Don't modify chain links passed to us, it's unsafe.
Don't modify chain links passed to us, it's unsafe.

Allocate new chain links instead.  And finally save current range into module
context.

catap/ngx_http_bytes_filter_module,catap/ngx_http_bytes_filter_module,XamanSoft/ngx_http_bytes_filter_module,XamanSoft/ngx_http_bytes_filter_module