sing-box

• SagerNet/sing-box
  • GPLv3, Golang
  • universal proxy platform
  • 支持协议
    • ShadowTLS / Shadowsocks / Trojan / VLESS / VLESS-REALITY / VMess-HTTPUpgrade-TLS / VMess-WebSocket-TLS / VMess-WebSocket / VMess
• 参考
  • GSO - Generic Segmentation Offload - 通用分段卸载

caution

• TUN ICMP 会被拦截且无法绕过，导致所有 ping 都 < 1ms
  • google/gvisor#8657
• prefer_ipv4 不一定能保证 IPv4 优先
  • #932

abbr.	stand for
SFM	sing-box for MacOS
SFA	sing-box for Android

# macOS Homebrew
brew install sing-box # 命令行 /opt/homebrew/etc/sing-box/config.json
brew install sfm      # 桌面应用

/opt/homebrew/opt/sing-box/bin/sing-box version

# AlpineLinux
# /usr/bin/sing-box
# sing-box -D /var/lib/sing-box -C /etc/sing-box check
# sing-box -D /var/lib/sing-box -C /etc/sing-box run
apk add -X https://mirrors.tuna.tsinghua.edu.cn/alpine/edge/testing/ --no-cache sing-box
kill -HUP $(pgrep sing-box) # reload

# https://github.com/SagerNet/sing-box/releases
# https://sing-box.sagernet.org/changelog/
VERSION=1.11.6
curl -L -o sing-box.tar.gz https://github.com/SagerNet/sing-box/releases/download/v${VERSION}/sing-box-${VERSION}-$(uname -s | tr '[:upper:]' '[:lower:]')-$(uname -m | sed 's/x86_64/amd64/').tar.gz
# gtar -zxvf sing-box.tar.gz --strip-components=1 --wildcards '*/sing-box'
tar zxvf sing-box.tar.gz --strip-components=1 --wildcards '*/sing-box'
./sing-box version

# Linux
sudo mv sing-box /usr/local/bin/
# sudo mv sing-box /usr/bin/ # 配合 sing-box-openrc
apk add -X https://mirrors.tuna.tsinghua.edu.cn/alpine/edge/testing/ --no-cache sing-box

docker run -d \
  -v /etc/sing-box:/etc/sing-box/ \
  --name=sing-box \
  --restart=always \
  ghcr.io/sagernet/sing-box \
  -D /var/lib/sing-box \
  -C /etc/sing-box/ run

sing-box run conf.json

flag	for
-c config.json
-C config.d
-D CWD

abbr.	stand for	meaning
VAPID
ECH	Encrypted Client Hello	加密客户端 Hello
RDRC

• srs
  • 二进制的 rule set, zlib 压缩
• Router
  • router
    • router.rules
  • dns
    • dns.rules
  • DnsClient
  • func RouteConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext)
    • .matchRule
      • 按需查找 ProcessInfo
      • 按需 匹配 FakeIP, 匹配到了更新 FQDN
      • 按需 DnsReverseMapping - IP -> Domain
      • 遍历 .rules.Match(metadata)
      • .actionSniff
    • action=route
    • action=reject
    • action=hijack-dns
• NetworkManager
  • 监测 网络状态
  • 监测 网络接口
  • 监测 电源
• InboundManager
• OutboundManager
• EndpointManager
• ConnectionManager
• platform.Interface

/*
	DomainStrategyAsIS DomainStrategy = iota
	DomainStrategyPreferIPv4
	DomainStrategyPreferIPv6
	DomainStrategyUseIPv4
	DomainStrategyUseIPv6
*/
// `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`
type DomainStrategy = 'prefer_ipv4';