开始wss服务会自动关闭连接

     location /wss
  {
    proxy_pass http://127.0.0.1:86;
    proxy_http_version 1.1; 
    proxy_connect_timeout 4s; #配置点1
    proxy_read_timeout 60s; #配置点2
    proxy_send_timeout 12s; #配置点3
    proxy_set_header Upgrade $http_upgrade; 
    proxy_set_header Connection "Upgrade";
  }