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IP2Nation.NET v1.1

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Downloads: 15
Change Set: 2c439afb86c8
Released: Jan 12, 2014
Updated: Jan 12, 2014 by adriancs
Dev status: Stable Help Icon

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Application Ip2Nation.cs - v1.1
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Application Demo - ASP.NET C#
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Release Notes

Include the IP info of:

Use REMOTE_ADDR as default IP to locate the Country Info.
If the client uses a proxy server or load balancing server, REMOTE_ADDR might not be the real Public IP. The real Public IP might defined in HTTP_CLIENT_IP or HTTP_X_FORWARDED_FOR.

If HTTP_CLIENT_IP is detected, it will be the real public IP for him/her.
If HTTP_CLIENT_IP is not existed, look for HTTP_X_FORWARDED_FOR.

HTTP_X_FORWARDED_FOR contains a list of IP separated by comma+space. Official format sequence of IP is:
  • Client IP, Proxy IP 1, Proxy IP 2....
but, unfortunately, not all the manufacturers or operators are following this sequence. There are lots of possibilities. However within the list of IP, only one IP (Public IP) is valid which represent him/her on global network on earth.

But, the bad news is, all HTTP_xxxx headers can be easily modified by user. User can use any IP address as they like. But this happens rarely, approximately 1% of your client might do this. (Normal user won't edit their http headers to trick your website). Therefore, the only reliable IP for identifying the origin of the client's country is REMOTE_ADDR and this database introduce by this tool can only retrieve Country from the IP (no Cities and Regions info), you can just stick to REMOTE_ADDR.

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