{
  "id": "go/go-mod-download-timeout",
  "signature": "go: github.com/foo/bar@v1.0.0: read tcp 10.0.0.1:443->10.0.0.2:443: i/o timeout",
  "signature_zh": "go: github.com/foo/bar@v1.0.0: 读取 TCP 10.0.0.1:443->10.0.0.2:443: I/O 超时",
  "regex": "go:\\ github\\.com/foo/bar@v1\\.0\\.0:\\ read\\ tcp\\ 10\\.0\\.0\\.1:443\\->10\\.0\\.0\\.2:443:\\ i/o\\ timeout",
  "domain": "go",
  "category": "network_error",
  "subcategory": null,
  "root_cause": "Network connectivity issues prevent the Go toolchain from reaching the module proxy or origin server, causing a timeout.",
  "root_cause_type": "generic",
  "root_cause_zh": "网络连接问题阻止 Go 工具链访问模块代理或源服务器，导致超时。",
  "versions": [
    {
      "version": "1.16",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "GOPROXY_TIMEOUT is not a standard Go environment variable; it has no effect.",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "If the network is down, retrying will continue to fail.",
      "fail_rate": 0.5,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.8,
      "how": "Check network connectivity and proxy settings; use 'go env -w GOPROXY=https://goproxy.cn,direct' if in China or a different proxy.",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.7,
      "how": "Use 'GOPROXY=direct go mod download' to bypass the proxy and fetch directly from VCS.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.8,
  "resolvable": "partial",
  "first_seen": "2024-08-02",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}