RunF provides a convenient way to run a function f repeatedly until the context expires or f returns a non-nil error that is not ErrResetBackoff.

DefaultExponential is an exponential backoff implementation using the default values for all the configurable knobs defined in https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.

ErrResetBackoff is the error to be returned by the function executed by RunF, to instruct the latter to reset its backoff state.

Exponential implements exponential backoff algorithm as defined in https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.

Strategy defines the methodology for backing off after a grpc connection failure.