webHttpBinding using webMessageEncoding: how to configure? - wcf

Question

I have a REST WCF service. Its using a webHttpBinding and the configuration looks like this:
<service name="IndexingService.RestService" behaviorConfiguration="IndexingService.Service1Behavior">
<endpoint
address=""
binding="webHttpBinding"
bindingConfiguration="CustomMapper"
contract="IndexingService.IIndexingService"
behaviorConfiguration="webby"/>
</service>
The CustomMapper is used to apply a custom WebContentTypeMapper, which I tried to configure like this:
<binding name="CustomMapper">
<webMessageEncoding webContentTypeMapperType="IndexingService.CustomContentTypeMapper, IndexingService" />
<httpTransport manualAddressing="true" />
</binding>
But I cannot figure out where in my web.config I should insert these lines:
If I put these lines below I get an error, because webMessageEncoding is not a recognized element.
If I put the lines below a custom binding tag, I get an error that wsHttpBinding does not have a CustomMapper defined!?
Can somebody explain how to use a custom type mapper together with webHttpBinding?

Answer 1

If you define a complete custom binding (as you do here with CustomMapper):
<binding name="CustomMapper">
<webMessageEncoding webContentTypeMapperType=
"IndexingService.CustomContentTypeMapper, IndexingService" />
<httpTransport manualAddressing="true" />
</binding>
then you need to use that custom binding in your service endpoint - not webHttpBinding! This config section does not define just a bindingConfiguration!
Try this config here:
<system.serviceModel>
<bindings>
<customBinding>
<binding name="CustomMapper">
<webMessageEncoding webContentTypeMapperType=
"IndexingService.CustomContentTypeMapper, IndexingService" />
<httpTransport manualAddressing="true" />
</binding>
</customBinding>
</bindings>
<services>
<service name="IndexingService.RestService"
behaviorConfiguration="IndexingService.Service1Behavior">
<endpoint
address=""
binding="customBinding"
bindingConfiguration="CustomMapper"
contract="IndexingService.IIndexingService"
behaviorConfiguration="webby"/>
</service>
</services>
</system.serviceModel>
Marc