🐛[BUG] 开启DNS加速失败

### 🐛 描述(Description)
开启DNS加速失败

### 📷 复现步骤(Steps to Reproduce)
1. 开启steam++
2. 显示客户端错误1006，由于远程计算机积极拒绝访问。。。。。。

### 📄 日志信息(Log Information)
```
2022-08-11 00:27:39.2649|Error|CloudServiceClient|ApiConn Fail(1006)，Url：api/Accelerate/All | System.Net.Http.HttpRequestException: 由于目标计算机积极拒绝，无法连接。 (127.0.0.1:26501)
---> System.Net.Sockets.SocketException (10061): 由于目标计算机积极拒绝，无法连接。
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
at System.Net.Sockets.Socket.g__WaitForConnectWithCancellation|277_0(AwaitableSocketAsyncEventArgs saea, ValueTask connectTask, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(HttpRequestMessage request)
at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.GetHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.EstablishProxyTunnelAsync(Boolean async, HttpRequestHeaders headers, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.AddHttp2ConnectionAsync(HttpRequestMessage request)
at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.GetHttp2ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at Microsoft.Extensions.Http.Logging.LoggingHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at Microsoft.Extensions.Http.Logging.LoggingScopeHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
at System.Application.Services.CloudService.ApiConnection.SendCoreAsync[TRequestModel,TResponseModel](Boolean isAnonymous, Boolean isApi, CancellationToken cancellationToken, HttpMethod method, String requestUri, TRequestModel requestModel, Boolean responseContentMaybeNull, Boolean isSecurity, Boolean isShowResponseErrorMessage, String errorAppendText)
2022-08-11 00:27:39.3261|Error|HttpService|SendAsync Fail, requestUri: https://steam-chat.com/miniprofile/218730955/json | System.Net.Http.HttpRequestException: 由于目标计算机积极拒绝，无法连接。 (127.0.0.1:26501)

```

Start with the CloudServiceClient and CloudService.ApiConnection.SendCoreAsync entries shown in the log, then investigate why requests to 127.0.0.1:26501 are refused for api/Accelerate/All. Reproduce the DNS acceleration failure and determine whether the local service or proxy connection is unavailable; done means acceleration can be enabled without client error 1006.

Written by the indexing model from the issue text.