Hi, the following script shows that UDPSocket#bind fails if the given
IP is IPv6 (however TCPServer does not fail). It occurs with Ruby 1.8
and 1.9.X.
My computer has IPv4 and IPv6 (using Miredo/Teredo).
The script:
#!/usr/bin/ruby
require “socket”
IPv4 = “192.168.1.12”
IPv6 = “2001:0:53aa:64c:187c:3ecb:3419:d1a6”
PORT = 9999
begin
puts “1) binding in IPv4 TCP…”
s4 = TCPServer.open IPv4, PORT
puts “=> OK”
rescue => e
$stderr.puts “#{e.class}: #{e}”
end
begin
puts “2) binding in IPv6 TCP…”
s4 = TCPServer.open IPv6, PORT
puts “=> OK”
rescue => e
$stderr.puts “#{e.class}: #{e}”
end
begin
puts “3) binding in IPv4 UDP…”
s4 = UDPSocket.new
s4.bind IPv4, PORT
puts “=> OK”
rescue => e
$stderr.puts “#{e.class}: #{e}”
end
begin
puts “4) binding in IPv6 UDP…”
s4 = UDPSocket.new
s4.bind IPv6, PORT
puts “=> OK”
rescue => e
$stderr.puts “#{e.class}: #{e}”
end
Result of the script:
-
binding in IPv4 TCP…
=> OK -
binding in IPv6 TCP…
=> OK -
binding in IPv4 UDP…
=> OK -
binding in IPv6 UDP…
Errno::EAFNOSUPPORT: Address family not supported by protocol - bind(2)