fs.go
func ServeFileUncompressed(ctx *RequestCtx, path string) {
	ctx.Request.Header.DelBytes(strAcceptEncoding)
	ServeFile(ctx, path)
}
func ServeFileUncompressed(ctx *RequestCtx, path string) {
	ctx.Request.Header.DelBytes(strAcceptEncoding)
	ServeFile(ctx, path)
}
// ServeFileUncompressed returns HTTP response containing file contents
// from the given path.
//
// Directory contents is returned if path points to directory.
//
// ServeFile may be used for saving network traffic when serving files
// with good compression ratio.
//
// See also RequestCtx.SendFile.