Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g., so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:

I ran this command:

It produced this output:

My web server is (include version):

nginx version: nginx/1.14.0 (Ubuntu)

The operating system my web server runs on is (include version):

Ubuntu 18.04 lts

My hosting provider, if applicable, is:

kimsufi (ovh)

I can login to a root shell on my machine (yes or no, or I don’t know):


I’m using a control panel to manage my site (no, or provide the name and version of the control panel):


The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):

certbot 0.31.0



We have a nginx webserver with websocket listening port: 4297

We have configured a proxy that listens port: 7777 ssl and forwards it to port: 4297

When we try connecting without using ssl with ws everything works fine, but when we add ssl when our app tries to connect with port: 7777 we get this error in return:


We already did several tests but we always have the same results. What are we doing wrong?

Thank you.

1 Like

Hi @IvanZD

there is a working port 443.

Port 7777 doesn't answer. So where runs that port 7777?

Use the port 443 as template.

Additional problem with a wss: Sometimes the ip is used to connect the webservice. That's always wrong, check, if the domain name is used.

1 Like

thank you for your help, we've made it work!


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