On Fri, Feb 05, 2010 at 02:12:59PM +1100, Sam Wilson wrote: > > I need to track where they go, primarily; that's not really anything to do > with OSM, I realise.
For on-line vehicle tracking I wrote a little daemon to run on my OpenMoko FreeRunner phone; it gets position from gpsd and forward it to a remote database server using UDP packets over GPRS connection. It works very well, it seems also that GPRS modem does some buffering when switching from cell to cell, because I exprience very few data loss also away from cities. I send a position every 10 seconds, I lost max 3% of packets here in Italy. The UDP connection is "send and forget", no retry is made. An improvement of the software can be some sort of acknowlegment and packet retransmission. Here you can find that experiment: http://sourceforge.net/projects/gpsdproxy/ -- Niccolo Rigacci Firenze - Italy _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk