Re: proxy_fcgi - force flush to client (Apache Users)

Hi Hajo,

2018-01-31 1:27 GMT-08:00 Hajo Locke <Hajo.Locke@xxxxxx>:

Hello List,

currently i compare features and behaviour of proxy_fcgi to classical methods like mod_fastcgi/mod_php.

mod_php/fastcgi have options to send every output from backend immediately to client. So it is possible to see progressing output in browser and not complete websiteoutput at once.

Here is an example script:
https://pastebin.com/4drpgBMq

if you ran this with php-cli or adjusted mod_php/mod_fastcgi you see progress in browser and numbers 0 1 2 appear one after another.
If you run this with proxy_fcgi you will see no progress, but complete output at once.

mod_proxy knows about worker parameter flushpackets, but the docs say this is in effect only for AJP. I can confirm that this and related options have no effect.
There are some workarounds posted in the web, but only one worked for me. If i add following line to the script, i also see a progress with proxy_fcgi in browser:

header('Content-Encoding: none');

Somebody knows a working workaround which works without scriptediting? some workarounds tell about using "SetEnv no-gzip 1". This was not working for me and iam not please to disable content-compression.
Is it planned to support >>flushpackets<< also to proxy_fcgi?

May be this is not important for typical website but some service/monitoring scripts.

The functionality is committed to trunk but never backported to 2.4.x because I was not sure about its importance, it looks like some users might benefit from it :)

The trunk patch is http://svn.apache.org/r1802040, it should apply to 2.4.x if you want to test it and give me some feedback.

Thanks!