Fail-fast in unpack will be better?

[iSenninha]

BaiduRpcProtocol now is below

            int bodySize = fixHeaderBuf.readInt();
            if (in.readableBytes() < FIXED_LEN + bodySize) {
                throw notEnoughDataException;
            }
            // 512M
            if (bodySize > 512 * 1024 * 1024) {
                throw new TooBigDataException("to big body size:" + bodySize);
            }

change sequence like this will be better?

            int bodySize = fixHeaderBuf.readInt();
            // 512M
            if (bodySize > 512 * 1024 * 1024) {
                throw new TooBigDataException("to big body size:" + bodySize);
            }
            if (in.readableBytes() < FIXED_LEN + bodySize) {
                throw notEnoughDataException;
            }

[wenweihu86]

why? Since notEnoughDataException is more likely to happen than TooBigDataException.