Network Connectivity Check：測試 URL 大全
平時搞 VPS、Proxy、VPN、Router，又或者整 Network Monitor，成日都要搵一啲穩定 URL 去測試：
- DNS Resolve
- HTTP Response
- IPv4 / IPv6 Connectivity
- Latency
- Routing
哩啲地址好多系統本身都會用，例如 Android、iOS、Windows 嘅 Network Detection。
⭐ 評分只代表一般使用環境參考，實際結果會受 ISP、地區、DNS、Routing 影響。
| Service Provider | URL | 🇨🇳 大陸體驗 | 🌏 境外體驗 | HTTP Status | IP Version | 備註 |
|---|---|---|---|---|---|---|
http://www.gstatic.com/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 204 | IPv4 + IPv6 | Google Connectivity Check | |
http://www.google.com/generate_204 | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 204 | IPv4 + IPv6 | Google Main Check | |
http://connectivitycheck.gstatic.com/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 204 | IPv4 + IPv6 | Android Connectivity | |
http://www.google-analytics.com/generate_204 | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 204 | IPv4 + IPv6 | Analytics Connectivity | |
| Apple | http://captive.apple.com | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 200 | IPv4 + IPv6 | Apple WiFi Detection |
| Apple | http://www.apple.com/library/test/success.html | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 200 | IPv4 + IPv6 | Apple Success Check |
| Microsoft | http://www.msftconnecttest.com/connecttest.txt | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 200 | IPv4 | Windows Network Check |
| Cloudflare | http://cp.cloudflare.com/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 204 | IPv4 + IPv6 | Cloudflare Connectivity |
| Firefox | http://detectportal.firefox.com/success.txt | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | 200 | IPv4 + IPv6 | Firefox Portal Detection |
| V2EX | http://www.v2ex.com/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | 204/301 | IPv4 + IPv6 | Community Test |
| 小米 | http://connect.rom.miui.com/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | 204 | IPv4 | MIUI Connectivity |
| Huawei | http://connectivitycheck.platform.hicloud.com/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | 204 | IPv4 | Huawei Connectivity |
| vivo | http://wifi.vivo.com.cn/generate_204 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | 204 | IPv4 | Vivo Connectivity |
HTTP 定 HTTPS？
http://
比較適合：
- Captive Portal Detection
- HTTP Response Test
- Redirect Test
https://
比較適合：
- TLS Handshake
- HTTPS Proxy
- Certificate Validation
平時我會用邊幾個？
測 VPS / Proxy：
http://cp.cloudflare.com/generate_204測 Android：
http://connectivitycheck.gstatic.com/generate_204測 Windows：
http://www.msftconnecttest.com/connecttest.txt測 Apple：
http://captive.apple.com小結
Network Test 唔一定要靠 Speedtest。
一個簡單 HTTP Check，已經可以幫你快速判斷：
- DNS 有冇問題
- Routing 正唔正常
- Proxy 有冇斷線
- IPv6 是否可用
哩份 List 可以當成平時玩 VPS、Network Debug 嘅 Reference。