将 www https 站点重定向到非 www https 导致 nginx 中的重定向过多

Question

我在 Laravel 中有一个项目，我正在使用带有 nginx 的数字海洋，我尝试将 www 重定向到非 www url 但我不能，这是我的 nginx 配置：

example.com

 server{
  listen 80;
  listen [::]:80;
  server_name example.com www.example.com;
  return 301 https://$host$request_uri;
}

server{

   listen [::]:443 ssl;
   listen 443 ssl;
   server_name www.example.com;

    ssl_certificate /etc/letsencrypt/live/www.example.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/www.example.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

   return 301 https://$host$request_uri;

}

server {

  listen [::]:443 ssl;
  listen 443 ssl;
  server_name example.com;

  root /var/www/website/production/public;
  index index.php index.html;

  charset utf-8;

  location / {
     try_files $uri $uri/ /index.php?$query_string;
  }

  error_page 404 /index.php;

  location ~ \.php$ {
    fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
    include fastcgi_params;
  }
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}

https://example.com //有效

http://example.com -> https://example.com //有效

http://www.example.com -> https://www.example.com // 重定向到 www https，重定向太多

https://www.example.com // 重定向太多。

我希望人们访问 http://www.example.com,http://example.com 和 https://www.example.com 它重定向到 https://example.com, 我能做什么做？谢谢。

Answer 1

第二个 server 块包含一个循环：

server{
    listen [::]:443 ssl;
    listen 443 ssl;
    ...
    return 301 https://$host$request_uri;
}

$host的值与请求的域相同。此块的目的是将请求的域从 www.example.com 更改为 example.com.

最简单的解决方案是更改return语句并显式指定最终域名：

return 301 https://example.com$request_uri;

将 www https 站点重定向到非 www https 导致 nginx 中的重定向过多

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