nginx 默认配置时带下划线的header被过滤掉

http请求header中带有下划线不向后端转发，必须添加underscores_in_headers on; 参数到 default server中

server {
    listen       443 ssl;
    server_name  test.*******.com;
    ssl_certificate /etc/letsencrypt/live/test.*******.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/test.*******.com/privkey.pem;
    ssl_protocols SSLv2 SSLv3 TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    underscores_in_headers on;

    #charset koi8-r;

    #access_log  logs/host.access.log  main;

    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_pass http://127.0.0.1:9001/;
    }

    location /chat {
      proxy_pass http://127.0.0.1:9001/chat;
      proxy_http_version 1.1;
              proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection $connection_upgrade;
    }
}