Class: DNS::Header::Status

Inherits:
Object
  • Object
show all
Defined in:
lib/faildns/header/status.rb

Overview

– RCODE Response code - this 4 bit field is set as part of

responses.  The values have the following
interpretation:

0               No error condition

1               Format error - The name server was
                unable to interpret the query.

2               Server failure - The name server was
                unable to process this query due to a
                problem with the name server.

3               Name Error - Meaningful only for
                responses from an authoritative name
                server, this code signifies that the
                domain name referenced in the query does
                not exist.

4               Not Implemented - The name server does
                not support the requested kind of query.

5               Refused - The name server refuses to
                perform the specified operation for
                policy reasons.  For example, a name
                server may not wish to provide the
                information to the particular requester,
                or a name server may not wish to perform
                a particular operation (e.g., zone
                transfer) for particular data.

6-15            Reserved for future use.

++

Constant Summary collapse

Values = 
{
  0  => :NOERROR,
  1  => :FORMERR,
  2  => :SERVFAIL,
  3  => :NXDOMAIN,
  4  => :NOTIMP,
  5  => :REFUSED,
  6  => :YXDOMAIN,
  7  => :YXRRSET,
  8  => :NXRRSET,
  9  => :NOTAUTH,
  10 => :NOTZONE,
  11 => :RESERVED11,
  12 => :RESERVED12,
  13 => :RESERVED13,
  14 => :RESERVED14,
  15 => :RESERVED15,
  16 => :BADSIG,
  17 => :BADKEY,
  18 => :BADTIME,
  19 => :BADMODE,
  20 => :BADNAME,
  21 => :BADALG,
  22 => :BADTRUNC
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Status

Returns a new instance of Status.



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# File 'lib/faildns/header/status.rb', line 88

def initialize (value)
  if value.is_a? Symbol
    @value = Values.find {|key, val| val == value}.first rescue nil
  elsif value.is_a? Integer
    @value = value
  else
    @value = value.value rescue nil
  end

  if !self.to_sym
    raise ArgumentError.new('The passed value is not a suitable type.')
  end
end

Instance Attribute Details

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/faildns/header/status.rb', line 86

def value
  @value
end

Instance Method Details

#==(what) ⇒ Object 



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# File 'lib/faildns/header/status.rb', line 102

def == (what)
  if what.is_a? Symbol
    self.to_sym == what
  elsif value.is_a? Integer
    @value == what
  else
    @value == what.value rescue false
  end
end

#to_s ⇒ Object 



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# File 'lib/faildns/header/status.rb', line 116

def to_s
  Values[@value].to_s
end

#to_sym ⇒ Object 



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# File 'lib/faildns/header/status.rb', line 112

def to_sym
  Values[@value]
end