Dotnet Firebase Cloud Messaging 被防火墙阻止

Question

我有一个问题运行本地环境中的 .NET Core worker 服务，默认情况下会阻止所有传出请求。该服务正在尝试通过 FirebaseAdmin 包 (https://github.com/Firebase/firebase-admin-dotnet) 发送推送通知，在我们托管在 Azure 中的测试环境中，一切正常。

我不知道哪些 URL 需要在防火墙中打开，所以让通知继续。我收到的唯一错误消息没有帮助。

2020-04-17 12:42:19.979 +02:00 [ERR] Error sending notification 13f54141-0455-4829-afa0-172e7963965e
System.Net.Http.HttpRequestException: No such host is known.
 ---> System.Net.Sockets.SocketException (11001): No such host is known.
   at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at Google.Apis.Http.ConfigurableMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
   at Google.Apis.Auth.OAuth2.Requests.TokenRequestExtenstions.ExecuteAsync(TokenRequest request, HttpClient httpClient, String tokenServerUrl, CancellationToken taskCancellationToken, IClock clock)
   at Google.Apis.Auth.OAuth2.ServiceAccountCredential.RequestAccessTokenAsync(CancellationToken taskCancellationToken)
   at Google.Apis.Auth.OAuth2.TokenRefreshManager.RefreshTokenAsync()
   at Google.Apis.Auth.OAuth2.TokenRefreshManager.ResultWithUnwrappedExceptions[T](Task`1 task)
   at Google.Apis.Auth.OAuth2.TokenRefreshManager.<>c.<GetAccessTokenForRequestAsync>b__10_0(Task`1 task)
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.Tasks.Task.<>c.<.cctor>b__274_0(Object obj)
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location where exception was thrown ---
   at Google.Apis.Auth.OAuth2.TokenRefreshManager.GetAccessTokenForRequestAsync(CancellationToken cancellationToken)
   at Google.Apis.Auth.OAuth2.ServiceAccountCredential.GetAccessTokenForRequestAsync(String authUri, CancellationToken cancellationToken)
   at Google.Apis.Auth.OAuth2.ServiceCredential.InterceptAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at Google.Apis.Http.ConfigurableMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
   at FirebaseAdmin.Util.ErrorHandlingHttpClient`1.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at FirebaseAdmin.Util.ErrorHandlingHttpClient`1.SendAndReadAsync(HttpRequestMessage request, CancellationToken cancellationToken)

我查看了 google-api-dotnet 包，但似乎他们使用的是他们自己的日志系统，该系统未显示在我们的日志文件中。

有谁知道如何获得有关此处被阻止的主机的更多信息？

Answer 1

您可能需要打开：

accounts.google.com
oauth2.googleapis.com
fcm.googleapis.com

Dotnet Firebase Cloud Messaging 被防火墙阻止

Dotnet Firebase Cloud Messaging blocked by firewall

google-api-dotnet-client

.net-core

asp.net-core

firebase-admin