id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1944	connect() failed (111: Connection refused) while connecting to upstream	mmuhammadeuss@…		"Hi Team
I'm experiencing 504 timeout error when accessing a JSP file in a directory (https://example.com/dev/index.jsp). The logs simply says this:

[error] 1840#0: *16408115 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.15.5, server: 192.168.15.4, request: ""GET /dev/index.jsp?error=%20not HTTP/1.1"", upstream: ""https://192.168.15.3:443//index.jsp?error=%20not""

I've never experienced this before. What is the solution for this type of 504 timeout error?

This is the nginx.conf:

user nginx;
worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include /opt/nginx/conf/mime.types;
    include /opt/nginx/conf/naxsi_core.rules;
    default_type  application/octet-stream;
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;
    sendfile        on;
    keepalive_timeout  65;
    tcp_nodelay on;
    gzip  on;
    gzip_disable ""MSIE [1-6].(?!.*SV1)"";

    server {
        listen 8081;
        server_name 192.168.15.4;
        access_log off ;
        error_log off ;
location /RequestDenied {
            return 403;
        }
error_page 403 /403_error.html;
        location = /403_error.html {
            root /usr/share/nginx/html;
            internal;
        }
 }
    server {
        listen 443 ssl;
        server_name 192.168.15.4;
        access_log /var/log/nginx/access.log;
        error_log off ;
        ssl_certificate /etc/ssl/certs/cert.crt;
        ssl_certificate_key /etc/ssl/private/keyy.key;
        
error_page 403 /403_error.html;
        location = /403_error.html {
            root /usr/share/nginx/html;
            internal;
        }


error_page 404 /404_error.html;
        location = /404_error.html {
            root /usr/share/nginx/html;
            internal;
        }


 location /dev/
         {
         include /opt/nginx/conf/naxsi.rules;
 rewrite ^/dev(.*) /$1 break;
proxy_connect_timeout 600;
proxy_send_timeout 600;
proxy_read_timeout 600;
send_timeout 600;
         proxy_pass https://192.168.15.3:443;
   }



I've never experienced this before. What is the solution for this type of 504 timeout error?
"	defect	closed	major	nginx-1.17	documentation	1.17.x	invalid	504 timeout error	mmuhammadeuss@…	Linux serveur 3.10.0-1062.12.1.el7.x86_64 #1 SMP Tue Feb 4 23:02:59 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.17.7
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/opt/nginx --add-module=/root/naxsi-master/naxsi_src/ --user=nginx --group=nginx --with-http_ssl_module --with-http_geoip_module --without-mail_pop3_module --without-mail_smtp_module --without-mail_imap_module --without-http_uwsgi_module --without-http_scgi_module"