CRC64Combine combines CRC64.

Encryption.

Return md5 according to body.

Return content-type according to object name.

GetOssLimiter create OssLimiter uploadSpeed KB/s.

NewCRC creates a new hash.Hash64 computing the CRC64 checksum using the polynomial represented by the Table.

Remove prefix from key of meta.

TeeReader returns a Reader that writes to w what it reads from r.

Add prefix to key of meta.

LimitSpeedReader for limit bandwidth upload.

OssLimiter wrapper rate.Limiter.

ServiceError is for recording error which is caused when sending request.

Sorter defines the key-value structure for storing the sorted data in signHeader.