P2P java file transfer

Question

First off, I am VERY new to Java, but wanted to know if it was possible. I could not find any tutorials or explanation online:

Is it possible to send/receive files not through a server, but P2P. I want a file, when selected, to be sent to another PC running the client. What is the best method of doing this? Is there something I have missed?

(P.s. My first stackoverflow question, please be nice :D)

Sure, it's possible. But generally firewalls make it difficult/impossible to do so, especially if either client is behind a NAT gateway. — Marc B, Sep 08 '11 at 17:57
Search here on SO for P2P + Java. There are a lot of questions and answers already. — Perception, Sep 08 '11 at 17:58

score 3 · Accepted Answer · edited May 23 '17 at 12:12

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Give JXTA a try, it should satisfy all your needs.

Or try a DHT implementation for the P2P part and implement the file transfer either over the DHT or just the sesssion initiation by DHT and some other kind of direct file transfer.

openkad
JDHT

(DHT selection taken from this question)

edited May 23 '17 at 12:12

Community

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answered Sep 08 '11 at 18:14

flob

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Thank you for the help :) Although I find the 170 page guide very daunting, I will definitely be having a look at JXTA. Do you have any particular resources/tutorials that helped you start off?(Link for any others out there: http://www.javaworld.com/javaworld/jw-05-2005/jw-0509-jxta.html?page=1) – 3lionz Sep 09 '11 at 14:58
This one looks good, http://www.ibm.com/developerworks/wireless/library/wi-jxta/ but I have no particular HowTos i would recommend, sorry :/ – flob Sep 09 '11 at 15:04

score 0 · Answer 2 · answered Jul 27 '12 at 14:09

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Pastry provides a DHT. Its done Java and very easy to use. Its storage system is known as PAST and a tutorial can be found here : https://trac.freepastry.org/wiki/tut_past

I've had a great experience working with it.

answered Jul 27 '12 at 14:09

Travis

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score 0 · Answer 3 · answered Sep 08 '11 at 18:18

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Maybe you want to have a look at http://www.adp-gmbh.ch/blog/2004/november/15.html

Every Peer in a P2P-system will have both roles (receiver AND sender that is each peer is server AND client at the same time).

answered Sep 08 '11 at 18:18

ashiaka

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score 0 · Answer 4 · answered Sep 08 '11 at 21:16

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It is certainly possible. Check the Free Pastry implementation

answered Sep 08 '11 at 21:16

Piyush Mattoo

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score 0 · Answer 5 · answered Apr 02 '12 at 14:20

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JXTA are a little complex to someone new in Java and it has some limitations with scalability and perfomance of his communications layers. Another option is XMPP, if a pure P2P is not mandatory.

answered Apr 02 '12 at 14:20

Thiago Vieira

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P2P java file transfer

5 Answers5