Nginx 配置 WebSocket 代理的操作过程

...
http:{
  ...
  server{
    ...
    # WebSocket代理
    location /wsUrl/ {
      rewrite ^/wsUrl/(.*)$ /$1 break; #拦截标识去除
      proxy_pass http://192.168.100.20:8080; #这里是http不是ws，不用怀疑，代理的ip和port写ws访问的实际地址
      proxy_http_version 1.1; #这里必须使用http 1.1
      #下面两个必须设置，请求头设置为ws请求方式
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
    }
    ...
  }
  ...
}

http {
    include       mime.types;
    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  index.html index.htm;
        }
        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/access.log  main;

user nobody;  
worker_processes  6;  
#nginx 开启多核设置，目前185的机子，都是6核  
worker_cpu_affinity 000001 000010 000100 001000 010000 100000;  
#error_log  logs/error.log;  
#error_log  logs/error.log  notice;  
#error_log  logs/error.log  info;  
error_log  /var/log/nginx/error.log info;  
#进程文件  
pid        /var/run/nginx.pid;  
worker_rlimit_nofile 1024;  
events {  
    use epoll; # 修改这里  
    worker_connections  1024;  
}
# 设置http 服务器  
http {  
    include       mime.types; #文件扩展名与文件类型映射表  
    default_type  application/octet-stream; #默认文件类型  
    charset utf-8; #默认编码  
    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 $binary_remote_addr zone=test:10m rate=10r/s;  
    #日志配置  
    log_format  main  '$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: 客户端的IP地址。  
            #$remote_user: 使用HTTP基本身份验证的情况下，远程用户的用户名。  
            #$time_local: 本地时间的访问时间。  
            #$request: 客户端请求的内容。  
            #$status: 服务器响应的HTTP状态码。  
            #$body_bytes_sent: 发送给客户端的字节数，不包括响应头的大小。  
            #$http_referer: 引用页面的URL。  
            #$http_user_agent: 客户端的User-Agent字符串，标识客户端的浏览器和操作系统等信息。  
            #$http_x_forwarded_for: X-Forwarded-For 头，用于标识原始客户端的IP地址，当请求通过代理服务器时使用。  
            #$upstream_addr: 后端（上游）服务器的IP地址。  
            #$upstream_response_time: 从后端服务器接收响应的时间。  
            #$request_time: 客户端发起请求到收到响应的总时间。  
    access_log /var/log/nginx/nginx-access.log 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;  
        }  
    }  
}