SSL Proxy via NGINX does not establish a connection (Unity, Linux)

[Yogsther]

I am hosting a game server (Websocket-sharp + Unity Headless) on a linux server with NGINX as a proxy.

NGINX configuration

server {
	
    server_name game.okdev.se; # managed by Certbot

    location / {
        proxy_http_version 1.1;
        proxy_pass         http://localhost:5009;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header HOST $host;
        proxy_set_header X_Forwarded_For $remote_addr;
        proxy_redirect default;
        client_max_body_size 1000m; 
    }

    listen [::]:443 ssl; # managed by Certbot
    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/game.okdev.se/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/game.okdev.se/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}

Server C# code I'm not using SSL with C# but rather the SSL part should be handled by NGINX, this exact setup has worked for previous projects using NodeJS and Websockets. The only path for my Websocket server is /

wssv = new WebSocketServer(port);
wssv.AddWebSocketService("/", () => new SocketInstance(this));

Unity Client C# code Connecting via NGINX and SSL does not work at all.

ws = new WebSocket("wss://game.okdev.se/");

Connecting with the Unity client to the direct (port forwarded) port, without SSL and bypassing NGINX works.

ws = new WebSocket("ws://game.okdev.se:5009/");

[karstenpt]

@yogehster I have the same issue and trying much things since many days. Any news on your end ? did you solve it somehow ? : (

[Ken2050]

Have the same issue here, and when "bypass" with ws and local port behind NGINX it works.

I first tried MS "System.Net.WebSockets.ClientWebSocket" and that library do connect via NGINX but I find it messy to work with, I prefere asing WebSocketSharp.

Any solution on this issue?

I'm using 1.0.3-rc11

[zhongzichang]

I fixed the same issue.

wssv = new WebSocketServer(port);
wssv.AllowForwardedRequest = true;