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Hi all,
I've a strange problem in my app. When i call a webmethod from my ws (IIS 10 but always in IIS 7) randomly i receive TimeoutException. The same WS is used in an old VS 2010 application that work correctly without errors. The ws work well also if i call from browser. This is the stack trace:
at System.ServiceModel.Channels.HttpRequestChannel+HttpChannelRequestAsyncResult.WaitEnd () [0x0001b] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs:504
at System.ServiceModel.Channels.HttpRequestChannel.EndRequest (System.IAsyncResult result) [0x00022] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs:351
at System.ServiceModel.Channels.HttpRequestChannel.Request (System.ServiceModel.Channels.Message message, System.TimeSpan timeout) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs:73
at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Request (System.ServiceModel.Channels.Message msg, System.TimeSpan timeout) [0x00008] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:585
at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Request (System.ServiceModel.Description.OperationDescription od, System.Boolean isAsync, System.Object[]& parameters, System.ServiceModel.OperationContext context) [0x00069] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:537
at System.ServiceModel.MonoInternal.ClientRuntimeChannel.DoProcess (System.Reflection.MethodBase method, System.String operationName, System.Boolean isAsync, System.Object[]& parameters, System.ServiceModel.OperationContext context) [0x00031] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:502
at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Process (System.Reflection.MethodBase method, System.String operationName, System.Boolean isAsync, System.Object[]& parameters, System.ServiceModel.OperationContext context) [0x0001e] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:485
at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Process (System.Reflection.MethodBase method, System.String operationName, System.Object[] parameters, System.ServiceModel.OperationContext context) [0x00002] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:470
at System.ServiceModel.ClientRealProxy.DoInvoke (System.Runtime.Remoting.Messaging.IMessage inputMessage) [0x000b8] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRealProxy.cs:111
at System.ServiceModel.ClientRealProxy.Invoke (System.Runtime.Remoting.Messaging.IMessage inputMessage) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.ServiceModel/System.ServiceModel/ClientRealProxy.cs:86
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke (System.Runtime.Remoting.Proxies.RealProxy rp, System.Runtime.Remoting.Messaging.IMessage msg, System.Exception& exc, System.Object[]& out_args) [0x000d6] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/System.Runtime.Remoting.Proxies/RealProxy.cs:279
Any ideas?
Thanks
Nicola
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(12.8, 87%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJ%3C/text%3E%3C/svg%3E)
The same WS is used in an old VS 2010 application that work correctly without errors
Hi, NicolaBracchini-8307. What the version of VS do you use now? After updating to the last version, the VS may work for different frameworks. Please try to use the packages with lastest stable version.
And what's the ws? Could you post the related code that causes the issue?
Hi, thanks for the reply.
I'm using the Microsoft Visual Studio Community 2019 Versione 16.8.5 with FrameWork 4.8.03752
The WS is a WCF Service with a lot of OperationContract, that is running in an Windows Server with IIS 10.
The code that cause the issue is variable...random!
The last error has occurred in the line:
[System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
WSGiac.LeggiArticoloInventarioResponse WSGiac.WService.LeggiArticoloInventario(WSGiac.LeggiArticoloInventarioRequest request)
{
return base.Channel.LeggiArticoloInventario(request); // ERROR OCCURRED HERE
}
The problem is that the TimeoutException, occurs randomly, never in the same line.
The same WCF service, called and consumed from other platform (SOAPUI, VS2010, WebBrowser) work perfectly. It seems that the problem occurs only in Xamarin Android.
Many thanks!
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(198.4, 94%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETD%3C/text%3E%3C/svg%3E)
Hi,@Nicola Bracchini , You can try increasing the sendtimeout and receivetimeout properties in your configurations.
Hi @Theobald Du-MSFT ,
thanks for the reply. I've already tried to increase the value you propose. Unfortunately the problem still happen.
I've tried sniffing the packet sended and received to search something malformed. But everithing is ok. The strange things is that, when the error occurs, the packet is sended / received correctly. So I think that the problem is not the WCF, but the standard connector.
Thanks!
UPDATE.
After various tests (Dowgraded Android target version, upgraded Android target version, changed wcf from SOAP to RESTful) nothing seems to change.
The strangest thing is that in an Android 8.1, based device, the problem is not present.
So i think that is a bug in VS2019!
Someone have experience in same problem?
Thanks!