vsiz (TokyoTyrant::RDB)

    # File tokyotyrant.rb, line 409
        def vsiz(key)
          key = _argstr(key)
          if !@sock
            @ecode = EINVALID
            return -1
          end
          sbuf = [0xC8, 0x38, key.length].pack("CCN")
          sbuf += key
          if !_send(sbuf)
            @ecode = ESEND
            return -1
          end
          code = _recvcode
          if code == -1
            @ecode = ERECV
            return -1
          end
          if code != 0
            @ecode = ENOREC
            return -1
          end
          return _recvint32
        end