<behavior name="MyServiceBehavior">
        <customWebHttp/>                  
</behavior>

<system.serviceModel>       
<services>      
<service behaviorConfiguration="REST.WCF.WCFServiceBehavior" name="REST.WCF.WCFService">                
<endpoint address="" binding="webHttpBinding"  behaviorConfiguration="MyServiceBehavior" contract="REST.WCF.IWCFService">          
<identity>            
<dns value="localhost" />          
</identity>        
</endpoint>        
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />      
</service>    
</services>    
<behaviors>            
<endpointBehaviors>                
<behavior name="MyServiceBehavior">                    
<customWebHttp/>                  
</behavior>    
</endpointBehaviors>            
<serviceBehaviors>                
<behavior name="REST.WCF.WCFServiceBehavior">          
<!-- 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"/>        
</behavior>      
</serviceBehaviors>    
</behaviors>        
<extensions>      
<behaviorExtensions>        
<add name="customWebHttp" type="REST.WCF.CustomHttpBehaviorExtensionElement,REST.WCF"/> 
</behaviorExtensions>    
</extensions>  
</system.serviceModel>

<add name="customWebHttp" type="REST.WCF.CustomHttpBehaviorExtensionElement, REST.WCF, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/>