WCF Service in IIS bindings - web-services

Question

I have inherited a WCF project which is hosted under IIS. Its part of a regular website i.e. there are human usable pages as well.
The site is configured in IIS with the following 2 bindings:
1: https://www.example.com/
2: http://www.example.com:8080/
If I visit http://www.example.com:8080/my-service.svc?wsdl I get a WSDL file returned as expected.
If I visit https://www.example.com/my-service.svc?wsdl I get told I need to visit http://www.example.com:8080/my-service.svc?wsdl to create a client.
There is no binding section under system.serviceModel in web.config.
What I want to know is, how does the service know it is associated with the second IIS binding and not the first.
system.ServiceModel follows:
<system.serviceModel>
<extensions>
<behaviorExtensions>
<add name="FormsAuthBehavior" type="My-WCF.FormsAuthBehaviorExtensionElement, EcobuttonWebService" />
</behaviorExtensions>
</extensions>
<behaviors>
<serviceBehaviors>
<behavior name="FormsAuthenticated">
<!--To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment-->
<serviceMetadata httpGetEnabled="true" />
<!--To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information-->
<serviceDebug includeExceptionDetailInFaults="false" />
<!--Pre-authenticates client with server to generate FormsAuthentication cookie. Cookie is submitted with each WCF request.-->
<!--NB: set throwsSecurityExceptions="false" when updating service references in client apps.-->
<FormsAuthBehavior throwsSecurityExceptions="false" />
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" aspNetCompatibilityEnabled="true" />
<services>
<service name="My-Service" behaviorConfiguration="FormsAuthenticated" />
</services>
</system.serviceModel>

Answer 1

Configure WCF Service for HTTP Transport Security
<bindings>
<basicHttpBinding>
<binding name="secureHttpBinding">
<security mode="Transport">
<transport clientCredentialType="None"/>
</security>
</binding>
</basicHttpBinding>
</bindings>
Specify your service and service endpoint as shown in the following XML.
<services>
<service name="MySecureWCFService.Service1">
<endpoint address=""
binding="basicHttpBinding"
bindingConfiguration="secureHttpBinding"
contract="MySecureWCFService.IService1"/>
<endpoint address="mex"
binding="mexHttpsBinding"
contract="IMetadataExchange" />
</service>
</services>
Enable httpsGetEnabled
<serviceBehaviors>
<serviceMetadata httpsGetEnabled="true"/>
</serviceBehaviors>
References:
MSDN
Seven simple steps to enable HTTPS on WCF WsHttp bindings