Disable proxy buffering for websockets
mdounin at mdounin.ru
Mon Dec 17 02:26:40 UTC 2018
On Sun, Dec 16, 2018 at 02:45:56PM -0800, Chad Phillips wrote:
> I use software that runs a speed test via websockets. When proxying this
> websocket connection through Nginx, the 'download' portion of the test is
> My theory is that this is due to Nginx buffering the response from the
> backend server, thus the timer on the backend server reports an inaccurate
> value compared to when it's not proxied.
> I've tried the following settings at both the location and server levels of
> my configuration:
> proxy_buffering off;
> proxy_ignore_headers X-Accel-Buffering;
> However, this doesn't fix the problem. I've confirmed the functionality
> works correctly when it's not being proxied via Nginx, so wondering if A)
> there is some other cause of the issue besides the proxy buffer, or B) I'm
> not using the proxy buffer settings correctly?
As long as a connection is upgraded to the websockets protocol,
buffering doesn't matter: regardless of the settings nginx will
proxy anything without buffering.
Note though that websockets proxying requires special
configuration, see here:
Note well that proxying though nginx implies several additional
buffers being used anyway (two socket buffers and a proxy buffer
within nginx), and this may reduce accuracy.
More information about the nginx