Mapping required for RFC to HTTP

Hi,

I am doing RFC to HTTP. I think for RFC, there is no need of Message Interface. The RFC which we Import into IR acts as Data Type, Message Type and Message Interface.

What type of Message Interface should I Define for HTTP.

I have Defined a Data Type for HTTP. and RFC will have TWO Structures, One is for Request and the Other is Response.

Between which messages I should define the Mappings ?

Regards,

Varun