# 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
|