Sample code for Nginx to configure WebSocket proxy

...
http:{
  ...
  server{
    ...
    # WebSocket Agent    location /wsUrl/ {
      rewrite ^/wsUrl/(.*)$ /$1 break; #Intercepting the logo removal      proxy_pass http://192.168.100.20:8080; #Here is http not WS, no doubt, the proxy's IP and port write the actual address of WS access      proxy_http_version 1.1; #http 1.1 must be used here      #The following two must be set, and the request header is set to WS request method      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
    }
    ...
  }
  ...
}

http {
    include       ;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    
    map $http_upgrade $connection_upgrade {
		default upgrade;
		''      close;
	}
	
    server {
        listen       9001;
        server_name  localhost;

        location / {
            root   html;
            index   ;
        }

        location ^~ /websocket {
            proxy_pass http://localhost:8090/;
            proxy_http_version 1.1;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_read_timeout 120s;

            proxy_set_header Upgrade websocket;
            proxy_set_header Connection Upgrade;
        }
    }
}

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"'
                       '$upstream_addr $upstream_response_time $request_time ';
access_log  logs/  main;

user nobody;  
worker_processes  6;  
  
  
#nginx enables multi-core settings. Currently, the 185 machines are all 6 cores.worker_cpu_affinity 000001 000010 000100 001000 010000 100000;  
#error_log  logs/;  
#error_log  logs/  notice;  
#error_log  logs/  info;  
  
  
error_log  /var/log/nginx/ info;  
  
#Process Filepid        /var/run/;  
  
worker_rlimit_nofile 1024;  
  
events {  
    use epoll; # Modify here    worker_connections  1024;  
}

# Set up the http serverhttp {  
    include       ; #File extension and file type mapping table    default_type  application/octet-stream; #Default file type    charset utf-8; #Default encoding    fastcgi_connect_timeout 2000;  
    fastcgi_send_timeout 2000;  
    fastcgi_read_timeout 2000;  
    client_max_body_size 1024m;  
    sendfile on;  
    tcp_nopush on;  
    tcp_nodelay on;  
    keepalive_timeout 120;  
    gzip  on;  
    limit_req_zone $binary_remote_addr zone=test:10m rate=10r/s;  
  
    #Log Configuration    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '  
                          '$status $body_bytes_sent "$http_referer" '                          '"$http_user_agent" "$http_x_forwarded_for"'                           '$upstream_addr $upstream_response_time $request_time ';  
            #$remote_addr: The IP address of the client.            #$remote_user: The username of the remote user when using HTTP basic authentication.            #$time_local: Access time for local time.            #$request: The content requested by the client.            #$status: HTTP status code for the server response.            #$body_bytes_sent: The number of bytes sent to the client, excluding the size of the response header.            #$http_referer: The URL of the reference page.            #$http_user_agent: The User-Agent string of the client, which identifies the client's browser and operating system and other information.            #$http_x_forwarded_for: X-Forwarded-For header, used to identify the IP address of the original client, and used when requesting to pass through the proxy server.            #$upstream_addr: The IP address of the backend (upstream) server.            #$upstream_response_time: The time to receive the response from the backend server.            #$request_time: The total time the client initiates the request to receive the response.    access_log /var/log/nginx/ main;
	map $http_upgrade $connection_upgrade {  
	    default upgrade;  
	    ''      close;  
	}
    server {  
        listen 9001;  
        server_name  10.6.30.185;  
        location ^~ /websocket {  
            proxy_pass http://10.6.3.46:8001;  
            proxy_http_version 1.1;  
            proxy_set_header Host $host;  
            proxy_set_header X-Real-IP $remote_addr;  
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  
            proxy_read_timeout 120s;  
            proxy_set_header Upgrade $http_upgrade;  
            proxy_set_header Connection $connection_upgrade;  
        }  
    }  
}