Peer System:gnutella

Peer System:gnutella

GNUTELLA is the first demonstrated distributed Peer-to-peer system.

A major issue for Napster is the indirect infringement, so Gnutella eliminates the servers altogether then uses the client to search and retrieve, so the client also acts as a servers, So Gnutella's client is also called servents (which is stitched together by server and client)

Neighbors means that the peer knows their IP address and port number and can send them a message (such as TCP).

A graph called an overlay graph was created in peers, which is called an overlay graph because it's a graph that's overlaid on top of the Internet

Each edge in the diagram is essentially the internet path of the underlying internet, but given the overlay, actual path in the underlying internet is not relevant, as long as these peers can talk to each Other.

How to find the specified file

The five main message types:

Query message: Queries that contain keywords

Queryhit: A response to query

Ping: To ensure that the list of neighbors is up-to-date, use ping and pong message

Pont: To ensure that the list of neighbors is up to date, use ping and pong message

Push: For file transfer

All fields of the message we discussed above use small-end storage in addition to the IP address

Peer System:gnutella