Better handling of late upstream creation. Configuration with duplicate upstream blocks defined after first use, i.e. like server { ... location / { proxy_pass http://backend; } } upstream backend { ... } upstream backend { ... } now correctly results in "duplicate upstream" error. Additionally, upstream blocks defined after first use now handle various server directive parameters ("weight", "max_fails", etc.). Previously configuration like server { ... location / { proxy_pass http://backend; } } upstream backend { server 127.0.0.1 max_fails=5; } incorrectly resulted in "invalid parameter "max_fails=5"" error.

scgi_param  REQUEST_METHOD     $request_method;
scgi_param  REQUEST_URI        $request_uri;
scgi_param  QUERY_STRING       $query_string;
scgi_param  CONTENT_TYPE       $content_type;

scgi_param  DOCUMENT_URI       $document_uri;
scgi_param  DOCUMENT_ROOT      $document_root;
scgi_param  SCGI               1;
scgi_param  SERVER_PROTOCOL    $server_protocol;

scgi_param  REMOTE_ADDR        $remote_addr;
scgi_param  REMOTE_PORT        $remote_port;
scgi_param  SERVER_PORT        $server_port;
scgi_param  SERVER_NAME        $server_name;