nginx proxy buffering bug

gistfile1.txt

将proxy_buffering 默认为on时，需设置
proxy_buffers 20 1000k;
proxy_buffer_size 20k;
如果关闭proxy buffering，也可解决问题。

location / {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
#### added per benoitc/gunicorn: Issue #790:
####
proxy_buffering off;
# proxy_buffers 20 1000k; "when proxy_buffering is set to be on"
# proxy_buffer_size 20k; "when proxy_buffering is set to be on"
proxy_http_version 1.1;
proxy_set_header Connection "";
####
####
proxy_redirect off;

        proxy_pass   http://app_server;
    }
}
}