Hello,
I am receiving "upstream timed out (110: Connection timed out) while connecting to upstream, client" errors. They are comet calls and I wonder if increasing the proxy_connect_timeout will help. i have increased proxy_send_timeout and proxy_read_timeout to 6000 and have turned off proxy_buffering. The docs say that the proxy_connect_timeout cannot "usually" exceed 75s. All my searches regarding nginx and comet return config files that have proxy_connect_timeout values exceeding 75s. Is there a max value for this?