Nginx + PHP7.0-FPM VestaCP — Curl не работает с прокси

я использую панель управления Веста( nginx + PHP7-FPM) this is ubuntu 16.4, Я получаю пустой ответ от curl, когда я использую прокси на нем, иначе он работает нормально.

function checkpoint($xxxx, $useragent, $url, $cookie = 0, $data = 0, $httpheader = array(), $proxy = 0){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_ENCODING, '');
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
curl_setopt($ch, CURLOPT_VERBOSE, false);
if($proxy){
curl_setopt($ch, CURLOPT_PROXY, $proxy);
}
curl_setopt($ch, CURLOPT_HEADER, 1);
$response = curl_exec($ch);
$httpcode = curl_getinfo($ch);
return array($httpcode, $response);
}
}

Это вернет мне пустой вывод.

мой nginx файл конфигурации

    # Server globals
user                    www-data;
worker_processes        auto;
worker_rlimit_nofile    65535;
error_log               /var/log/nginx/error.log crit;
pid                     /var/run/nginx.pid;


# Worker config
events {
worker_connections  1024;
use                 epoll;
multi_accept        on;
}


http {
# Main settings
sendfile                        on;
tcp_nopush                      on;
tcp_nodelay                     on;
client_header_timeout           1m;
client_body_timeout             1m;
client_header_buffer_size       2k;
client_body_buffer_size         256k;
client_max_body_size            256m;
large_client_header_buffers     4   8k;
send_timeout                    300;
keepalive_timeout               60 60;
reset_timedout_connection       on;
server_tokens                   off;
server_name_in_redirect         off;
server_names_hash_max_size      512;
server_names_hash_bucket_size   512;
fastcgi_buffering               off;


# Log format
log_format  main    '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
log_format  bytes   '$body_bytes_sent';
#access_log          /var/log/nginx/access.log main;
access_log off;


# Mime settings
include             /etc/nginx/mime.types;
default_type        application/octet-stream;

# Proxy settings
proxy_redirect      off;
proxy_set_header    Host            $host;
proxy_set_header    X-Real-IP       $remote_addr;
proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass_header   Set-Cookie;
proxy_connect_timeout   90;
proxy_send_timeout  90;
proxy_read_timeout  90;
proxy_buffers       32 4k;


# Compression
gzip                on;
gzip_comp_level     9;
gzip_min_length     512;
gzip_buffers        8 64k;
gzip_types          text/plain text/css text/javascript text/js text/xml application/json application/javascript application/x-javascript application/xml application/xml+rss application/x-font-ttf image/svg+xml font/opentype;
gzip_proxied        any;
gzip_disable        "MSIE [1-6]\.";


# Cloudflare https://www.cloudflare.com/ips
set_real_ip_from   103.21.244.0/22;
set_real_ip_from   103.22.200.0/22;
set_real_ip_from   103.31.4.0/22;
set_real_ip_from   104.16.0.0/12;
set_real_ip_from   108.162.192.0/18;
set_real_ip_from   131.0.72.0/22;
set_real_ip_from   141.101.64.0/18;
set_real_ip_from   162.158.0.0/15;
set_real_ip_from   172.64.0.0/13;
set_real_ip_from   173.245.48.0/20;
set_real_ip_from   188.114.96.0/20;
set_real_ip_from   190.93.240.0/20;
set_real_ip_from   197.234.240.0/22;
set_real_ip_from   198.41.128.0/17;
#set_real_ip_from   2400:cb00::/32;
#set_real_ip_from   2606:4700::/32;
#set_real_ip_from   2803:f800::/32;
#set_real_ip_from   2405:b500::/32;
#set_real_ip_from   2405:8100::/32;
#set_real_ip_from   2c0f:f248::/32;
#set_real_ip_from   2a06:98c0::/29;
real_ip_header     CF-Connecting-IP;


# SSL PCI Compliance
ssl_session_cache   shared:SSL:10m;
ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers        "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";


# Error pages
error_page          403          /error/403.html;
error_page          404          /error/404.html;
error_page          502 503 504  /error/50x.html;


# Cache settings
proxy_cache_path /var/cache/nginx levels=2 keys_zone=cache:10m inactive=60m max_size=1024m;
proxy_cache_key "$host$request_uri $cookie_user";
proxy_temp_path  /var/cache/nginx/temp;
proxy_ignore_headers Expires Cache-Control;
proxy_cache_use_stale error timeout invalid_header http_502;
proxy_cache_valid any 1d;



# Cache bypass
map $http_cookie $no_cache {
default 0;
~SESS 1;
~wordpress_logged_in 1;
}


# File cache settings
open_file_cache          max=10000 inactive=30s;
open_file_cache_valid    60s;
open_file_cache_min_uses 2;
open_file_cache_errors   off;


# Wildcard include
include             /etc/nginx/conf.d/*.conf;
}