为什么获取Grpc.Core.RpcException StatusCode=Unavailable，Detail="；“连接失败”；，使用Google Cloud Firestore 1.0.0-beta05 C#SetAsync？

我们在Google.Cloud.Firestore.1.0.0-beta05 NuGet包中使用C#，当我们尝试调用SetAsync时，总是会得到一个Grpc.Core.RpcException

详情：

Visual Studio 2017

.NET Framework V4.6.2

ASP.NET

版本：Google.Cloud.Firestore.1.0.0-beta05

发布日期：2018年6月7日星期四（6/7/2018）

环境变量已设置GOOGLE\u应用程序\u凭据

根据我们公司的设置，在web.config中配置代理

已设置环境变量http\u proxy和https\u proxy

有人能帮助我们理解为什么我们会得到以下结果吗

Grpc.Core.RpcException:Status（StatusCode=Unavailable，Detail=“Connect Failed”）

下面是相关的片段

任何帮助都将不胜感激

问候,

埃蒙恩

C#方法：

private async Task FirebaseSetAsync(string projectId)
{
    var database = FirestoreDb.Create(projectId: projectId);

    var docRef = database.Collection("users").Document("company");

    Dictionary<string, object> user = new Dictionary<string, object>
    {
        { "First", "Alan" },
        { "Middle", "Mathison" },
        { "Last", "Turing" },
        { "Born", 1912 }
    };

    try
    {
        var result = await docRef.SetAsync(user);
    }
    catch (Exception exception)
    {
        Log.Error("Exception.", exception);
    }
}

<system.net>
  <defaultProxy>
    <proxy proxyaddress="http://w.x.y.z:pppp/" />  
  </defaultProxy>
</system.net>

20:15:26.938 [   7] [(null)] ERROR FirebaseFive.Controllers.HomeController - Exception.
Grpc.Core.RpcException: Status(StatusCode=Unavailable, Detail="Connect Failed")
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass0_0`2.<<WithRetry>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Firestore.WriteBatch.<CommitAsync>d__15.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Firestore.DocumentReference.<SetAsync>d__24.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at FirebaseFive.Controllers.HomeController.<FirebaseSetAsync>d__1.MoveNext() in         

专用异步任务FirebaseSetAsync（字符串projectId）
{
var database=FirestoreDb.Create（projectId:projectId）；
var docRef=数据库、集合（“用户”）、文档（“公司”）；
字典用户=新字典
{
{“第一”，“艾伦”}，
{“中间”，“马蒂森”}，
{“最后”，“图灵”}，
{“出生”，1912}
};
尝试
{
var result=await docRef.SetAsync（用户）；
}
捕获（异常）
{
日志错误（“异常”，异常）；
}
}

web.config代码段：

private async Task FirebaseSetAsync(string projectId)
{
    var database = FirestoreDb.Create(projectId: projectId);

    var docRef = database.Collection("users").Document("company");

    Dictionary<string, object> user = new Dictionary<string, object>
    {
        { "First", "Alan" },
        { "Middle", "Mathison" },
        { "Last", "Turing" },
        { "Born", 1912 }
    };

    try
    {
        var result = await docRef.SetAsync(user);
    }
    catch (Exception exception)
    {
        Log.Error("Exception.", exception);
    }
}

<system.net>
  <defaultProxy>
    <proxy proxyaddress="http://w.x.y.z:pppp/" />  
  </defaultProxy>
</system.net>

20:15:26.938 [   7] [(null)] ERROR FirebaseFive.Controllers.HomeController - Exception.
Grpc.Core.RpcException: Status(StatusCode=Unavailable, Detail="Connect Failed")
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass0_0`2.<<WithRetry>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Firestore.WriteBatch.<CommitAsync>d__15.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Firestore.DocumentReference.<SetAsync>d__24.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at FirebaseFive.Controllers.HomeController.<FirebaseSetAsync>d__1.MoveNext() in         

日志文件片段：

private async Task FirebaseSetAsync(string projectId)
{
    var database = FirestoreDb.Create(projectId: projectId);

    var docRef = database.Collection("users").Document("company");

    Dictionary<string, object> user = new Dictionary<string, object>
    {
        { "First", "Alan" },
        { "Middle", "Mathison" },
        { "Last", "Turing" },
        { "Born", 1912 }
    };

    try
    {
        var result = await docRef.SetAsync(user);
    }
    catch (Exception exception)
    {
        Log.Error("Exception.", exception);
    }
}

<system.net>
  <defaultProxy>
    <proxy proxyaddress="http://w.x.y.z:pppp/" />  
  </defaultProxy>
</system.net>

20:15:26.938 [   7] [(null)] ERROR FirebaseFive.Controllers.HomeController - Exception.
Grpc.Core.RpcException: Status(StatusCode=Unavailable, Detail="Connect Failed")
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass0_0`2.<<WithRetry>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Firestore.WriteBatch.<CommitAsync>d__15.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Firestore.DocumentReference.<SetAsync>d__24.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at FirebaseFive.Controllers.HomeController.<FirebaseSetAsync>d__1.MoveNext() in         

20:15:26.938[7][（null）]错误FirebaseFive.Controller.HomeController-异常。
Grpc.Core.RpcException:状态（StatusCode=Unavailable，Detail=“连接失败”）
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd（任务任务）
在Google.Api.Gax.Grpc.ApiCallRetryExtensions.c_uudisplayClass0_0`2.d.MoveNext（）上
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在Google.Cloud.Firestore.WriteBatch.d_u15.MoveNext（）上
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在Google.Cloud.Firestore.DocumentReference.d_u24.MoveNext（）上
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在System.Runtime.CompilerServices.TaskAwaiter`1.GetResult（）中
在FirebaseFive.Controllers.HomeController.d_u1.MoveNext（）中

---

D:\Projects\Git\Firebase\FirebaseFive\FirebaseFive\Controllers\HomeController.cs:line 33

在谷歌一些人的感激帮助下，答案如下：

Firestore库/SDK使用HTTP/2.0协议进行通信，而我们公司的代理（squid缓存）不支持HTTP/2.0

现在我们必须看看是否可以获得Firestore和相关服务/域的IP地址列表，以便绕过这些地址的代理