added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 63 insertions, 0 deletions

diff --git a/trunk/lib/resolv-replace.rb b/trunk/lib/resolv-replace.rb
new file mode 100644
index 0000000000..63d58cea27
--- /dev/null
+++ b/trunk/lib/resolv-replace.rb
@@ -0,0 +1,63 @@
+require 'socket'
+require 'resolv'
+
+class << IPSocket
+  alias original_resolv_getaddress getaddress
+  def getaddress(host)
+    begin
+      return Resolv.getaddress(host).to_s
+    rescue Resolv::ResolvError
+      raise SocketError, "Hostname not known: #{host}"
+    end
+  end
+end
+
+class TCPSocket
+  alias original_resolv_initialize initialize
+  def initialize(host, serv, *rest)
+    rest[0] = IPSocket.getaddress(rest[0]) unless rest.empty?
+    original_resolv_initialize(IPSocket.getaddress(host), serv, *rest)
+  end
+end
+
+class UDPSocket
+  alias original_resolv_bind bind
+  def bind(host, port)
+    host = IPSocket.getaddress(host) if host != ""
+    original_resolv_bind(host, port)
+  end
+
+  alias original_resolv_connect connect
+  def connect(host, port)
+    original_resolv_connect(IPSocket.getaddress(host), port)
+  end
+
+  alias original_resolv_send send
+  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
+      err = nil
+      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
+  alias original_resolv_initialize initialize
+  def initialize(host, serv)
+    original_resolv_initialize(IPSocket.getaddress(host), port)
+  end
+end if defined? SOCKSSocket