* lib/resolv.rb (Resolv::DNS.bind_random_port): bind to "::" for IPv6.

  (Resolv::DNS::ConnectedUDP#initialize): specify is_ipv6 argument of
  bind_random_port.
  [ruby-core:25970]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25246 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 4 deletions

diff --git a/lib/resolv.rb b/lib/resolv.rb
index ed8859d3c4..265a4b7f0c 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -599,10 +599,10 @@ class Resolv
       }
     end
 
-    def self.bind_random_port(udpsock) # :nodoc:
+    def self.bind_random_port(udpsock, is_ipv6=false) # :nodoc:
       begin
         port = rangerand(1024..65535)
-        udpsock.bind("", port)
+        udpsock.bind(is_ipv6 ? "::" : "", port)
       rescue Errno::EADDRINUSE
         retry
       end
@@ -699,8 +699,9 @@ class Resolv
           super()
           @host = host
           @port = port
-          @sock = UDPSocket.new(host.index(':') ? Socket::AF_INET6 : Socket::AF_INET)
-          DNS.bind_random_port(@sock)
+          is_ipv6 = host.index(':')
+          @sock = UDPSocket.new(is_ipv6 ? Socket::AF_INET6 : Socket::AF_INET)
+          DNS.bind_random_port(@sock, is_ipv6)
           @sock.connect(host, port)
           @sock.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC) if defined? Fcntl::F_SETFD
         end