Isolate Laravel url to make it http while rest is https

Question

Introduction:

• I want to create a http (no secure) public url to process Redsys (payment gateway) callbacks.
• Why http? Because I have Cloudflare and they don't like their shared certificates -> handshake error
• Why not to upload my own certificate (single IP) to Cloudflare? Because I have to pay a monthly fee, and so far is a small project.
• Workaround? Create a http url and process the callbacks there

Situation:

• I'm using Laravel and I've created a route to my controller "/tpv"
• I've all the Nginx configuration ready, listening to 80

Problem:

• I've got too many redirects, because location /tpv calls Laravel (index.php/tpv) which is affected by location / {redirect to https}

Question:

• Any creative idea to solve this?

Idea:

• Create an external php script in a folder called tpv and from there call the Laravel controller, but no clue how to do this or if it's feasible.
• Delete the Ngnix conf and manage the redirects directly with Laravel as per post Laravel 5 - redirect to HTTPS

• Before changing to Nginx I was using Rewrites, it might be the solution:

  RewriteCond %{SERVER_PORT} 80 RewriteCond %{THE_REQUEST} !/tpv [NC]

Ngnix conf for reference:

server {
   listen 80;
   listen [::]:80;
   server_name .example.com;
   root /home/forge/example.com/public;
   location /tpv {
       return 301 http://example.com/index.php/tpv;
   }
   location /index.php/tpv {
       return 301 http://example.com/index.php/tpv;
   }
   location / {  # the default location redirects to https
        return 301 https://$host$request_uri;
   }
}

Answer 1

Prior to the good ideas you've got, try this simple magic code in conf ;)

server {
   listen 80;
   listen [::]:80;
   server_name .example.com;
   root /home/forge/example.com/public;

   location ^~  /tpv* {
       return 301 https://$host$request_uri;
   }

   try_files $uri $uri/ /index.php?$query_string;

   location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
    }
}