Welcome! Log In Create A New Profile


HTTP 400 error on reverse prxy

Posted by Webber8443 
HTTP 400 error on reverse prxy
January 04, 2024 06:00AM
Hello all,

I get an 400 error when i try to forward ssl traffic from my subdomain to my docker container on the same machine.

My conf file in nginx:

server {
large_client_header_buffers 4 64k;
if ($host = sub.domain.com) {
return 301 https://$host$request_uri;
} # managed by Certbot

error_log /var/log/nginx/logging/80.log debug;
listen 80;
listen [::]:80;
server_name sub.domain.com;
return 301 https://$host$request_uri;


server {
keepalive_timeout 60;
error_log /var/log/nginx/logging/443.log debug;
listen 443 ssl;
listen [::]:443 ssl;
server_name sub.domain.com;
ssl_certificate /etc/letsencrypt/live/sub.domain.com/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/sub.domain.com/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf;
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
ssl_session_cache shared:TLSSSL:16m;

location / {
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto "https";
proxy_read_timeout 90;



The sub.domain.com is forwaded with an a-record to the server of my public ubuntu server.
When i try sub.domain.com it shows a valid certificate, but with the 400 server error.

There are no errors in my Nginx error log.
In the 443.log i can see the error for the 400 status:

2024/01/04 10:46:50 [debug] 339772#339772: *3350 http proxy status 400 "400 Bad Request"
2024/01/04 10:46:50 [debug] 339772#339772: *3350 http proxy header: "Date: Thu, 04 Jan 2024 10:46:50 GMT"
2024/01/04 10:46:50 [debug] 339772#339772: *3350 http proxy header: "Connection: close"

When i curl to i get a valid reponse. Firewall is completly disabled.

Hoping somebody can point me to the right direction for fixing this.

Thanks in advance.
Sorry, only registered users may post in this forum.

Click here to login

Online Users

Guests: 227
Record Number of Users: 8 on April 13, 2023
Record Number of Guests: 500 on July 15, 2024
Powered by nginx      Powered by FreeBSD      PHP Powered      Powered by MariaDB      ipv6 ready