我正在使用nginx为javaspring后端建立websocket连接，但是我的nginx在写状态下积累连接，一切正常，但是随着时间的推移，这个数字越来越大，导致我需要重新启动服务器。已经测试了几种配置，但问题仍然存在。。。下面我附上nginx配置文件nginx.conf

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  65535;
    multi_accept       on;
}

http {
    include       /etc/nginx/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;
    tcp_nopush on;
    tcp_nodelay on;
    reset_timedout_connection on;
    server_tokens        off;

    server_names_hash_bucket_size 64;

    map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

    server {
        listen 80;

        server_name www.mysite.com.br;

        return 301 https://$host$request_uri;
    }

    server {
        listen 443 ssl;
        server_name www.mysite.com.br;
        ssl on;
        ssl_certificate path_to_certificate/fullchain.pem;
        ssl_certificate_key path_to_certificate/privkey.pem;
        ssl_prefer_server_ciphers       on;
        ssl_protocols                   TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers                     ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS;

        location /socket{
            chunked_transfer_encoding off;
            proxy_cache off;

            proxy_http_version 1.1;

            proxy_set_header Connection "Upgrade";
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header X-NginX-Proxy true;
            proxy_request_buffering off;
            proxy_buffering off;

            #proxy_redirect off;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Host $server_name;
            proxy_set_header Host $host;
            proxy_pass http://backend:8080/socket;
        }
    }
}

nginx存根日志

Active connections:**1345**
server accepts handled requests
 10837 10837 11477 
Reading: 0**Writing: 1342**Waiting: 1