I've ran into a really weird problem. I am building a heavily distributed application where each app instance can either be a Host and/or Client to a WCF-Service (very p2p-like). Everything works fine, as long as the Client and the targeted Host (By which I mean the app, not the Host, since currently everything runs on a single computer (so no Firewall problems etc.)) are NOT the same. IF they are the same, then the app hangs for exactly 1 Minute and then throws a TimeoutException. WCF-Logging did not produce anything helpful. Here is a small app which demonstrates the Problem:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
var binding = new NetTcpBinding();
var baseAddress = new Uri(@"net.tcp://localhost:4000/Test");
ServiceHost host = new ServiceHost(typeof(TestService), baseAddress);
host.AddServiceEndpoint(typeof(ITestService), binding, baseAddress);
var debug = host.Description.Behaviors.Find<ServiceDebugBehavior>();
if (debug == null)
host.Description.Behaviors.Add(new ServiceDebugBehavior { IncludeExceptionDetailInFaults = true });
else
debug.IncludeExceptionDetailInFaults = true;
host.Open();
var clientBinding = new NetTcpBinding();
var testProxy = new TestProxy(clientBinding, new EndpointAddress(baseAddress));
testProxy.Test();
}
}
[ServiceContract]
public interface ITestService
{
[OperationContract]
void Test();
}
public class TestService : ITestService
{
public void Test()
{
MessageBox.Show("foo");
}
}
public class TestProxy : ClientBase<ITestService>, ITestService
{
public TestProxy(NetTcpBinding binding, EndpointAddress remoteAddress) :
base(binding, remoteAddress) { }
public void Test()
{
Channel.Test();
}
}
What am I doing wrong?
Regards, Pharao2k
You put everything in the same thread. You can't have a client and a server on the same thread, at least not in this kind of code.
If you do this instead, for example:
ThreadPool.QueueUserWorkItem(state =>
{
var clientBinding = new NetTcpBinding();
var testProxy = new TestProxy(clientBinding, new EndpointAddress(baseAddress));
testProxy.Test();
});
your code should work better.
PS: even on the same machine you can have firewall problems - well, that's a feature, not a problem :-).