SOCKS5 in one port)
# mixed-port: 7890

# 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
  # interface-name: en0 # outbound interface name

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

# # 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 > .example.com)
# # +.foo.com equal .foo.com and foo.com
# hosts:
#   '*.clash.dev': 127.0.0.1
#   '.dev': 127.0.0.1
#   'alpha.clash.dev': '::1'
#   '+.foo.dev': 127.0.0.1

# dns:
  # enable: true # set true to enable dns (default is false)
  # ipv6: false # default is false
  # listen: 0.0.0.0:53
  # # default-nameserver: # resolve dns nameserver host, should fill pure IP
  # #   - 114.114.114.114
  # #   - 8.8.8.8
  # 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
  # fake-ip-filter: # fake ip white domain list
  #   - '*.lan'
  #   - localhost.ptlogin2.qq.com
  # 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

proxies:
  # 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-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
    # servername: example.com # priority over wss host
    # network: ws
    # ws-path: /path
    # ws-headers:
    #   Host: v2ray.com
  
  - name: "vmess-http"
    type: vmess
    server: server
    port: 443
    uuid: uuid
    alterId: 32
    cipher: auto
    # udp: true
    # network: http
    # http-opts:
    #   # method: "GET"
    #   # path:
    #   #   - '/'
    #   #   - '/video'
    #   # headers:
    #   #   Connection:
    #   #     - keep-alive

  # 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

  # trojan
  - name: "trojan"
    type: trojan
    server: server
    port: 443
    password: yourpsk
    # udp: true
    # sni: example.com # aka server name
    # alpn:
    #   - h2
    #   - http/1.1
    # skip-cert-verify: true

proxy-groups:
  # relay chains the proxies. proxies shall not contain a relay. No UDP support.
  # Traffic: clash <-> http <-> vmess <-> ss1 <-> ss2 <-> Internet
  - name: "relay"
    type: relay
    proxies:
      - http
      - vmess
      - ss1
      - ss2

  # url-test select which proxy will be used by benchmarking speed to a URL.
  - name: "auto"
    type: url-test
    proxies:
      - ss1
      - ss2
      - vmess1
    # tolerance: 150
    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
  
  - name: UseProvider
    type: select
    use:
      - provider1
    proxies:
      - Proxy
      - DIRECT

proxy-providers:
  provider1:
    type: http
    url: "url"
    interval: 3600
    path: ./hk.yaml
    health-check:
      enable: true
      interval: 600
      url: http://www.gstatic.com/generate_204
  test:
    type: file
    path: /test.yaml
    health-check:
      enable: true
      interval: 36000
      url: http://www.gstatic.com/generate_204

rules:
  - DOMAIN-SUFFIX,google.com,auto
  - DOMAIN-KEYWORD,google,auto
  - DOMAIN,google.com,auto
  - DOMAIN-SUFFIX,ad.com,REJECT
  # rename SOURCE-IP-CIDR and would remove after prerelease
  - SRC-IP-CIDR,192.168.1.201/32,DIRECT
  # optional param "no-resolve" for IP rules (GEOIP IP-CIDR)
  - IP-CIDR,127.0.0.0/8,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

Advanced

Provider

Documentations

https://clash.gitbook.io/

Credits

riobard/go-shadowsocks2

v2ray/v2ray-core

License

FOSSA Status

TODO

  • Complementing the necessary rule operators
  • Redir proxy
  • UDP support
  • Connection manager
  • [ ] Event API