[Commotion-dev] Serval Mesh Helper Device / ISM long-range meshing work

[The Doctor]

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On 02/07/2013 03:23 PM, Paul Gardner-Stephen wrote:

> 2. A Twitter-like mesh-based micro-blogging service (possibly with
> a gateway to Twitter itself)

Project Byzantium is considering a CouchApp called Toast for this
purpose.  It's built on top of CouchDB, so we think it should be
possible to distribute across arbitrary numbers of CouchDB nodes with
a little hackery under the hood:

- - Avahi/mDNS to collect IP addresses of other nodes (or,
alternatively, scrape the node's routing table for
/^192\.168\.[0-9]*\.[1-9][0-9]?/
- - A shell script that runs every minute or two that pings the
CouchApp's replication URI with those IP addresses.

> 3. Distribution of either introduced or locally produced
> news/content

It seems as if there are several ways of accomplishing this, from
replicatable databases like CouchDB to custom apps that use DHTs to
store-and-forward accomplished with UDP and IP multicasting (which is
what Litter does).

> Essentially it is best to think of it as a courier service between 
> nodes, like an inter-campus mail service, rather than a bulk
> real-time

We're treating each node like a dialup BBS in that respect.  Store
local material, maintain a list of neighboring nodes, synchronize with
neighboring nodes periodically to maintain a
close-enough-for-government-work state when compared to those
neighboring nodes.

- -- 
The Doctor [412/724/301/703] [ZS|Media]
Developer, Project Byzantium: http://project-byzantium.org/

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