WCF 调用错误：连接尝试失败，因为连接方在一段时间后没有正确响应

如何解决WCF 调用错误：连接尝试失败，因为连接方在一段时间后没有正确响应

我编写了一个托管在服务器 1 上的 WCF 服务。我可以从本地电脑成功调用它，但是当我尝试从服务器 2 调用相同的函数时，它显示以下错误：

发生了一个或多个错误。 （连接尝试失败，因为 关联方在一段时间后未正确响应，或 建立的连接失败，因为连接的主机未能 回应。

我的代码是：

 var client = new Sepidar_WcfService.SepidarClient();
 Task<Sepidar_WcfService.ISepidarServiceOutput> tStocks = client.GetStocksAsync("1","1");

   

堆栈跟踪是：

System.AggregateException：发生一个或多个错误。 （连接尝试失败，因为连接方在一段时间后没有正确响应，或建立连接失败，因为连接的主机没有响应）---> System.ServiceModel.CommunicationException：连接尝试失败，因为连接方没有响应一段时间后没有正确响应，或者建立连接失败，因为连接的主机没有响应---> System.Net.Http.HttpRequestException：连接尝试失败，因为连接方在一段时间后没有正确响应，或由于连接的主机未能响应而建立的连接失败 ---> System.Net.Sockets.SocketException: 连接尝试失败，因为连接方在一段时间后没有正确响应，或由于连接的主机失败而建立的连接失败回复 在 System.Net.Http.ConnectHelper.ConnectAsync（字符串主机，Int32 端口，CancellationToken 取消令牌） --- 内部异常堆栈跟踪结束 --- 在 System.Net.Http.ConnectHelper.ConnectAsync（字符串主机，Int32 端口，CancellationToken 取消令牌） 在 System.Threading.Tasks.ValueTask1.get_Result() at System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request,CancellationToken cancellationToken) at System.Threading.Tasks.ValueTask1.get_Result() 在 System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask1 creationTask) at System.Threading.Tasks.ValueTask1.get_Result() 在 System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage 请求，布尔 doRequestAuth，CancellationToken 取消令牌) 在 System.Net.Http.AuthenticationHelper.SendWithAuthAsync（HttpRequestMessage 请求，Uri authUri，ICredentials 凭据，布尔预验证，布尔 isProxyAuth，布尔 doRequestAuth，HttpConnectionPool 池，CancellationToken 取消令牌） 在 System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage 请求，CancellationToken 取消令牌) 在 System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage 请求，CancellationToken 取消令牌) 在 System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task1 sendTask,HttpRequestMessage request,CancellationTokenSource cts,Boolean disposeCts) at System.ServiceModel.Channels.HttpChannelFactory1.HttpClientRequestChannel.HttpClientChannelAsyncRequest.SendRequestAsync(Message message,TimeoutHelper timeoutHelper) --- 内部异常堆栈跟踪结束 --- 在 System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult 结果) 在 System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.End(SendAsyncResult 结果) 在 System.ServiceModel.Channels.ServiceChannel.EndCall(String action,Object[] outs,IAsyncResult result) 在 System.ServiceModel.Channels.ServiceChannelProxy.TaskCreator.c__DisplayClass1_0.b__0(IAsyncResult asyncResult) --- 内部异常堆栈跟踪结束 --- 在 System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification) at Nop.Services.Catalog.UpdateWarehouses.Execute() at Nop.Services.Tasks.Task.ExecuteTask() at Nop.Core.Caching.MemoryCacheManager.PerformActionWithLock(String key,TimeSpan expirationTime,Action action) in C:\Business\Projects\nopCommerce_4.10_Source\Libraries\Nop.Core\Caching\MemoryCacheManager.cs:line 205 at Nop.Services.Tasks.Task.Execute(Boolean throwException,Boolean ensureRunOncePerPeriod) ---> (Inner Exception #0) System.ServiceModel.CommunicationException: A connection attempt failed because the connected party did not properly respond after a period of time,or established connection failed because connected host has failed to respond ---> System.Net.Http.HttpRequestException: A connection attempt failed because the connected party did not properly respond after a period of time,or established connection failed because connected host has failed to respond ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time,or established connection failed because connected host has failed to respond at System.Net.Http.ConnectHelper.ConnectAsync(String host,Int32 port,CancellationToken cancellationToken) --- End of inner exception stack trace --- at System.Net.Http.ConnectHelper.ConnectAsync(String host,CancellationToken cancellationToken) at System.Threading.Tasks.ValueTask1.get_Result() 在 System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage 请求，CancellationToken 取消令牌) 在 System.Threading.Tasks.ValueTask1.get_Result() at System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask1 creationTask) 在 System.Threading.Tasks.ValueTask1.get_Result() at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request,Boolean doRequestAuth,CancellationToken cancellationToken) at System.Net.Http.AuthenticationHelper.SendWithAuthAsync(HttpRequestMessage request,Uri authUri,ICredentials credentials,Boolean preAuthenticate,Boolean isProxyAuth,HttpConnectionPool pool,CancellationToken cancellationToken) at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request,CancellationToken cancellationToken) at System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage request,CancellationToken cancellationToken) at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task1 sendTask、HttpRequestMessage 请求、CancellationTokenSource cts、Boolean disposeCts） 在 System.ServiceModel.Channels.HttpChannelFactory`1.HttpClientRequestChannel.HttpClientChannelAsyncRequest.SendRequestAsync(Message message,IAsyncResult result) 在 System.ServiceModel.Channels.ServiceChannelProxy.TaskCreator.c__DisplayClass1_0.b__0(IAsyncResult asyncResult)

任何帮助都会被感谢！

解决方法

我发现问题了，问题是，我尝试用http调用WCF服务，而服务客户端有https协议。因此该问题与“同源政策”概念有关。