disable request body buffering for file upload

[garyc]

Thank you, it sounds like this approach may yet work.

> It is up to your FastCGI application to handle this though, 
> and PHP as well as PHP-FPM may impose additional limitations 
> and/or require additional configuration for this to work.

I will dig into the php configuration details and see if i can progress
this, it is reassuring to hear that the fastcgi_request_buffering directive
is intended to facilitate this.

Thanks for the quick response.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,275567,275570#msg-275570