Class: Resolv::DNS::Requester

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

Overview

:nodoc:

Direct Known Subclasses

ConnectedUDP, TCP, UnconnectedUDP

Defined Under Namespace

Classes: ConnectedUDP, RequestError, Sender, TCP, UnconnectedUDP

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Requester

Returns a new instance of Requester.



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# File 'lib/rubysl/resolv/resolv.rb', line 605

def initialize
  @senders = {}
  @sock = nil
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/rubysl/resolv/resolv.rb', line 633

def close
  sock = @sock
  @sock = nil
  sock.close if sock
end

#request(sender, tout) ⇒ Object 



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# File 'lib/rubysl/resolv/resolv.rb', line 610

def request(sender, tout)
  timelimit = Time.now + tout
  sender.send
  while (now = Time.now) < timelimit
    timeout = timelimit - now
    if !IO.select([@sock], nil, nil, timeout)
      raise ResolvTimeout
    end
    reply, from = recv_reply
    begin
      msg = Message.decode(reply)
    rescue DecodeError
      next # broken DNS message ignored
    end
    if s = @senders[[from,msg.id]]
      break
    else
      # unexpected DNS message ignored
    end
  end
  return msg, s.data
end