id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1596	$body_bytes_sent larger than acutual body size when chunked enabled	wangke1020@…		"Recently we found that $body_bytes_sent in Nginx log  is larger than  acutual body size in some case. After checking these request and comparing between size of downloaded file and size of upstream server response, it seems $body_bytes_sent is not correct when gzip or chunked enabled. For example,  actual dowloaded file size is 71904 while $body_bytes_sent is 72051 and $bytes_sent is 72883.

Is it a bug? Does Nginx counts some extra bytes like CRLF when response in chunks? "	defect	closed	minor		other	1.10.x	duplicate	body_bytes_sent		Linux 3.19.0-25-generic #26~14.04.1-Ubuntu SMP  x86_64  GNU/Linux	"nginx version: nginx/1.10.2
built by gcc 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
built with OpenSSL 1.0.2j  26 Sep 2016
TLS SNI support enabled"