Support for BEP-5: DHT Protocol about bt

[atomashpolskiy]

Hi @karuppiah7890 ! Thanks for your interest, it's really important for me that people are getting interested in Bt.

It's absolutely a number one feature that I'm planning to include in Bt. I've done a bit of a research some time ago, and it turned out that there are just a few Mainline DHT implementations in Java, and frankly neither of those seems to be user-friendly/straight-forward to use, esp. as an embedded library.

That said, I think that the DHT support fits somewhat better into a 1.x release, rather than the initial one. I'm mostly done with preparing the initial release, so the API should be more or less stable from now on (excluding the bt-tests module, I'm going to refactor it in the nearest time). You can give it a try if you want, and feel free to ping me if you have any questions/suggestions.

[karuppiah7890]

I think it makes sense. TTorrent is famous and I just tried it. and It's not even working, I don't know how to get it work. Bad Examples. And no API Docs.

When will Bt docs be available ?

[atomashpolskiy]

Latest JavaDoc is built automatically for every new commit to master. Please see http://atomashpolskiy.github.io/bt/javadoc/latest/
CLI client is also a good place to start from (shows the most basic usage example): https://github.com/atomashpolskiy/bt/blob/master/bt-cli/src/main/java/bt/cli/CliClient.java

I'm also planning to provide more formal documentation with the 1.0 release, which will hopefully be before the New Year.

[karuppiah7890]

Nice. Checking on it

And do provide this link in the website, I don't think I saw any direct link. And do provide it in README too, for now

[the8472]

I've done a bit of a research some time ago, and it turned out that there are just a few Mainline DHT implementations in Java, and frankly neither of those seems to be user-friendly/straight-forward to use, esp. as an embedded library.

I am the author of mldht. It's intended to be used as a library, but I don't have many downstream consumers so it's mostly run in a few specialized stand-alone uses which I manage myself.

If you have any feedback what makes it difficult to use I might be able to address those issues.

[atomashpolskiy]

@the8472 , thanks for showing up! Yeah, I've considered using your implementation, but it's not published in Maven Central. Also I recall that in order to build it locally I had to manually add eddsa library and remove the8472.test.Bep44 class due to compilation errors. If you could release a stable version, I'd be happy to take another look and experiment with using it!

[atomashpolskiy]

@the8472 , I just took another look at mldht and finally remembered what my main issue with it was. It's GPL license, which is incompatible with Apache that is used by Bt. May I ask you why have you decided to go with a copyleft license?

[the8472]

That was the license the original maintainer chose before I took it over many years ago. Some of the commit history was lost so I'm not sure how many LoC authored by him remain. But I can ask him if he would let me relicense it.

[the8472]

I had to manually add eddsa library and remove the8472.test.Bep44 class due to compilation errors.

That shouldn't be necessary. Travis compiles it just fine. Maybe you forgot to do a recursive clone or the build-helper-maven-plugin was not applied properly?

Currently the patched version of ed25519 is necessary until str4d/ed25519-java#17 makes it into a release. BEP44 key handling is specifies the key format in a way that is not covered by the previously available constructors.

[atomashpolskiy]

This was indeed my fault. Hadn't seen git submodules until this day. git clone --recursive did the trick, now the project builds just fine. Thanks!

That was the license the original maintainer chose before I took it over many years ago. ... But I can ask him if he would let me relicense it.

This would be incredibly nice of you!

[str4d]

I should be making a new release that includes str4d/ed25519-java#17 shortly 😃

[atomashpolskiy]

Hey @str4d , cool! A quite remarkable release train it is going to be :)

[str4d]

New release should be dropping this weekend.

[the8472]

Btw, you can include it as maven dep via jitpack

[karuppiah7890]

Wow, nice to see Bt rising up with cool features :)

[atomashpolskiy]

Thanks mate ;)