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Supporting Multiple IIS Bindings Per Site

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MultiplBinding

If you see this error when you are hosting in IIS then most probably you have multiple IIS bindings per scheme in your web site. WCF in .Net Framework 3.0 ,out of the box, does not support multiple binding per site, but this can enabled by extending the System.ServiceModel.Activation.ServiceHostFactory,  and providing a CustomServiceHostFactory. CustomServiceHostFactory  picks the appropriate base address for the application.  The Factory attribute in the ServiceHost directive is set to the CustomSerivceHostFactory.

The only drawback is every developer hosting their application will need to change the svc file to provide the CustomServiceHostFactory, which picks the appropriate base address.

 

Sample Code

public class MultipleIISBindingSupportServiceHostFactory : ServiceHostFactory

{

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

{

      Uri[] requiredAddress = GetAppropriateBase(baseAddresses);

      return base.CreateServiceHost(serviceType, requiredAddress);

   }

Uri[] GetAppropriateBase(Uri [] baseAddresses)

{

        List<Uri> retAddress = new List<Uri>();

        foreach (Uri address in baseAddresses)

{

            if (address.DnsSafeHost == "localhost")

{

retAddress.Add(address);

}

}

return retAddress.ToArray();

}

}

In the svc file, fill in the Factory attribute

<%@ServiceHost Factory="NS.MultipleIISBindingSupportServiceHostFactory" Service="CalculatorService" %>

Comments

  • Anonymous
    August 01, 2007
    The comment has been removed

  • Anonymous
    February 11, 2008
    Background IIS has web sites, which are containers for virtual applications which contain virtual directories.

  • Anonymous
    February 11, 2008
    Background IIS has web sites, which are containers for virtual applications which contain virtual directories

  • Anonymous
    May 09, 2008
    [WCF] This collection already contains an address with scheme http...

  • Anonymous
    August 14, 2008
    Calling a WCF Service from Silverlight 2.0: Part Two

  • Anonymous
    November 19, 2008
    As a self-confessed crayon wielder I tend not to get involved in the washing machine technology of web