Re: Device Discovery and Telehash

Hi Tibor,

this sounds extremely interesting to me. 

Have you looked into making it work with standard discovery mechanisms like CoAP Resource Directory?
For example by storing the entries of the RD into a DHT?

Ciao!
- - Jaime Jimenez

> On 08 Feb 2016, at 18:29, Tibor Pardi <tibor@zovolt.com> wrote:
> 
> Hi Drasko
> 
> We have started to implement a P2P device discovery module in the https://github.com/w3c/web-of-things-framework <https://github.com/w3c/web-of-things-framework> project. Our P2P discovery module uses the a Kademlia DHT table, the implementation and concept is very similar to Telehash. I investigated Telehash as well, I understand IBM's Adept (before it was abandoned) selected Telehash, but there are very little Nodejs support for Telehash which I could integrate at the time. Our underlying or ECDSA modules are based on Bitcoin crypto as well and use a Bitcoin crypto library. 
> 
> Device discovery is one of the main area which need to be addressed, and an open source, decentralised, P2P device discovery mechanism that operates without using a proprietary cloud or client/server module is one possible way to manage the topic. In fact I believe P2P is the best possible solution for device discovery. P2P by definition addresses requirements such as scalability and high availability without the need to spend a fortune on load balancing and cluster infrastructure.
> 
> There is a brief readme to explain our P2P device discovery module at https://github.com/w3c/web-of-things-framework/tree/master/examples/p2p_demo <https://github.com/w3c/web-of-things-framework/tree/master/examples/p2p_demo>
> 
> Please note I am updating the P2P module at the DEV branch with optimizing the module, providing tests for ECDSA and ECDH and using TCP/IP by default instead of UDP (several users reported that their mobile operators blocks UDP traffic). 
> 
> Regards,
> Tibor
> 
> 
> 
> On Mon, Feb 8, 2016 at 3:46 PM, Drasko DRASKOVIC <drasko.draskovic@gmail.com <mailto:drasko.draskovic@gmail.com>> wrote:
> Hi Dave,
> I was wondering what is the IoT framework approach towards device discovery?
> 
> Iotivity and AllJoyn approach this problem, but are closed standards.
> Do we have open technologies that we can use in decentralized manner
> for WOT Framework?
> 
> One new interesting p2p protocol is Telehash: http://telehash.org/ <http://telehash.org/>,
> specified by Jeremie Miller (XMPP creator - and we all know how much
> industry loves XMPP for NAT traversals ;)). This protocol is based on
> Bitcoin Blockchain for encryption (and some king od DNS resolution
> (https://github.com/telehash/blockname <https://github.com/telehash/blockname>), and I guess it can be used
> for decentralized device discovery.
> 
> BR,
> Drasko
> 
>