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Gnutella2?
Anenga writes "A Windows (and somewhat WINE compatible) Gnutella client, Shareaza, has released a public preview of its next version which includes a re-designed Gnutella protocol they call "Gnutella2".
Gnutella2 (or "G2") dumps the Gnutella broadcast model and uses a new global searching method with UDP connections. It also features compression to limit hub-to-hub (G2 Ultrapeers) bandwidth, Tiger Tree Hashing etc. Shareaza has released a small description of the revised protocol here, but plans to release a full spec to the GDF after the release of v1.7 Final. Gnutella2, which is really a revised Gnutella protocol, will also be free and open for anyone to use in their clients. Shareaza and G2 may give Gnutella - an open and free P2P protocol which has been
struggling to keep up with the times against
Kazaa, eDonkey and other P2P
spin-offs - the stability and power it needs to attract the closed and
commercial FastTrack Network users when or if the network folds."
While you have a point, I must point out Napster wasn't strictly a peer to peer network system. Napster had a centralised set of servers, and was only peer to peer in the sense that it utilised the bandwidth of those sharing to upload those files to you and vice versa. As far as I know, these centralised servers are in fact what led to litigation against napster.
True peer to peer networks like Gnutella have no real centralised points: the process of discovery of new nodes does not require a a centralised server or servers, unlike Napster.
Be kind. There are too many mean people out there already.
Is the Gnutella Web Caching System. It allows clients to find other gnutella peers without any sort of central gnutella server.
Let's hope that this gnew version of gnutella will be better and more scalable than the previous one.
Points from the gnutella2.com site:
Level One: A New Protocol
Gnutella2 introduces a flexible new protocol to support current and future P2P technologies. Packets are compact binary trees of named data items, which allow multi-vendor information nesting and augmentation, selective digital signing and other exciting features. Existing data structures can be modified and improved without disrupting deployed software, and advanced topics such as UNICODE support are handled in a uniform manner.
Level Two: A New Data Transport Architecture
Gnutella2 provides two interdependent data transport mechanisms: reliable compressed TCP streams, and an unreliable and semi-reliable UDP transport provider. The combination of these two systems allow higher level G2 constructs to take maximum advantage of network conditions to deliver data packets quickly and efficiently, with or without assured delivery, within bandwidth requirements and without unnecessary overhead.
Level Three: A New Set of Base Services
Gnutella2 takes full advantage of the first two levels to deliver an exciting new set of distributed peer-to-peer services. Controlled global object searching is implemented using an iterative walker approach, with selective out of band response delivery and translation. Combined with an abstract component interest/response query model, this system goes beyond what is available in any other P2P platform. The Gnutella Addressing System (GAS) provides the ability to reach arbitary nodes based on a known identifier, regardless of their connection method.
Level Four: A New Implementation Standard
One of the problems facing the legacy Gnutella network was the varying level of support for critical network features in different clients. The Gnutella2 Standard requires clients to implement the first two levels completely, as well as the dual transport providers with some form of intelligent bandwidth control, 1-bit universal QHT, simple search response, basic metadata (at minimum), simple query language, link compression, root tigertree as the primary URN, HTTP/1.1, partial transfer and sharing. If able to operate as a hub, the full set of generic routing rules must be supported. Support for G1 is recommended but not required.
CLICK ME!
I'm surprised that no one has mentioned it, but giFT is a very nice open protocal modeled after the fasttrack network. (originally it used the actual fasttrack network, but now they use an open protocol called OpenFT)
Check it out at http://gift.sourceforge.net
The ncurses based frontend giFTcurs is very nice, but there also are graphical and even web-based frontends to it.
I use it under linux and have been very happy with it.
--Avoid metagame thinking, browse with scores hidden (This sig is in violation of itself)
I'm a engineer at Lime Wire LLC so I can debunk much of this submission. Shareaza's Gnutella2 isn't so much the second iteration of Gnutella - instead, think of it as a improved Gnutella . In fact, the improvements were actually proposed by Lime Wire LLC (consult the GDF and look for messages about 'GUESS'). The GUESS protocol is a UDP based protocol we developed to allow for Gnutella network crawls/walks. We introduced it for public comment on the GDF *before* releasing it because we understand that Gnutella, as a open protocol, needs support from all Gnutella developers. I'm not sure what exactly Shareaza has implemented (because they HAVE NOT released the specs yet), but it sounds a lot like GUESS.
So this isn't so much Gnutella2 as a improved Gnutella. Perhaps one day it will evolve into Gnutella2 more formally, but at the moment this talk of Gnutella2 is premature.
smd4985
I've had nothing but problems with giFT. Finally started booting back into Windows and using Kazaa.
If you have a *nix box (even an apple if it's OS X) you can use mldonkey which is a very nice client. You can operate it remotely from another box, it uses both edonkey and overnet protocols simultaneously, it's partially open source (there is a key component kept secret for security reasons, the one flaw in thes protocols is that they require trusted clients unfortunately) and it really gives you the best of edonkey and overnet both, as well as supporting the move to overnet since anything you're downloading from edonkey or sharing out will also be shared to overnet.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Friends don't let friends enable ecmascript.
Sure, it's useable, but it's horrific. Kazaa's is aweful, eDonkey's just blows and WinMX, urgh, don't get me started.
Admitially I never really investigated Gnutella after trying the original Nullsoft version. The UI was ok, if a little plain, but the time it took to hook up to a bunch of stable nodes, the slow download time and frequency of dropped downloads just put me off.
So really, all i'm asking is that whilst you're concentrating on making an excellent protocol, please don't employ a 7 year old with a crayon to do the UI. Hell, I'd happily help out on an OSS project, however I can't use VC++ to save my life and most people wouldn't like submissions on Visual Basic frm's - i'll probably end up standing on the sidelines shouting but having no-one listen.
There are a few examples of technically inferior applications that do better than others simply because their UI is clean, consistent and works. Lets have that, please!
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> I even got my girlfriend, boss, and brother using Bearshare.
Congratulations, you made them install quite a bit of spyware too.
I would recommend something like XoloX, which has absolutely no spyware.
Same progress for me - i.e. Kazaa to eDonkey to Overnet. The biggest advantage with eDonkey over Kazaa IMHO are the "MD5 URL's" or whatever you should call them, where clicking on an URL adds the download to the eDonkey queue, by using the MD5-style checksum. So you're 100% sure it's not a fake file. You can also be 100% sure that's it's not a partial file as well.
I guess the downside with eDonkey is that it requires up to date server lists, although that's a minor hassle really. And that's where the serverless Overnet comes in, which owns Kazaa any time except for the occasional music searches perhaps.
Beware: In C++, your friends can see your privates!
If an orchestra records a classic that recording is (of course) copyrighted.
it's in my head
it's partially open source (there is a key component kept secret for security reasons, the one flaw in thes protocols is that they require trusted clients unfortunately)
That's not true anymore. Since emule, anonther edonkey client, released its source code, the mldonkey author decided to open-source the remaining code.
-- To bloody go where no man has gone before.
Gnucleus has been a solid Gnutella client for me.
They are also working on GnucDNA a component for building your own P2P applications.
http://www.kubuntu.org/
As far as I know, the mp3s here are free. But many recordings are indeed copyrighted.
Also, in case anyone is interested in sheet music that fell out of copyright, check out this link.
Download link http://download.shareaza.com:8825/Shareaza1701.exe seems impossibly slow -- I'm getting 276 bytes per sec on my DSL connection. For anyone who wants to check out the 1.7 prerelease, here's a mirror:
http://nstrom.chaosnet.org/Shareaza1701.exe
The difference is in the link. In your example, the user links to Amazon from another web site. In this case, TopMoxie does nothing. If the user goes directly to Amazon by typing it in a web browser, though, TopMoxie does prompt the user for whether or not he or she would like the commission to go to LimeWire.
Adam Fisk
To be fair, Shareaza has no spyware either. What's more, it's almost the *only* P2P client that doesn't eat up half the system resources - Kazaa, Bearshare, XoloX, Grokster (which installs more spyware than I thought was humanely possible anyway) and many others are all huge and silly. Shareaza (and at least one other Windows Gnutella client, though I forget the name) will happily multitask.
FWIW, Bearshare doesn't install insane amounts of spyware. Okay, it's not as good as the 100%-free clients, but they seem to have said "Hey, let's sell an improved version of this to make money" rather than, "Hey, let's piss off all our users to make money"