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Contents
#--
# Ruby Whois
#
# An intelligent pure Ruby WHOIS client and parser.
#
# Copyright (c) 2009-2014 Simone Carletti <weppos@weppos.net>
#++
require 'socket'
require 'whois/errors'
module Whois
class Server
# The SocketHandler is the default query handler provided with the
# Whois library. It performs the WHOIS query using a synchronous
# socket connection.
class SocketHandler
# Array of connection errors to rescue
# and wrap into a {Whois::ConnectionError}
RESCUABLE_CONNECTION_ERRORS = [
SystemCallError,
SocketError,
]
# Performs the Socket request.
#
# @todo *args might probably be a Hash.
#
# @param [String] query
# @param [Array] args
# @return [String]
#
def call(query, *args)
execute(query, *args)
rescue *RESCUABLE_CONNECTION_ERRORS => error
raise ConnectionError, "#{error.class}: #{error.message}"
end
# Executes the low-level Socket connection.
#
# It opens the socket passing given +args+,
# sends the +query+ and reads the response.
#
# @param [String] query
# @param [Array] args
# @return [String]
#
# @api private
#
def execute(query, *args)
client = TCPSocket.new(*args)
client.write("#{query}\r\n") # I could use put(foo) and forget the \n
client.read # but write/read is more symmetric than puts/read
ensure # and I really want to use read instead of gets.
client.close if client # If != client something went wrong.
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems