It avoids the late expiration due to the server time mismatch. Change-Id: I126a76cff112fbeb92b71dd036195555b20e637b Reviewed-on: https://go-review.googlesource.com/3307 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Change-Id: Ic8496d10de47181f6b9c16360b5101c6314d71ee Reviewed-on: https://go-review.googlesource.com/1653 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>