peer to peer torrent network

1. SEMINAR ON-PRESENTED
BY:-
D BIPUL LOMGA

2. INTRODUCTION
CLIENT- SERVER SYSTEM (CENTRALIZED)
PEER TO PEER NETWORK SYSTEM (DECENTRALIZED)
COMPARISONS
WHAT IS “BIT TORRENT”?
BIT TORRENT COMPONENTS
THE ARCHITECTURE OF BIT TORRENT
WORKING
ADVANTAGES
DISADVANTAGES
CONCLUSION

3. BIT TORRENT IS CREATED BY BRAM COHEN IN 2001.
IT IS PEER TO PEER (P2P)FIL TRANSFERING SYSTEM.
IT IS USED TO TRANSFER VERY HUGE FILE.
BIT TORRENT PROVIDES PROTOCOL TO ALL TORRENT CLIENTS.
THIS IS MOST POPULAR AND EFFICIENT FILE TRASFERRNG SYSTEM.
MORE EFFICIENT THAN CLIENT –SERVER SYSTEM.

4. Cl i ent - Server Comput i ng or networki ng i s a
di s t ri but ed appl i cat i on archi t ec t ure That
part i t ons t asks or work l oad between
servi ce provi des ( server) And servi ces
reques t ers cal l ed c l i ent s…

5. Client send get message to server.
Server send files.
Transfer is handled by FTP & HTTP.

6. TRAFFIC CONGESTION.
CRASHES WHOLES SYSTEM WHEN SERVER IS FAILS.

7. PEER
each peer directly connected to other peer.
it is used for large file transfer.
peer uploads data while downloading any files.
File to be transfer is divided into equal size of pieces.
These pieces are downloaded from different peer parallely.

8. Bit torrent client software.
.torrent file or Metainfo file.
Leechers
Peers
Seeds
Tracker
Piece(of a file)
Data
Torrent index server

9. Client s/w-
• Program which sites on a peers computer and implement the protocol.{bit
torrent.}
• Reads .torrent file
It controls all operations such as.-
•Reads information contents in .torrent file.
•After reading .torrent file it send message to tracker to send list of peers.
•Connected to peers
•Keep all records of the file which is receiving.
ich is receiving.

11. It has extension as .torrent
It is extremely small(up to 100 kb).
It is downloaded from torrent index server.
Contains the information that points to the actual file and
people who are sharing it.

12. •Info
Size of piece
Total no. of piece
SHA number

13. THERE ARE THE CLIENTS WHO HAS ENTIRE FILE.
THEY UPLOADS FILES TO OTHERS PEERS.

15. It is the client which is responsible for file transfer.
Downloading speed of any file using torrent depends
on a number of peers.
Peers=leech + seed

16. 1 2 3 4 5 6 7 8
The file which to be download is divided similar size of pieces.
These pieces are downloaded parallel.
Each pieces of download different peers.

17. Tracker is the server.
It contains all database about peers of a torrent
It provides all list of peers which are associated with a paticular torrent
These trackers are mentioned in the metafile.
Client s/w sends request to send list of peers.
Connected all peers.

18. Source of .torrent file
Torrent search engine

19. Trackers-Tracks peer in torrent provides tracker list
Torrent-Group of peers exchanging chunks of a file

21. •Bit torrent is an open –source program offers a spyware –and
nuisance –free installation.
•Allows users to share large amounts of data in a short span of
time.
•Dicourages “freeloading” by rewarding fastest uploaders.
•The more popular a file is –the more people want a copy of it –the
faster it can be downloaded,because there are more places to gets
pieces of it.

22. •Bit torrent is a great protocols to distribute large files.
•Bit torrent was conceived as a way of distributing large file
more quickly,efficiently and reliably.
•Bit torrent is a peer-to-peer file sharing system that is quickly
becoming the method of choice for publishing and sharing large
files across the internet.

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