Class: Packetnom::Packet::Tcp

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(bytes) ⇒ Tcp

Initialize the packet



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# File 'lib/packet/tcp.rb', line 21

def initialize( bytes )
    @packet = bytes
    
    @src_port = bytes[34..35].join().to_i(16).to_s(10).to_i
    @dst_port = bytes[36..37].join().to_i(16).to_s(10).to_i
    
    @seq = bytes[38..41].join().to_i(16).to_s(10).to_i

    @ack = bytes[42..45].join().to_i(16).to_s(10).to_i

    @offset = bytes[46].split(//)[0].to_i(16).to_s(10)

    @reserved = bytes[46].split(//)[1].to_i(16).to_s(10)
    @ecn = bytes[47].split(//)[0].to_i(16).to_s(10)
    @cbits = bytes[47].split(//)[1].to_i(16).to_s(10)

    @win = bytes[48..49].join().to_i(16)
    @sum = bytes[50..51].join().to_i(16)
    @uptr = bytes[52..53].join().to_i(16)
end

Instance Attribute Details

#ack ⇒ Object

Returns the value of attribute ack.



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# File 'lib/packet/tcp.rb', line 11

def ack
  @ack
end

#cbits ⇒ Object Also known as: controlbits, control

Returns the value of attribute cbits.



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# File 'lib/packet/tcp.rb', line 15

def cbits
  @cbits
end

#dst_port ⇒ Object Also known as: dest_port, dport

Returns the value of attribute dst_port.



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# File 'lib/packet/tcp.rb', line 9

def dst_port
  @dst_port
end

#ecn ⇒ Object

Returns the value of attribute ecn.



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# File 'lib/packet/tcp.rb', line 14

def ecn
  @ecn
end

#offset ⇒ Object

Returns the value of attribute offset.



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# File 'lib/packet/tcp.rb', line 12

def offset
  @offset
end

#reserved ⇒ Object

Returns the value of attribute reserved.



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# File 'lib/packet/tcp.rb', line 13

def reserved
  @reserved
end

#seq ⇒ Object

Returns the value of attribute seq.



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# File 'lib/packet/tcp.rb', line 10

def seq
  @seq
end

#src_port ⇒ Object Also known as: source_port, sport

Attributes



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# File 'lib/packet/tcp.rb', line 8

def src_port
  @src_port
end

#sum ⇒ Object Also known as: checksum

Returns the value of attribute sum.



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# File 'lib/packet/tcp.rb', line 17

def sum
  @sum
end

#uptr ⇒ Object Also known as: urgent

Returns the value of attribute uptr.



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# File 'lib/packet/tcp.rb', line 18

def uptr
  @uptr
end

#win ⇒ Object Also known as: window, windowsize, size

Returns the value of attribute win.



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# File 'lib/packet/tcp.rb', line 16

def win
  @win
end