# File tokyotyrant.rb, line 298
    def out(key)
      key = _argstr(key)
      if !@sock
        @ecode = EINVALID
        return false
      end
      sbuf = [0xC8, 0x20, key.length].pack("CCN")
      sbuf += key
      if !_send(sbuf)
        @ecode = ESEND
        return false
      end
      code = _recvcode
      if code == -1
        @ecode = ERECV
        return false
      end
      if code != 0
        @ecode = ENOREC
        return false
      end
      return true
    end