OGN (glidernet.org) broadcasts aircraft positions as APRS/APRS-IS messages. This gem hooks into this stream of data and provides the necessary classes to parse the raw message strings into meaningful objects.

Somewhat more radical filters designed to decimate malicious requests during a denial-of-service (DoS) attack by chopping their connection well before your Rack app wastes any significant resources on them – ouch! The filters have been proven to work against certain DoS attacks, however, they mi...