Using x-forwarded-for to fetch google search

Question

I am creating a proxy that compresses data fetched from website before serving to user "browser". Everything works fine except google search. The problem is that even though I transfer IP address of user via X-FORWARDED-FOR , yet I get results based on US (where my servers are located).

I am using PHP curl to fetch pages and have tried setting CURLOPT_HTTPHEADER with X_FORWARDED_FOR , X-FORWARDED-FOR , REMOTE_ADDR and HTTP_X_FORWARDED_FOR with user's IP address, but none helped.

Any idea now how to convince google that my location is eg Japan not US where my servers are located.

Edit: There is a solution using iframe, but that's not the solution that I am looking for. How does any other service which compress website data before delivering solve this problem.

Answer 1

This is how I solved this problem by using user country to find google's country specific search domain and direct the traffic to that domain.

Here is List of google search domains