ThingsBoard部署APP问题-GitHub无法访问

flutter以window平台方式运行时报错：

Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure you trust this source!
Resolving dependencies...
Git error. Command: `git clone --mirror https://github.com/thingsboard/esp_provisioning_softap C:\Users\Administrator\AppData\Local\Pub\Cache\_temp\dir86ecccb0`
stdout: 
stderr: Cloning into bare repository 'C:\Users\Administrator\AppData\Local\Pub\Cache\_temp\dir86ecccb0'...
fatal: unable to access 'https://github.com/thingsboard/esp_provisioning_softap/': Failed to connect to github.com port 443 after 21099 ms: Could not connect to serverexit code: 128
Failed to update packages.Exited (69).

解决办法：修改 hosts 文件（适用于 DNS 解析问题）

1. 找到 hosts 文件位置：

• Windows: C:\Windows\System32\drivers\etc\hosts
• macOS/Linux: /etc/hosts

2. 添加 GitHub 相关 IP（可通过https://ipaddress.com/查询最新 IP）：

140.82.114.4 github.com
199.232.69.194 github.global.ssl.fastly.net

3. 刷新 DNS 缓存：

• Windows: ipconfig /flushdns
• macOS: sudo killall -HUP mDNSResponder
• Linux: sudo systemctl restart network-manager

必须要刷新DNS设置，否则仍然不能访问。另外重启电脑后马上访问也会失败，过一会自动可以访问。目前按以上方式解决了windos 2 次。