免流技术深度探索：iOS平台V2Ray科学上网全攻略与安全实践

// 配置文件示例 (quantumult-x.conf)
[general]
resource-parser = https://raw.githubusercontent.com/crossutility/Quantumult-X/master/resource-parser.js
excluded_routes = 10.0.0.0/8, 127.0.0.0/8
geo_location_checker = http://ip-api.com/json/?lang=zh-CN, https://raw.githubusercontent.com/crossutility/Quantumult-X/master/sample-location-with-script.js

[policy]
static = 免流节点, proxy, 香港节点, 台湾节点, 日本节点, 美国节点, img-url = https://raw.githubusercontent.com/crossutility/Quantumult-X/master/icon/policy.png

[server_remote]
https://your-provider.com/sub?type=quantumult-x, tag=免流订阅, update-interval=86400, opt-parser=true, enabled=true

[filter_remote]
https://raw.githubusercontent.com/crossutility/Quantumult-X/master/filter.txt, tag=全网拦截, force-policy=reject, enabled=true

[http_backend]
https://raw.githubusercontent.com/crossutility/Quantumult-X/master/sample-backend.js, tag=backend, enabled=true

[mitm]
hostname = *.qq.com, *.music.163.com, *.tiktokv.com
passphrase = 
p12 = 
skip_validating_cert = true
force_sni_domain_name = false

// 根据应用类型分流
const typeMap = {
  "VIDEO": ["com.google.ios.youtube", "com.tencent.qqlive"],
  "SOCIAL": ["com.zhiliaoapp.musically", "com.instagram.ios"]
}

function handleRequest(request) {
  const bundleId = request.session?.bundleIdentifier
  for (const [type, apps] of Object.entries(typeMap)) {
    if (apps.includes(bundleId)) {
      request.setPolicy(type + "节点")
      break
    }
  }
}

// 基于延迟自动切换节点
const threshold = 300 // 毫秒
const checkInterval = 60 // 秒

setInterval(async () => {
  const results = await Promise.all(
    $configuration.policies
      .filter(p => p.type === "PROXY")
      .map(p => testLatency(p))
  
  const best = results.reduce((min, curr) => 
    curr.latency < min.latency ? curr : min)
  
  if (best.latency < threshold) {
    $configuration.setPolicy(best.name)
  }
}, checkInterval * 1000)

// 随机化HTTP头特征
const hosts = [
  "m.v.qq.com",
  "music.163.com",
  "gfw-breaker.win"
]

function randomHeader(request) {
  const randHost = hosts[Math.floor(Math.random() * hosts.length)]
  request.setHeader("Host", randHost)
  request.setHeader("X-Online-Host", randHost)
  request.setHeader("Referer", `https://${randHost}/`)
}