Nginx - Configuring WebSockets

add the following into the server block:

# necessary stuff for websockets
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection “Upgrade”;

# extras?
proxy_set_header Host $host;
proxy_read_timeout 86400;

• first line tells Nginx to use 1.1 when communicating to the Node backend, which is required for WebSockets
• next two tell Nginx to respond to the Upgrade request which is initiated over HTTP by the browser when it wants to use a WebSocket

Example Server Block

server {
    listen 8080;
    server_name chat.marcuschiu.com;

    location / {
        proxy_pass http://192.168.0.2:8080;
		
		# necessary stuff for websockets
	    proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";

		# extras?
        proxy_set_header Host $host;
        proxy_read_timeout 86400;
    }
}