id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
802	$server_protocol is empty with the HTTP/2.0 module	jerrygrey@…		"It seems when using the new HTTP/2.0 module nginx no longer sets the $server_protocol correctly. It should be ""HTTP/2.0"", but when it is passed to FastCGI via ""fastcgi_param"", it shows up as an empty string.

var_dump() of $_SERVER shows:
{{{
#!php
  [""SERVER_PROTOCOL""]=>
  string(0) """"
}}}

when it should be:

{{{
#!php
  [""SERVER_PROTOCOL""]=>
  string(8) ""HTTP/2.0""
}}}

This is important as it is best practice to use this value in PHP to set HTTP response status, for example:
{{{
#!php
<?php header($_SERVER['SERVER_PROTOCOL'].' 401 Unauthorized'); ?>
}}}

Which the result is "" 401 Unauthorized"", which is invalid and is ignored."	defect	closed	major		nginx-core	1.9.x	duplicate	protocol http2 FastCGI		Linux homer 2.6.32-573.3.1.el6.x86_64 #1 SMP Thu Aug 13 22:55:16 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.9.5
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC) 
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: --without-http_memcached_module --with-http_ssl_module --with-http_v2_module --with-ipv6 --without-http_browser_module --without-http_empty_gif_module --without-http_limit_conn_module --without-http_ssi_module --without-http_userid_module --without-http_geo_module --without-http_uwsgi_module --without-http_scgi_module"