Duplex Federation Binding Configuration not working - wcf

Question

i am developing a duplex federated wcf service, my federation scenario is working fine but when i tried to make it duplex to an exception is thrown "The incoming policy could not be validated"
i think its issue with my configurations but am still not able to trace out the mistake,
Following are my configuration:
For my main service:
<bindings>
<customBinding>
<binding name='MyServiceBinding'>
<security authenticationMode='SecureConversation'>
<secureConversationBootstrap authenticationMode='IssuedTokenForCertificate'/>
<issuedTokenParameters>
<issuerMetadata address='http://localhost:62751/TokenIssuer.svc/mex'/>
</issuedTokenParameters>
</security>
<compositeDuplex/>
<oneWay/>
<httpTransport/>
</binding>
</customBinding>
</bindings>
<services>
<service name="MyService.MyService"
behaviorConfiguration='MyServiceBehavior'>
<endpoint address="Response"
binding="customBinding"
bindingConfiguration='MyServiceBinding'
contract="MyService.IMyService" />
<endpoint address="mex"
binding="mexHttpBinding"
contract="IMetadataExchange" />
</service>
</services>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
STS Configurations
and 3. Client Configurations
<system.serviceModel>
<bindings>
<customBinding>
<binding name='MyServiceBinding'>
<security authenticationMode='SecureConversation'>
<secureConversationBootstrap authenticationMode='IssuedTokenForCertificate'/>
<issuedTokenParameters>
<issuer address='http://localhost:62751/TokenIssuer.svc' binding='wsHttpBinding' bindingConfiguration='MyTokenIssuer'/>
</issuedTokenParameters>
</security>
<compositeDuplex/>
<oneWay/>
<httpTransport/>
</binding>
</customBinding>
<wsHttpBinding>
<binding name="MyTokenIssuer">
<security mode="Message"/>
</binding>
</wsHttpBinding>
</bindings>
<behaviors>
<endpointBehaviors>
<behavior name="GetResponseClientBehavior">
<clientCredentials>
<serviceCertificate>
<authentication certificateValidationMode="PeerOrChainTrust"/>
</serviceCertificate>
</clientCredentials>
</behavior>
</endpointBehaviors>
</behaviors>
<client>
<endpoint name="WSFederationHttpBinding_IMyService" address="http://localhost:53121/MyService.svc/Response" binding="customBinding" bindingConfiguration="MyServiceBinding" behaviorConfiguration="GetResponseClientBehavior" contract="IMyService">
<identity>
<certificateReference storeLocation="CurrentUser" storeName="TrustedPeople" x509FindType="FindBySubjectName" findValue="BookStoreService.com"/>
</identity>
</endpoint>
</client>
</system.serviceModel>