Access log in response begin

Our servers serving static and large size video files. We can see the
accesslog details if the response is complete.
Can i get log at the response is being sent to client? (not when request
recieved)

request
|
|
v
call reverse porxy
||
||
v-------------------- v
response response —> ok, i don’t want any action
code: 200 code: 404
|
|
v
Accesslog entry
|
|
v
response is being sent to client

ps: if i am wrong, you can fix.

Posted at Nginx Forum: