在本地主机上使用` `firebase serve`自动重新连接

Question

我正在使用firebase serve在我的计算机上托管一个firebase项目。当我的网络中断时，我得到下面的错误，程序退出。是否有启用自动重新连接的--option，或者以某种方式手动捕获错误并重新连接？我希望应用程序继续尝试连接，直到我的互联网恢复在线。

>        throw er; // Unhandled 'error' event
>        ^
> 
>  Error: 14 UNAVAILABLE: Name resolution failed for target dns:firestore.googleapis.com:443
>      at Object.callErrorFromStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call.js:30:26)
>      at Object.onReceiveStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\client.js:328:49)
>      at Object.onReceiveStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\client-interceptors.js:304:181)
>      at Http2CallStream.outputStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call-stream.js:116:74)
>      at Http2CallStream.maybeOutputStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call-stream.js:155:22)
>      at Http2CallStream.endCall (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call-stream.js:141:18)
>      at Http2CallStream.cancelWithStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call-stream.js:450:14)
>      at ChannelImplementation.tryPick (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\channel.js:237:32)
>      at ChannelImplementation._startCallStream (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\channel.js:267:14)
>      at Http2CallStream.start (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call-stream.js:428:22)
>  Emitted 'error' event on ClientReadableStreamImpl instance at:
>      at Object.onReceiveStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\client.js:328:28)
>      at Object.onReceiveStatus (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\client-interceptors.js:304:181)
>      [... lines matching original stack trace ...]
>      at Http2CallStream.start (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\call-stream.js:428:22)
>      at BaseStreamingInterceptingCall.start (C:\Users\Tower\IdeaProjects\team-up-server\functions\node_modules\@grpc\grpc-js\build\src\client-interceptors.js:276:1
9) {
>    code: 14,
>    details: 'Name resolution failed for target dns:firestore.googleapis.com:443',
>    metadata: Metadata { internalRepr: Map {}, options: {} }
>  }

Answer 1

firebase serve已弃用。

试试firebase emulators:start；我在使用它时没有遇到任何开/关/在线问题。

文档：https://firebase.google.com/docs/rules/emulator-setup

但是，请注意，错误消息中的错误与您正在进行的Google API调用有关。

如果你正在调用一个在线API而不是一个模拟的API，你的应用本身需要能够被设置为重试或处理失败的调用。

firebase的某些方面确实可以在本地模拟；同样，请参阅上面链接的文档。