Class: Capturing::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/capture.rb

Direct Known Subclasses

ForwardRunner, PrintRunner

Instance Method Summary collapse

Constructor Details

#initialize(exec) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/capture.rb', line 8

def initialize(exec)
  @exec = exec
  @pcaplet = Pcap::Capture.open_live(exec.device, exec.max_bytes, true, exec.timeout)
  @pcaplet.setfilter(Pcap::Filter.new("port #{exec.port} and tcp", @pcaplet))
end

Instance Method Details

#destroy! ⇒ Object 



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# File 'lib/capture.rb', line 31

def destroy!
  @pcaplet.close
end

#on_packet(data) ⇒ Object 



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# File 'lib/capture.rb', line 27

def on_packet(data)
  raise NotImplementedError.new "on_packet(packet)"
end

#run! ⇒ Object 



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# File 'lib/capture.rb', line 14

def run!
  @pcaplet.each_packet do |packet|
    if packet.tcp? && packet.tcp_data_len > 0
      @exec.logger.debug "Handle message packets: #{packet}"
      begin
        on_packet packet.tcp_data
      rescue => e
        @exec.logger.error e
      end
    end
  end
end