v ideo d iscussion 1: c opyright and p2p a pplications 23 sep 2009 1dt052
TRANSCRIPT
VIDEO DISCUSSION 1:COPYRIGHT AND P2P
APPLICATIONS
23 Sep 2009
1DT052
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PURE P2P ARCHITECTURE
no always-on server arbitrary end systems
directly communicate peers are
intermittently connected and change IP addresses
Examples: File sharing Bit-Torrent (BT) e-mule
peer-peer
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P2P: CENTRALIZED INDEX
original “Napster” design
1) when peer connects, it informs central server: IP address content
2) Alice queries for “Hey Jude”
3) Alice requests file from Bob
centralizeddirectory server
peers
Alice
Bob
1
1
1
12
3
2: Application Layer 4
FILE DISTRIBUTION: BITTORRENT
tracker: tracks peers participating in torrent
torrent: group of peers exchanging chunks of a file
obtain listof peers
trading chunks
peer
P2P file distribution
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BITTORRENT file divided into 256KB chunks. peers join torrent network and download peers upload chunks to other peers. peers may come and go
CASE: THE PIRATE BAY TRIAL 21 Nov 2003 - Established
31 May 2006 - The website's servers in Stockholm were raided by Swedish police, causing it to go offline for three days
15 Nov 2008 - The Pirate Bay announced that it had reached over 25 million unique peers.
17 Apr 2009 - Peter Sunde, Fredrik Neij, Gottfrid Svartholm and Carl Lundström were found guilty of assistance to copyright infringement and sentenced to one year in prison and payment of a fine of SEK 30M
30 Jun 2009 - Swedish advertising company Global Gaming Factory X AB announced their intention to buy the site for SEK 60M
15 Aug 2009 - An anonymous uploader started to share a BitTorrent file containing the whole index for The Pirate Bay
24 Aug 2009 - Swedish court ordered the upstream provider Black Internet to block traffic to the site. The website was inaccessible for 3 hours and it was claimed that all services were restored within 24 hours.
VIDEO
Copyright and P2P: Global Collision, National Responses
Source: http://www.researchchannel.org/prog/displayevent.aspx?fID=569&rID=11084
DISCUSSION QUESTIONS
Do you think that P2P applications infringe copyright? Will the following parties be liable? People who host and maintain the sites People who post the advertisements Users who upload the data Users who download the data ISP who provides the communication media
For (1) the site / (2) users to download and upload
How would you solve the copyright problem for P2P applications?
Any other views and opinions on this topic…
SHORT ARTICLE
Write a 1-2 pages summary to express your own views on copyright and P2P applications
Submit your article to the course collection box by 30 Sep 2009 (Wednesday) or email to [email protected] in plain text in the email without attachment