Question

How?

I only saw hostHeader in ServiceDefinition.csdef Bindings Section.
Where do I put IP?

Answer 1

It is not possible to add a binding to 127.0.0.1 in your ServiceDefinition.csdef file. Instead, you’ll have to add a binding node to the appropriate site section of D:\Windows\System32\inetsrv\config\applicationHost.config.

You could do this in two ways:

1. Use the Microsoft.Web.Administration assembly to alter the applicationHost.config. For example you could add the following code to the OnStart method of your RoleEntryPoint derived class:

   Microsoft.Web.Administration.Site site = server.Sites.FirstOrDefault(s => s.Name.Equals("NameOfWebsite"));
   
   Microsoft.Web.Administration.Binding binding = site.Bindings.FirstOrDefault(b => b.Protocol == "http");
   site.Bindings.Remove(binding);
   site.Bindings.Add("*:80:", "http");
   server.CommitChanges();
   

2. Use D:\Windows\System32\inetsrv\appcmd.exe to alter applicationHost.config in a startup task (see this link).

Out of curiosity, why do you want to add the 127.0.0.1 binding to your web role?