Using Nginx as a reverse proxy to deploy Wave apps

[n-srinidhi]

Hi! I am deploying a Wave Dashboard app to production. I need to use Nginx to configure a reverse proxy to map a path to a required port. This is to avoid opening up ports for hosting Wave app. I found this repo for the same.

I tried setting it up myself following the example but seem to be running into problems:

This is my nginx.conf file:

#user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log notice;
#pid        nginx.pid;

events {
    worker_connections  10000;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;

    keepalive_timeout  65;


    include conf.d/*.conf;
}

And then, Enabling web sockets and adding info in another config file stored in conf.d directory in the main directory where nginx is stored.

# Enable websockets.
# http://nginx.org/en/docs/http/websocket.html
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

server {
	
   listen       443 ssl;
    ssl_certificate      wildcard_century_ae.pfx;
    ssl_certificate_key  wildcard_century_ae.pfx

    ssl_session_cache    shared:SSL:1m;
    ssl_session_timeout  5m;

    ssl_ciphers  HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers  on;
	
    location / {
        proxy_http_version 1.1;
        # app is a hostname of the container running the app.
        # If running on the same host, use localhost.
        #proxy_pass http://localhost:10101/;
		
	proxy_pass http://localhost:10101/;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header X-Forwarded-Proto http;
        proxy_set_header X-NginX-Proxy true;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        proxy_redirect off;
    }
}

I dont have a domain name mapped so i skipped the server name. I added SSH certification files for encryption and checked on
https://localhost:10101/ but the issue persists.

Update: I got my proxy server running by Nginx, But I think the issue is in the server communicating with the web server using web sockets because I'm getting the following error on my Wave Server Console:

2023/11/23 13:36:02 # {"err":"websocket: the client is not using the websocket protocol: 'upgrade' token not found in 'Connection' header","t":"socket_upgrade"}

I have added this to My Nginx conf file and still get this:

map $http_upgrade $connection_upgrade {
		default upgrade;
		''      close;
	}	
    server {
        listen       4444;
        #server_name  localhost;
        location / {
		proxy_http_version 1.1;
        # Change to your wave server address.
        proxy_pass http://localhost:10101/;

        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header X-Forwarded-Proto http;
        proxy_set_header X-NginX-Proxy true;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
	}

[mturoci]

Does the example repo work though?