Question

I have an application binding on port IP1:80 of a machine with 5 virtual IP addresses (IP1-IP5)

I then try to bind a self-hosted WCF service to IP5:80 but get an AlreadyInUseException. I guess WCF is trying to bind to the entire IP range, despite the fact that I specify a specific one.

Is this known behaviour?

            [start application that binds to IP1:80]


            string baseAddress = "http://IP5:80/binary";

            ServiceHost host = new ServiceHost(typeof(BinaryService),
                                               new Uri(baseAddress));


            host.AddServiceEndpoint(typeof(IBinaryService), GetBinding(), "")
                                   .Behaviors.Add(new WebHttpBehavior());

            host.Open(); // exception

Answer 1

Found the solution:

Run netsh
Type http
Type add iplisten ipaddress=IP5:80

After this, self-hosted WCF app will not try and bind to the full range on 80, just IP5!