GRPCError returns grpc status error.

IsGRPCError returns determined value as boolean which a error has *status.Status.

ErrGRPCInternal server error.

ErrGRPCInvalidArgument invalid request.

ErrGRPCPermissionDenied ...

ErrGRPCUnauthenticated a user need to login.

ErrHTTP400 uses as 400 BadRequest.

ErrHTTP401 uses as 401 Unauthorized.

ErrHTTP403 uses as 403 Forbidden.

ErrHTTP405 uses as 405 MethodNotAllowed.

ErrHTTP500 uses as 500 InternalServerError which a msg was changed from 'Internal Server Error'.

ErrHTTP502 uses as 502 BadGateway.

ErrHTTP503 uses as 503 ServiceUnavailable.

ErrHTTPBadRequest invalid request parameter.

ErrHTTPForbidden denied request.

ErrHTTPUnauthorized a user need to login.