1.4 Relationship to Other Protocols

The Retrieval Protocol uses HTTP [RFC2616] as a transport.

The Peer Content Caching and Retrieval Framework uses the Retrieval Protocol [MS-PCCRR] and Discovery Protocol [MS-PCCRD] to discover peers when in distributed mode, and to query and download content from other peers. The framework also uses the Content Information data structure as specified in [MS-PCCRC].

Protocol stack diagram

Figure 1: Protocol stack diagram