CommonRequest iot.cn-shenzhen.aliyuncs.com The operation has timed out.

[L60008028]

硬件环境：==========================================
Linux raspberrypi 5.4.72-v7l+ #1356 SMP Thu Oct 22 13:57:51 BST 2020 armv7l GNU/Linux
donet环境：=====================================
root@raspberrypi:/home/pi/ali_iot_service# dotnet --info
.NET SDK (反映任何 global.json):
Version: 5.0.101
Commit: d05174dc5a

运行时环境:=====================================
OS Name: raspbian
OS Version: 10
OS Platform: Linux
RID: linux-arm
Base Path: /root/dotnet/sdk/5.0.101/

Host (useful for support):
Version: 5.0.1
Commit: b02e13abab

.NET SDKs installed:
3.1.403 [/root/dotnet/sdk]
5.0.101 [/root/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 3.1.9 [/root/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.1 [/root/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.1.9 [/root/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.1 [/root/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

引用的SDK:aliyun-net-sdk-iot
代码：=====================================
public void TestQueryProductList()
{

		QueryProductListRequest request = new QueryProductListRequest();
		request.CurrentPage = 1;
		request.PageSize = 10;
		request.IotInstanceId = IotInstanceId;
		request.SetProductDomain(Domain);
		QueryProductListResponse response = _client.GetAcsResponse(request);
		Console.WriteLine(response.Success);
		Console.WriteLine(response.ErrorMessage);
		Console.WriteLine(response.Code);

		QueryProductListResponse.QueryProductList_Data data = response.Data;

		Console.WriteLine(data.CurrentPage);
		Console.WriteLine(data.PageSize);
		Console.WriteLine(data.PageCount);
		Console.WriteLine(data.Total);

		List<QueryProductListResponse.QueryProductList_Data.QueryProductList_ProductInfo> productList = data.List;
		Console.WriteLine(productList.Count);
	}

异常：=====================================
Unhandled exception. Aliyun.Acs.Core.Exceptions.ClientException: SDK.WebException : HttpWebRequest WebException occured, the request url is iot.cn-shenzhen.aliyuncs.com System.Net.WebException: The operation has timed out.
at System.Net.HttpWebRequest.GetResponse()
at Aliyun.Acs.Core.Http.HttpResponse.GetResponse(HttpRequest request, Nullable1 timeout) at Aliyun.Acs.Core.DefaultAcsClient.DoAction[T](AcsRequest1 request, Boolean autoRetry, Int32 maxRetryNumber, String regionId, AlibabaCloudCredentials credentials, Signer signer, Nullable1 format, List1 endpoints)
at Aliyun.Acs.Core.DefaultAcsClient.DoAction[T](AcsRequest1 request, Boolean autoRetry, Int32 maxRetryNumber, IClientProfile profile) at Aliyun.Acs.Core.DefaultAcsClient.DoAction[T](AcsRequest1 request)
at Aliyun.Acs.Core.DefaultAcsClient.GetAcsResponse[T](AcsRequest`1 request)
at ALI_IOT_SERVICE.IotCloudAPI.TestQueryProductList() in E:\D\C#\ALI_IOT_SERVICE\IotCloudAPI.cs:line 55
at ALI_IOT_SERVICE.Program.Main(String[] args) in E:\D\C#\ALI_IOT_SERVICE\Program.cs:line 46

[WELL-E]

同样的问题：

win10+vs2019
aliyun-net-sdk-iot v7.7.0

Iot SDK for .NET Samples!
SDK.WebException
HttpWebRequest WebException occured, the request url is iot.aliyuncs.com System.Net.WebException: The operation has timed out.
at System.Net.HttpWebRequest.GetResponse()
at Aliyun.Acs.Core.Http.HttpResponse.GetResponse(HttpRequest request, Nullable`1 timeout)