id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
13320	WordPress & nginx compatibility: core/upgrade plugins progress bar needed	FractalizeR	dd32	"Hello

Many hosting providers use nginx together with Apache to speed up their shared hosting servers. And nginx is usually set up as 

{{{
location / {
    proxy_read_timeout = 60
}
}}}

So, when user called /wp-admin/upgrade.php to upgrade core or plugins, wordpress actually stops sending any information to Apache (PHP buffers even those several messages which are sent out) until core or plugin is fully updated.

This operation on big plugins and especially WP core takes much more time, than 60 seconds. So, this makes hoster server effectively incompatible with WordPress. And unless hosting company is willing to help it's customer to change nginx settings (which is not always a desired move because of stability issues), customer is left out with a need to upgrade both WordPress and it's plugins manually.

My suggestion is to periodically send some information to apache at least each 10-30 seconds when upgrade is in process. It may be a javascript progress bar function calls, or just an empty tag like <div style=""display: none;""></div> immediately followed by PHP call flush() (and may be, ob_flush of needed).

Also it may be required to send enough data this way (inserting, may be some string like ""GGGGGGGGGGGGGGGGGGGGGGGGGGG"" inside invisible <div> to make Apache modules like mod_gzip to flush their buffers to nginx also if they are enabled."	enhancement	closed	normal		Upgrade/Install	2.9.2	normal	invalid	reporter-feedback close	WordPress@…