问题描述
在公司网络中通过防火墙解除阻止以访问 Google Translate API（高级版）需要哪些 url？
目前未阻止的是： *.googleapis.com 和 accounts.google.com
但我仍然收到以下错误：
System.Reflection.TargetInvocationException：调用的目标已抛出异常。 ---> Grpc.Core.RpcException: Status(StatusCode="Unavailable",Detail="无法连接到所有地址",DebugException="Grpc.Core.Internal.CoreErrorDetailException: { created":"@1612337108.132000000","description":"选择子频道失败","file":"T:\src\github\grpc\workspace_csharp_ext_windows_x64\src\core\ext\filters\client_channel\client_channel.cc","file_line":4090,"referenced_errors":[{ "创建":"@1612337108.132000000","description":"无法连接到所有地址","file":"T:\ src\github\grpc\workspace_csharp_ext_windows_x64\src\core\ext\filters\client_channel\lb_policy\pick_first\pick_first.cc","file_line":394,"grpc_status":14} ]} ") at System.Runtime.ExceptionServices.ExceptiondispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Grpc.Core.Internal.AsyncCall2.UnaryCall(TRequest msg) at Grpc.Core.DefaultCallInvoker.BlockingUnaryCall[TRequest,TResponse](Method2 方法，字符串主机，CallOptions 选项，TRequest 请求）在 Grpc.Core.Interceptors.InterceptingCallInvoker.b_ _3_0[TRequest,TResponse](TRequest req,ClientInterceptorContext2 ctx) at Grpc.Core.ClientBase.ClientBaseConfiguration.ClientBaseConfigurationInterceptor.BlockingUnaryCall[TRequest,TResponse](TRequest request,ClientInterceptorContext2 context,BlockingUnaryCallContinuation2 continuation) at Grpc.Core.Interceptors.InterceptingCallInvoker.BlockingUnaryCall[TRequest,TResponse](Method2 method,String host,CallOptions options,TRequest request) at Google.Cloud.Translate.V3.TranslationService.TranslationServiceClient。 TranslateText(TranslateTextRequest request,CallOptions options) at Google.Api.Gax.Grpc.ApiCall.GrpcCallAdapter2.CallSync(TRequest request,CallSettings callSettings) at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__displayClass1_02.b__0(TRequest request,CallSettings callSettings) at ABG.Foundation.LanguageTranslator.GoogleTranslator.TranslateData(String sourceLanguage,String targetLanguage,List1 content) in D:\a\1\s\src\Foundation\LanguageTranslator\code\GoogleTranslator\GoogleTranslator.cs:line 106 at ABG.Foundation.LanguageTranslator.GoogleTranslator.TranslateData(List1 items,String sourceLanguage,String targetLanguage) in ...
注意：相同的代码和设置在公司网络之外也能正常工作。
解决方法
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