wcf Service could not be activated

Question

It's a .svc IIS hosted service with ssl and membership. My wcf client reports: ``` System.ServiceModel.ServiceActivationException was unhandled Message="The requested service, 'https://www.greenjump.nl/WebServices/OrderService.svc' could not be activated. See the server's diagnostic trace logs for more information." Source="mscorlib" ``` On the server I get: System.ArgumentException This collection already contains an address with scheme http. There can be at most one address per scheme in this collection. Parameter name: item The strange thing is this only happens on the production server, the same code and config on the localhost development server works fine. I only change the endpoint address and from computer name to www.webdomain.com more server trace ``` System.ArgumentException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 This collection already contains an address with scheme http. There can be at most…

Accepted Answer

The problem is caused by IIS handling of multiple host headers. Like blowdart said here. error: This collection already contains an address with scheme http.

and somewhat more elaborate here http://forums.silverlight.net/forums/p/12883/274592.aspx

using the first baseAddresses[0] is not an option for me because my baseAddresses were http://localhost/WebServices/OrderService.svc http://www.greenjump.nl/WebServices/OrderService.svc https://vps2051.xlshosting.net/WebServices/OrderService.svc in this order of course I could do [1] but I don't like this configuration dependency.

It seems my problem is somewhat more complex due to the https binding, this is the ServiceHostFactory I came up with:

```
 public class MyServiceHostFactory : ServiceHostFactory
    {

protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
        {
            Uri webServiceAddress = baseAddresses[0]; //default to first

if (HttpContext.Current != null) //this only works when aspNetCompatibilityEnabled=true
            {
                string host = HttpContext.Current.Request.Url.Host;
                var goodAddress = baseAddresses.FirstOrDefault(a => a.Host == host);//try to find address with same hostname as request
                if(goodAddress!=null)
                {
                    webServiceAddress = goodAddress;
                }
                Type[] sslServices = { typeof(OrderService)  };//add all https services here
                if (sslServices.Any(s => s == serviceType))
                {
                    UriBuilder builder = new UriBuilder(webServiceAddress);
                    builder.Scheme = "https";
                    builder.Port = 443; //fails if you use another port
                    webServiceAddress = builder.Uri;
                }
            }
            return new ServiceHost(serviceType, webServiceAddress);
        }
    }
```

Still this feels hacky, and should be solved by microsoft.

wcf Service could not be activated

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