{
  "service": "cf-worker-speedtest",
  "version": "1.0.0",
  "usage": "https://speed.110111.best/__down?bytes=10000000",
  "limits": {
    "maxBytes": 1073741824,
    "chunkSize": 65536
  },
  "routes": {
    "/__down?bytes=N": "GET/HEAD，返回 N 字节随机/零填充数据；支持 Range",
    "/__up": "POST，读取上传体并返回 { bytes, durationMs, mbps }",
    "/__trace": "GET，返回边缘节点、出口 IP、HTTP 协议等 JSON 信息"
  }
}