[1.x] Fix IP address retrieval when using reverse proxy #49
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This pull request fixes the issue where the request()->ip() method doesn't return the correct IP address when using a reverse proxy (such as Nginx or Cloudflare).
When a reverse proxy is used, the IP address of the proxy is returned instead of the client's real IP. To address this, the code now checks the X-Forwarded-For header to retrieve the correct client IP.