= FAQ

Enough already! How does this work by example!? 

    #!/usr/bin/env ruby
    require "rubygems"
    require "pcaprub"

    class CaptureExample

      def initialize()
        #interface configuration
        @dev = ::Pcap.lookupdev
        #promiscous_mode = true 
        @promiscous_mode = false 
        @timeout = 0 
        
        #packet information
        @capture_packets = 100
        @snaplength = 65535
        @bpf = "ip and not dst net 110.0.0.0/8" 
      end

      def getpackets
        system("ifconfig", @dev, "up")

        capture = ::Pcap.open_live(@dev, @snaplength, @promiscous_mode, @timeout)  
        capture.setfilter(@bpf)
          
        begin
          puts "Started capture..(#{@dev} => \"#{@bpf}\")"
          capture.each do |packet|
            # Handling the number of packets to process
            @capture_packets -= 1
            if @capture_packets == 0
              break
            end
          end
          
        # ^C to stop sniffing
        rescue Interrupt
          puts "\nPacket Capture stopped by interrupt signal."
          
        rescue Exception => e
          puts "\nERROR: #{e}"
          retry
        end
        
        puts "Captured #{100 - @capture_packets} packets"
            
        return capture
        
      end

    end


    mycapture = CaptureExample.new()
    packet_capture = mycapture.getpackets
    puts "capture.stats['recv'] = #{packet_capture.stats['recv']}"
    puts "capture.stats['drop'] = #{packet_capture.stats['drop']}"