Contract requires Duplex, but Binding 'BasicHttpBinding' doesn't support it or isn't configured properly to support it

While creating / implementing a duplex service, there is a possibility of getting the error

Contract requires Duplex, but Binding 'BasicHttpBinding' doesn't support it or isn't configured properly to support it

Reason: name mentioned in the web config is different. Type changing it to complete namespace.

e.g: Your application name space is Devqueries.PollingDuplex.Web.Service.Controller, the config is as follows

<service behaviorConfiguration="NotificationServiceBehaviorConfig" name="Devqueries.PollingDuplex.Web.Service.Controller.NotificationService">

        <endpoint address="" binding="customBinding" bindingConfiguration="Notification" contract="Devqueries.PollingDuplex.Web.Service.Controller.INotificationService"/>

        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>

</service>

 

<service behaviorConfiguration="NotificationServiceBehaviorConfig" name="Devqueries.PollingDuplex.Web.Service.Controller.NotificationService"> <endpoint address="" binding="customBinding" bindingConfiguration="Notification" contract="Devqueries.PollingDuplex.Web.Service.Controller.INotificationService"/> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </p>