CalculateInterval calculate retry interval.

CalculateRandTime returns a non-negative pseudo-random time in the half-open interval [0,sed).

ConvertIpToUint32 converts ip to little-endian uint32 format.

ConvertPortToBigEndian convert uint32 to network order.

GrpcConnect creates a client connection to the given addr.

MaxRetryCount retry max count when reconnect.

MaxRetryInterval retry interval time when reconnect.