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