Xamarin with WCF has a timeout error - wcf

Question

My app uses WCF to transfer data from server and app.It works well all along.But recently,if the app does not operate after a period of time,there's always throwing a timeout exception.When the timeout exception was thrown,winform application can call WCF normally。If restart debug,the app can call WCF again;and after a while,it throw timeout exception again.What can I do for this?
My code like this:
// CreateBinding
private static BasicHttpBinding CreateBasicHttp()
{
BasicHttpBinding binding = new BasicHttpBinding
{
Name = "basicHttpBinding",
MaxBufferSize = 2147483647,
MaxReceivedMessageSize = 2147483647
};
binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.None;
TimeSpan timeout = new TimeSpan(0, 0, 30);
binding.SendTimeout = timeout;
binding.OpenTimeout = timeout;
binding.ReceiveTimeout = timeout;
return binding;
}
// Create Endpoint
private static EndpointAddress CreateEndPoint(string serviceName)
{
string serviceUrl = App.RemoteUrl + serviceName + ".svc";
EndpointAddress EndPoint = new EndpointAddress(serviceUrl);
return EndPoint;
}
// Create binder
public static WCFBinder GetBinder<T>()
{
WCFBinder binder;
Type t = typeof(T);
string serviceName = t.Name.Substring(1, t.Name.Length - 1);
binder.Binding = CreateBasicHttp();
binder.EndPoint = CreateEndPoint(serviceName);
return binder;
}
// Create a client
var binder = SDHCommonMethod.GetBinder<IAAA001BLLService>();
IAAA001BLLService asc = new AAA001BLLServiceClient(binder.Binding, binder.EndPoint);
// Call WCF
var obj = await Task.Factory.FromAsync(asc.BeginSelectAAA001, asc.EndSelectAAA001, dto, TaskCreationOptions.None);

Answer 1

The code is right. In vs2017,it can work.Maybe my vs2015 has something wrong.