Awaiting a service task gets TaskCanceledException: A task was canceled
<p>I have one app (UWP - Win10) and a Windows service. </p>

<p>The service is running in background, and they were both developed in C#. "callAsync" is the method on the service. I am using await to call it on the client.</p>

<pre><code>var obj = await callAsync(10);
</code></pre>

<p><strong>The problem is:</strong>
If this call takes less than 1min40s (100 seconds), then everything works ok. But if it takes more than 1min40s, then an exception will occur "TaskCanceledException: A task was canceled".</p>

<p>I have search SO and the web but still could not find any indication on how to resolve this "timeout" issue. I have added all the "open/close/receive/send" timeout flags on both app and service app.config, although the exception that is thrown in that case is different.</p>

<p>If I try with a simple delay in the client: </p>

<pre><code>await Task.delay(200000); 
</code></pre>

<p>it works properly.</p>

<p>This service was added through VS2015 "Add Service Reference". I have also "attached" to the server and the server keeps running and prints in the console before and after logs (to confirm that everything is ok). </p>

<p>What am I missing? What configuration and where do I need to change so that the task can run for more than 1 minute and 40 seconds?</p>

<p><strong>CODE:</strong></p>

<p><strong>Example of Server Pseudo-Code:</strong></p>

<p><em>Interface File:</em></p>

<pre><code>[ServiceContract(Namespace="http://.....")]
interface ICom {

   [OperationContract]
   int call(int val);

}
</code></pre>

<p><em>Service.cs</em></p>

<pre><code>    public ServiceHost serviceHost = null;
    public BlaBlaWindowsService()
    {
        ServiceName = "BlaBlaWindowsService";
    }

    public static void Main()
    {
        ServiceBase.Run(new BlaBlaWindowsService());
    }


    protected override void OnStart(string[] args)
    {
        if (serviceHost != null)
        {
            serviceHost.Close();
        }

        serviceHost = new ServiceHost(typeof(BlaBlaService));

        serviceHost.Open();
    }

    protected override void OnStop()
    {
        if (serviceHost != null)
        {
            serviceHost.Close();
            serviceHost = null;
        }
    }
}

[RunInstaller(true)]
public class ProjectInstaller : Installer
{
    private ServiceProcessInstaller process;
    private ServiceInstaller service;

    public ProjectInstaller()
    {
        process = new ServiceProcessInstaller();
        process.Account = ServiceAccount.LocalSystem;
        service = new ServiceInstaller();
        service.ServiceName = "BlaBlaWindowsService";
        Installers.Add(process);
        Installers.Add(service);
    }
}
</code></pre>

<p><em>BlaBlaService.cs</em></p>

<pre><code>class TPAService : ITPAComunication {

   public int call(int val) {

      System.Threading.Thread.Sleep(200000)
      return 0;
   }

}
</code></pre>

<p><em>App.config file:</em></p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt;
&lt;configuration&gt;
&lt;system.serviceModel&gt;
&lt;bindings&gt;
&lt;binding name="ServiceTimeout" closeTimeout="00:10:00" receiveTimeout="00:10:00" openTimeout="00:10:00" sendTimeout="00:10:00"/&gt;
&lt;/bindings&gt;
        &lt;services&gt;
          &lt;service name="BlaBla.Service.Service"
                   behaviorConfiguration="ServiceBehavior"&gt;
            &lt;host&gt;
              &lt;baseAddresses&gt;
                &lt;add baseAddress="http://localhost:8000/BlaBla/service"/&gt;
              &lt;/baseAddresses&gt;
            &lt;/host&gt;
            &lt;endpoint address=""
                      binding="basicHttpBinding"
                      bindingConfiguration="ServiceTimeout"
                      contract="BlaBla.Service.ICom" /&gt;
            &lt;endpoint address="mex"
                      binding="mexHttpBinding"
                      contract="IMetadataExchange" /&gt;
          &lt;/service&gt;
        &lt;/services&gt;
        &lt;behaviors&gt;
          &lt;serviceBehaviors&gt;
            &lt;behavior name="ServiceBehavior"&gt;
              &lt;serviceMetadata httpGetEnabled="true"/&gt;
              &lt;serviceDebug includeExceptionDetailInFaults="False"/&gt;
            &lt;/behavior&gt;
          &lt;/serviceBehaviors&gt;
        &lt;/behaviors&gt;
      &lt;/system.serviceModel&gt;
    &lt;/configuration&gt;
</code></pre>

<p><strong>Example of App pseudo-code:</strong></p>

<pre><code>System.ServiceModel.EndpointAddress epa = new System.ServiceModel.EndpointAddress("http://localhost:8000/blabla/service");

System.ServiceModel.BasicHttpBinding bhb = new System.ServiceModel.BasicHttpBinding();

Timespan t = new TimeSpan(0, 10, 0);

bhb.SendTimeout = t; bhb.ReceiveTimeout =t; bhb.OpenTimeout = t; bhb.CloseTimeout = t;

Blabla.ComunicationClient com = new Blabla.ComunicationClient(bhb, epa);

var obj = await com.callAsync(int val);

return obj;
</code></pre>

<p><strong>UPDATE #1</strong></p>

<p>This situation only happens in UWP. I have created a similar WinForms project and everything works as expected. This means that it is probably something related to UWP.</p>