gistfile1.txt

  def getjson
    thejson = ''
    uri = URI.parse("http://#{@dump1090host}:#{@dump1090port}/data.json")
    begin
      Timeout::timeout(1) {
        thejson = Net::HTTP.get(uri) rescue {}
      }
    rescue Timeout::Error => e
      log 'Getting the JSON timed out'
      log e.message
    rescue => e
      log 'Some other JSON problem'
      log e.message
    end

    begin
      return JSON.parse(thejson)
    rescue => e
      log e.message
      {}
    end
  end

  def findclosestplane
    begin
      planedata = getjson rescue {}
    rescue => e
      log e.message
      log e.backtrace
      log 'Failed to get JSON plane data'
    end
    return @closestplane unless planedata.size > 0
    closestplane = 100000000

    planedata.each do |plane|
      next if plane['altitude'] > 10000
      begin
        distance = @ourcoords.distance_to(Geokit::LatLng.new(plane['lat'], plane['lon']))
      rescue => e
        log "Failed to get distance because #{e.message}"
      end

      if distance > 0 and distance < closestplane
        closestplane = distance
        @closestplane = plane
        @closestplane[:distance] = distance
      end

    end
    @closestplane
  end