open (TokyoTyrant::RDB)

    # File tokyotyrant.rb, line 100
        def open(host, port = 0, timeout = 0)
          host = _argstr(host)
          port = _argnum(port)
          timeout = _argnum(timeout)
          if @sock
            @ecode = EINVALID
            return false
          end
          if port > 0
            begin
              info = TCPSocket::gethostbyname(host)
            rescue Exception
              @ecode = ENOHOST
              return false
            end
            begin
              sock = TCPSocket::open(info[3], port)
            rescue Exception
              @ecode = EREFUSED
              return false
            end
            begin
              sock.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, true)
            rescue Exception
            end
          else
            begin
              sock = UNIXSocket::open(host)
            rescue Exception
              @ecode = EREFUSED
              return false
            end
          end
          if sock.respond_to?(:set_encoding)
            sock.set_encoding("ASCII-8BIT")
          end
          @sock = sock
          @tout = timeout
          return true
        end