I am getting this error from Nginx, but can\'t seem to figure it out! I am using codeigniter and am using the database for sessions. So I\'m wondering how the header can eve
I encountered this problem in the past (not using codeigniter but it happens whenever the responses contain a lot of header data) and got used to tweaking the buffers as suggested here, but recently I got bitten by this issue again and the buffers were apparently okay.
Turned out it was spdy's fault which I was using on this particular project and solved by enabling spdy headers compression like this:
spdy_headers_comp 6;