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# frozen_string_literal: true require 'socket' require 'resolv' class << IPSocket # :stopdoc: alias original_resolv_getaddress getaddress # :startdoc: def getaddress(host) begin return Resolv.getaddress(host).to_s rescue Resolv::ResolvError raise SocketError, "Hostname not known: #{host}" end end end class TCPSocket < IPSocket # :stopdoc: alias original_resolv_initialize initialize # :startdoc: def initialize(host, serv, rest) rest[0] = IPSocket.getaddress(rest[0]) if rest[0] original_resolv_initialize(IPSocket.getaddress(host), serv, rest) end end class UDPSocket < IPSocket # :stopdoc: alias original_resolv_bind bind # :startdoc: def bind(host, port) host = IPSocket.getaddress(host) if host != "" original_resolv_bind(host, port) end # :stopdoc: alias original_resolv_connect connect # :startdoc: def connect(host, port) original_resolv_connect(IPSocket.getaddress(host), port) end # :stopdoc: alias original_resolv_send send # :startdoc: def send(mesg, flags, rest) if rest.length == 2 host, port = rest begin addrs = Resolv.getaddresses(host) rescue Resolv::ResolvError raise SocketError, "Hostname not known: #{host}" end addrs[0...-1].each {\|addr\| begin return original_resolv_send(mesg, flags, addr, port) rescue SystemCallError end } original_resolv_send(mesg, flags, addrs[-1], port) else original_resolv_send(mesg, flags, rest) end end end class SOCKSSocket < TCPSocket # :stopdoc: alias original_resolv_initialize initialize # :startdoc: def initialize(host, serv) original_resolv_initialize(IPSocket.getaddress(host), port) end end if defined? SOCKSSocket