[zeromq-dev] zyre

[Joe McIlvain]

Utsav,

Try running the builds/qt-android/build.sh script in the repository.

On Wed, Mar 25, 2015 at 2:00 PM, Utsav Drolia <utsavdrolia at gmail.com> wrote:

> Is compiling zyre for Android documented anywhere?
> Also are the python bindings for zyre stable now? I was thinking of using
> python on Android (e.g. SL4A) and accessing zyre through it.
>
> Utsav
>
> > On Mar 24, 2015, at 6:35 AM, Pieter Hintjens <ph at imatix.com> wrote:
> >
> > I think the multicast filtering on access points counts as a bug in
> > the Android WiFi stack, simply. There's no inherent reason for it.
> > It's also difficult to work around except by using broadcast, which we
> > did.
> >
> > It is possible to imagine Zyre working without bi-directional
> > discovery, so if A sees B, and connects to B, then B can connect back
> > to A even if it cannot see A's beacons. However we also use beacons
> > for heartbeating, as TCP is too inefficient. So we need this to work
> > both ways...
> >
> > Since we introduced gossip discovery, however, it makes sense to
> > support multiple different discovery mechanisms. The calling app can
> > choose UDP broadcast if it wants that.
> >
> > We could even tune this silently, e.g. use broadcast on WiFi, and
> > multicast on ethernet.
> >
> > -Pieter
> >
> > On Tue, Mar 24, 2015 at 11:17 AM, Arnaud Loonstra <arnaud at sphaero.org>
> wrote:
> >> I'm no Android guru but it might be logical. When the device becomes a
> >> hotspot it essentially becomes a router. It should then support the
> >> IGMP
> >> protocol. A broadcast it could simply forward anywhere. There's a
> >> question
> >> on SO:
> >>
> http://stackoverflow.com/questions/6550618/multicast-support-on-android-in-hotspot-tethering-mode
> >>
> >> No definite answer though.
> >>
> >> Even on a linux machine you have to do some configuration before it
> >> does
> >> multicast routing, i think.
> >>
> >> $ cat /proc/sys/net/ipv4/conf/all/mc_forwarding
> >> 0
> >>
> >> Arnaud
> >>
> >> On 2015-03-23 18:13, Pieter Hintjens wrote:
> >>> We used multicast first, and then switched to broadcast UDP because
> >>> the Android stack filters (or used to) incoming multicast when it is
> >>> running as an access point.
> >>>
> >>> On Mon, Mar 23, 2015 at 5:58 PM, Arnaud Loonstra <arnaud at sphaero.org>
> >>> wrote:
> >>>> "but I'm working on it in C nor Android"
> >>>>
> >>>> Add 'not' to that... I'm working on it in Python
> >>>>
> >>>> On 03/23/2015 04:05 PM, Arnaud Loonstra wrote:
> >>>>> Yes, but I'm working on it in C nor Android(currently):
> >>>>>
> >>>>> https://github.com/zeromq/pyre/blob/master/pyre/zbeacon.py#L208
> >>>>>
> >>
> >>
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