Class: Resolv::DNS::Requester::TCP

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

Overview

:nodoc:

Defined Under Namespace

Classes: Sender

Instance Method Summary collapse

Constructor Details

#initialize(host, port = Port) ⇒ TCP

Returns a new instance of TCP.



929
930
931
932
933
934
935
936
 
# File 'lib/resolv.rb', line 929

def initialize(host, port=Port)
  super()
  @host = host
  @port = port
  sock = TCPSocket.new(@host, @port)
  @socks = [sock]
  @senders = {}
end

Instance Method Details

#close ⇒ Object 



965
966
967
968
969
970
 
# File 'lib/resolv.rb', line 965

def close
  super
  @senders.each_key {|from,id|
    DNS.free_request_id(@host, @port, id)
  }
end

#recv_reply(readable_socks) ⇒ Object

Raises:

  • (EOFError) 


938
939
940
941
942
943
944
945
 
# File 'lib/resolv.rb', line 938

def recv_reply(readable_socks)
  len_data = readable_socks[0].read(2)
  raise EOFError if len_data.nil? || len_data.bytesize != 2
  len = len_data.unpack('n')[0]
  reply = @socks[0].read(len)
  raise EOFError if reply.nil? || reply.bytesize != len
  return reply, nil
end

#sender(msg, data, host = @host, port = @port) ⇒ Object 



947
948
949
950
951
952
953
954
955
 
# File 'lib/resolv.rb', line 947

def sender(msg, data, host=@host, port=@port)
  unless host == @host && port == @port
    raise RequestError.new("host/port don't match: #{host}:#{port}")
  end
  id = DNS.allocate_request_id(@host, @port)
  request = msg.encode
  request[0,2] = [request.length, id].pack('nn')
  return @senders[[nil,id]] = Sender.new(request, data, @socks[0])
end