Flutter 开发 网络 问题 改变环境变量：

C:\flutter\flutter\bin\flutter.bat --no-color pub get

Downloading package sky_engine... 208ms

Downloading package sky_engine... 110ms

Failed to download https://storage.googleapis.com/flutter_infra_release/flutter/9064459a8b0dcd32877107f6002cc429a71659d1/sky_engine.zip. Ensure you have network connectivity and then try again.

HandshakeException: Connection terminated during handshake

Process finished with exit code 1

改变环境变量

mac:

export PUB_HOSTED_URL=https://pub.flutter-io.cn

export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn