JXTA Protocols

Peer Discovery Protocol (PDP): Resource Searching - Discover other peer advertisements: Peers, Peer Groups, Pipes, etc.

Peer Resolver Protocol (PRP): Generic Query Service - Allows a peer to send a search query to another peer. Basic request/response message to another peer. The resolver is used to support other communications protocols such as the router and discovery protocol. Resolver also allows for the propagation of queries to other peers (unknown to the originating peer).

Peer Information Protocol (PIP): Monitoring - Get the status of another peer.

Peer Membership Protocol (PMP): Security - Join or leave a group. This protocol also supports Authentication/Authorization of peers into peer groups and the creation of credentials for the group.

Pipe Binding Protocol (PBP): Addressable Messaging - Creates the physical pipe endpoint to a physical peer.  Creates a communications path between one or more peers.

Rendezvous Protocol (RVP): Propagation Messaging - Responsible for propagating messages within JXTA groups.

Peer Endpoint Protocol (PEP): Routing - Creates routes between peers. Uses gateways between peers to create a path consisting of one or more pipe protocols suitable for creating a pipe. This protocol searches for gateways that allow network barriers to be traversed.