headers

const (
	Accept        = "Accept"
	ContentType   = "Content-Type"
	Vary          = "Vary"
	Origin        = "Origin"
	ContentLength = "Content-Length"

	AccessControlAllowOrigin      = "Access-Control-Allow-Origin"
	AccessControlAllowMethods     = "Access-Control-Allow-Methods"
	AccessControlAllowHeaders     = "Access-Control-Allow-Header"
	AccessControlExposeHeaders    = "Access-Control-Expose-Header"
	AccessControlMaxAge           = "Access-Control-Max-Age"
	AccessControlAllowCredentials = "Access-Control-Allow-Credentials"
	AccessControlRequestHeaders   = "Access-Control-Request-Header"
)