warning :using HTTPBodyStream on a SPDY request is subject to a potentially fatal CFNetwork
when upload file
iOS 9+ not call canonicalRequestForRequest even canInitWithRequest function return yes
but
iOS 7+ call canonicalRequestForRequest when canInitWithRequest function return yes,
warning :using HTTPBodyStream on a SPDY request is subject to a potentially fatal CFNetwork
when upload file
iOS 9+ not call canonicalRequestForRequest even canInitWithRequest function return yes but iOS 7+ call canonicalRequestForRequest when canInitWithRequest function return yes,