[Commotion-discuss] [OTI-Tech] Fwd: Re: Has anyone implemented serverless messaging over a mesh?

Wed Oct 30 15:56:11 UTC 2013

Not sure how we ended up not on commotion-discuss, but re-sending...

I imagine you could also just host all of the GIS and CRM files in couchDB
as well, potentially in the form of a couchapp (
http://couchapp.org/page/index) and work with Leaflet as the front end for
the map.

We were thinking about this idea for Tidepools (tidepools.co), which is
currently uses MongoDB, but could be restructured to work on top of couchDB.

Also re:GIS... Vector maps are much smaller and easier to store, so you
might opt for Vector over raster map data if you are working on the RPi.

-Georgia

On Wed, Oct 30, 2013 at 10:19 AM, Will Hawkins <
hawkinsw at opentechinstitute.org> wrote:

>
>
> On 10/30/2013 09:52 AM, Ryan Gerety wrote:
> > This was also something Will, Andy and I puzzled over recently--we didnt
> > have an easy way to communicate over the mesh without running something
> > on a laptop.
> >
> > We tried LinPhone, which could probably work with the proper
> > configuration, but we couldnt get it configured properly in a short
> > amount of time.
>
> We were able to make a call. I mean that: call. Not calls. As Ryan said,
> our success was probably limited by the amount of time we had to spend
> on this.
>
> For posterity, if anyone uses LinPhone, make sure to turn of random port
> assignments through the configuration UI. Without this turned off, the
> SIP stack on the device chooses a random port each time it starts and
> means that calling another user is unecessarily complex.
>
> Will
>
> >
> > We know that Serval hasnt really worked for quick chatting in the
> > past--as there is too much delay.
> >
> > When Will, Andy and I were together we did look at Kouchat but didnt try
> > it out (or maybe we did, I dont recall for sure).  Anyone had experience
> > with that?
> >
> > Running MediaGrid was fantastic, but it would be great to think about a
> > phone only solution...
> >
> > ...
> >
> > -------- Original Message --------
> > Subject: Re: [Commotion-discuss] Has anyone implemented serverless
> > messaging over a mesh?
> > Date: Tue, 29 Oct 2013 22:57:37 -0400
> > From: Evan Hutchison <evan_hutchison at post.harvard.edu>
> > To: Dan Staples <danstaples at opentechinstitute.org>
> > CC: commotion-discuss <commotion-discuss at lists.chambana.net>
> >
> > Thanks Dan!
> >
> > That is exactly what I am looking for.  The replicated database is
> > crucial.  I'll get it up on our sandbox server asap.  I figured you all
> > would be working on something like that to complement Commotion.
> >
> > Another question-  I want to implement GIS servers and an emergency CRM
> on
> > the Pis but still retain survivability if one or more of the devices gets
> > knocked out.  Any thoughts on using an Anycast routing scheme and
> multiple
> > instances of the CRM and map server to achieve this?  I'm I barking up
> the
> > wrong tree?
> >
> > Best-
> > E
> >
> >
> > On Tue, Oct 29, 2013 at 10:22 PM, Dan Staples <
> > danstaples at opentechinstitute.org> wrote:
> >
> >> Evan,
> >>
> >> You might want to check out my project MediaGrid:
> >> http://mediagrid.disman.tl/
> >>
> >> It implements a decentralized, encrypted webchat service (as well as
> >> file sharing), and was designed to run on Raspberry Pis in a mesh
> network.
> >>
> >> It's decentralized in that each Pi (or whatever device running it) has a
> >> database of messages that it continuously synchronizes with the other
> >> devices on the mesh, constantly updating with new messages. You can also
> >> do private messages to other users in the webchat, similar to IRC.
> >>
> >> Dan
> >>
> >> On 10/29/2013 09:34 PM, Evan Hutchison wrote:
> >>> Yes Ben, they do- but it is embedded with the Serval Mesh package
> which,
> >>> as you point out, runs on Android handsets.  We are using BATMAN with
> >>> Pis as WAPs and routers, as well as with an existing mesh running over
> >>> TP-Link routers- so I want something that can run across different
> >>> platforms (Linux, Mac OS, Windows, Android) and is independent of their
> >>> system.
> >>>
> >>> Right after I posted, of course I found kouchat
> >>> <https://code.google.com/p/kouchat/> which runs on everything but
> >>> IPhones.  It does the trick, but I would like to find something that
> >>> allows for MUCs.
> >>>
> >>> Thanks Dean, will check it out.
> >>>
> >>>
> >>> On Tue, Oct 29, 2013 at 9:15 PM, Ben West <ben at gowasabi.net
> >>> <mailto:ben at gowasabi.net>> wrote:
> >>>
> >>>     Doesn't Serval have a messaging implementation that they've used on
> >>>     Android handsets?
> >>>
> >>>
> >>>     On Tue, Oct 29, 2013 at 6:48 PM, Evan Hutchison
> >>>     <evan_hutchison at post.harvard.edu
> >>>     <mailto:evan_hutchison at post.harvard.edu>> wrote:
> >>>
> >>>         Hi all-
> >>>
> >>>         I'm working with my media lab class on an off-the-grid
> emergency
> >>>         response mesh network.  We want to integrate messaging.  I was
> >>>         initially experimenting with a Jabber server but decided
> >>>         serverless messaging would better solve the problem- we want to
> >>>         avoid centralization as much as possible so that if one node
> >>>         goes down, folks can still communicate across the LAN or WAN
> >>>
> >>>         I ran across a description of an XMPP-like serverless messaging
> >>>         system:  http://xmpp.org/extensions/xep-0174.html
> >>>
> >>>         Anyone have any experience or insights?
> >>>
> >>>         Thanks-
> >>>         Evan
> >>>
> >>>         _______________________________________________
> >>>         Commotion-discuss mailing list
> >>>         Commotion-discuss at lists.chambana.net
> >>>         <mailto:Commotion-discuss at lists.chambana.net>
> >>>         https://lists.chambana.net/mailman/listinfo/commotion-discuss
> >>>
> >>>
> >>>
> >>>
> >>>     --
> >>>     Ben West
> >>>     http://gowasabi.net
> >>>     ben at gowasabi.net <mailto:ben at gowasabi.net>
> >>>     314-246-9434 <tel:314-246-9434>
> >>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Commotion-discuss mailing list
> >>> Commotion-discuss at lists.chambana.net
> >>> https://lists.chambana.net/mailman/listinfo/commotion-discuss
> >>>
> >>
> >> --
> >> Dan Staples
> >>
> >> Open Technology Institute
> >> https://commotionwireless.net
> >> OpenPGP key: http://disman.tl/pgp.asc
> >> Fingerprint: 2480 095D 4B16 436F 35AB 7305 F670 74ED BD86 43A9
> >> _______________________________________________
> >> Commotion-discuss mailing list
> >> Commotion-discuss at lists.chambana.net
> >> https://lists.chambana.net/mailman/listinfo/commotion-discuss
> >>
> >>
> >
> >
> >
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> >
> >
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>

-- 
Georgia Bullen
Field Operations Technologist, Open Technology
Institute<http://oti.newamerica.net/>
New America Foundation
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