websocket部署上linux无法访问问题解决，Nginx配置websocket

nginx.conf内容添加如下内容

    #自定义变量 $connection_upgrade
    map $http_upgrade $connection_upgrade {
    
     
        default          keep-alive;  #默认为keep-alive 可以支持 一般http请求
        'websocket'      upgrade;     #如果为websocket 则为 upgrade 可升级的。
    }

        location /socket.io/ {
    
    
            proxy_pass http://localhost:9999;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade; #此处配置 上面定义的变量
            proxy_set_header Connection $connection_upgrade;
        }

完整内容

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    
    
    worker_connections  1024;
}


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  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
	
#	upstream myserver{
    
    
#		server 139.155.54.93:8888;
#		server 139.155.54.93:9999;
#	}

    #自定义变量 $connection_upgrade
    map $http_upgrade $connection_upgrade {
    
     
        default          keep-alive;  #默认为keep-alive 可以支持 一般http请求
        'websocket'      upgrade;     #如果为websocket 则为 upgrade 可升级的。
    }

    server {
    
    
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;
        

        location / {
    
    
           root   /mysoft/dist/;   #3.dist文件的位置(我是直接放在home目录下了) 
        #   index index.html;  
            try_files $uri $uri/ /index.html;     #4.重定向,内部文件的指向(照写)
        #   error_page 405 =200 http://$host$request_uri;
        #   proxy_pass http://localhost:8079;
        #   add_header 'Access-Control-Allow-Origin' '*'; //允许跨域
        }
        location /api {
    
      #4.当请求跨域时配置端口转发
            proxy_pass http://localhost:8081/; #5.转发地址
        }
    
        location /socket.io/ {
    
    
            proxy_pass http://localhost:9999;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade; #此处配置 上面定义的变量
            proxy_set_header Connection $connection_upgrade;
        }    

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
    
    
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
    
    
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
    
    
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
    
    
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    
    
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    
    
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    
    
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

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

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    
    
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}