Question

I am working with the HttpSelfHostServer with asp net mvc 4 web api

When I create the server, I specify a base address, usually somthing like http://foo.com:8080

Lets just say that this server has multiple ips 10.0.0.0, 10.0.0.1, 10.0.0.2

we will also say that

• http://foo.com points to 10.0.0.0
• http://bar.com points to 10.0.0.1
• http://baz.com points to 10.0.0.2

if the HttpSelfHostServer is bound to http://foo.com:8080 why can I still access it at http://bar.com:8080 and http://baz.com:8080

here is the code that instantiates the server

    public Server(string name, Uri baseAddress)
    {
        Name = name;
        TimeCreated = DateTime.Now;
        BaseAddress = baseAddress;
        var config = new HttpSelfHostConfiguration(BaseAddress);

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new {id = RouteParameter.Optional}
            );

        // Create server
        _server = new HttpSelfHostServer(config);
    }    

Answer 1

you can modify this behavior by changing the HostNameComparisionMode property on HttpSelfHostConfiguration. By default, the value is StrongWildCard.

config.HostNameComparisonMode = System.ServiceModel.HostNameComparisonMode.StrongWildcard;

You can read more about this setting here:
http://msdn.microsoft.com/en-us/library/system.servicemodel.hostnamecomparisonmode.aspx