멀티 WCF IP 구성하기

멀티로 IP 구성하기



http://robseder.wordpress.com/2011/01/31/iis-hosted-wcf-services-on-a-server-with-multiple-ip%E2%80%99s/


        <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> 


여러개의 서비스를 만들고 endpoint 를 만들어서 구성

Although I’ve done a fair amount with WCF, it’s been mostly around hosting services in end-user applications or in Windows services. Every time I’ve tried to host a WCF service in IIS, things suddenly got very complicated and I seemed to spend a lot of time troubleshooting. Well today, I needed to host a WCF service in IIS and ran across such a problem: 

This collection already contains an address with scheme http. There can be at most one address per scheme in this collection. 

What does that mean? Well, I know the service just sort of piggy-backs on the port and virtual application of the ASP.NET app, so I assumed that the service would get its address and port from IIS. Well, after some digging around a bit, I found this blog post:http://www.robzelt.com/blog/2007/01/24/WCF+This+Collection+Already+Contains+An+Address+With+Scheme+Http.aspx 

The problem occurs when the service is hosted in IIS, and that IIS server has multiple IP addresses assigned. This results in multiple baseAddresses. The answer is to create a custom service host. The blog post above didn’t go into all the detail, so I wanted to write this down (mostly for my own benefit), here.

Web.Config: <?xml version="1.0"?> <configuration>     <system.web>         <compilation debug="true" targetFramework="4.0" />     </system.web>     <system.serviceModel>         <behaviors>             <serviceBehaviors>                 <behavior name="">                     <serviceMetadata httpGetEnabled="true" />                     <serviceDebug includeExceptionDetailInFaults="false" />                 </behavior>             </serviceBehaviors>         </behaviors>         <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />     </system.serviceModel> </configuration>

Service (ExampleService) and Contract (IExampleService) – NO CHANGE CustomServiceHost.cs: public class CustomServiceHost : ServiceHost

{

    public CustomServiceHost(Type serviceType, params Uri[] baseAddresses)

        : base(serviceType, baseAddresses)

    { }

    protected override void ApplyConfiguration()

    {

        base.ApplyConfiguration();

    }

}

CustomServiceHostFactory.cs: public class CustomServiceHostFactory : ServiceHostFactory

{

    protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)

    {

        CustomServiceHost customServiceHost =

            new CustomServiceHost(serviceType, baseAddresses[0]);

        return customServiceHost;

    }

}

ExampleService.svc: 

<%@ ServiceHost Language="C#" Debug="true"

    Factory="SederSoftware.WcfExample.CustomServiceHostFactory"

    Service="SederSoftware.WcfExample.ExampleService" CodeBehind="ExampleService.svc.cs" %>

So to piece this all together… When you invoke the ExampleService.svc, it calls the "Factory" specified – CustomerServiceHostFactory. That factory attempts to start a service host – and it specifies just ONE of the IP addresses. Arguably, you could add some logic here to filter which one/ones you want to run from, but for my purposes, just pulling the first one is fine. 

From that point on, the rest is like a regular WCF service. So there – you’re welcome, Future Robert, who is not going to remember this in a couple of weeks! Also, the problem I worked with today was with VS2005 and .NET 3.0 – and I just tried this now with .NET 4.0 and it works fine for both.