make_socket

# File lib/rinda/ring.rb, line 132
    def make_socket(address, interface_address=nil, multicast_interface=0)
      addrinfo = Addrinfo.udp(address, @port)

      socket = Socket.new(addrinfo.pfamily, addrinfo.socktype,
                          addrinfo.protocol)

      if addrinfo.ipv4_multicast? or addrinfo.ipv6_multicast? then
        if Socket.const_defined?(:SO_REUSEPORT) then
          socket.setsockopt(:SOCKET, :SO_REUSEPORT, true)
        else
          socket.setsockopt(:SOCKET, :SO_REUSEADDR, true)
        end

        if addrinfo.ipv4_multicast? then
          interface_address = '0.0.0.0' if interface_address.nil?
          socket.bind(Addrinfo.udp(interface_address, @port))

          mreq = IPAddr.new(addrinfo.ip_address).hton +
            IPAddr.new(interface_address).hton

          socket.setsockopt(:IPPROTO_IP, :IP_ADD_MEMBERSHIP, mreq)
        else
          interface_address = '::1' if interface_address.nil?
          socket.bind(Addrinfo.udp(interface_address, @port))

          mreq = IPAddr.new(addrinfo.ip_address).hton +
            [multicast_interface].pack('I')

          socket.setsockopt(:IPPROTO_IPV6, :IPV6_JOIN_GROUP, mreq)
        end
      else
        socket.bind(addrinfo)
      end

      socket
    rescue
      socket = socket.close if socket
      raise
    ensure
      @sockets << socket if socket
    end