Get Client IP instead of Proxy's

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i know this has a million answers here, but what do you do when after all this you still get the Proxy's IP instead of the client's? i have tried a lot of solutions, but none of them work. I always end up with Proxy's IP instead of the client's. any help?
the JS i tried to use:

XML

<script type="application/javascript">
  function getIP(json) {
  // document.write("My public IP address is: ", json.ip);
    var ip=json.ip;
    document.getElementById('IPaddr').value = json.ip;

      }
function LoadJsonDataFunction()
{
  $.getJSON("https://api.ipify.org?format=jsonp&callback=getIP", function(obj) {
    $.each(obj.ip, function(key, value){
      $("IPaddr").append(value.ip);
    });
  });
}
 </script>
// <script type="application/javascript" src="https://api.ipify.org?format=jsonp&callback=getIP"></script>

the hidden HTML field's value:

<input type="hidden" name="IPaddr" value="" />

but the $_POST['ip'] is always NULL.

Posted 24-Jul-15 3:46am

RevathySanthanam

Updated 24-Jul-15 4:40am

v2

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Mohibur Rashid 25-Jul-15 13:17pm

I am not going to tell you about ip address but your jquery statement:
$("input[name='IPaddr']").val(value.ip);

2 solutions

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Dave Kreskowiak · Answer 1 · 2015-07-24T04:00:00

Solution 2

Learn how proxy servers and TCP/IP work.

It's IMPOSSIBLE to get the client IP because it's never sent to you. The client from your servers point of view IS the proxy!

Proxy servers don't talk to your server and say "Hey, I'm a proxy making this request on behalf of this client". It says "Hey, I'm your client, this is my request".

See the difference? This is why you cannot get the real client IP.

Posted 24-Jul-15 4:00am

Dave Kreskowiak

Updated 24-Jul-15 4:09am

v2

Comments

RevathySanthanam 24-Jul-15 10:26am

i understand that. but i tried with JS too (as commented to above solution). is it not possible even then?

Dave Kreskowiak 24-Jul-15 13:58pm

What part of "IMPOSSIBLE" do you not understand? It already told you why it will never work no matter what you do.

[no name] 24-Jul-15 10:30am

Clear Explanation, thank you for this, my small 5.

F-ES Sitecore · Answer 2 · 2015-07-24T03:52:00

Solution 1

The reason you can't find a solution is because there is none, that is just how the internet works. You'll need to capture the IP at the client (somehow) and send that to the server (somehow). If you are looking for a server-only solution then there isn't one, and that won't change no matter how many times this question is asked.

Posted 24-Jul-15 3:52am

F-ES Sitecore

Comments

RevathySanthanam 24-Jul-15 10:26am

Right, I read that the client's IP doesnt even reach the server, so I tried to use Javascript to access API's data to get client IP but I am unable to get that value from Javascript into my HTML form i'm using. I tried to give it as value to a hidden input, echo using script tag, all the time I got an empty result. The JS variable value expires by the time it comes to the HTML body. Anyway I can get that JS var into PHP or HTML?

F-ES Sitecore 24-Jul-15 10:35am

I'm not aware of any way to get this data via javascript either, you'd have to update your question to include any code you are currently using.

RevathySanthanam 24-Jul-15 10:41am

i just did that. could u maybe have a look?

F-ES Sitecore 24-Jul-15 10:56am

You update a hidden field using $("#IPaddr").val(value.ip) however that still isn't going to work, all that is happening is that the api you are calling is doing the same "Get request IP address" code on the server, so you're still going to get the proxy's IP address. The thing that reads the IP is still happening on the remote server even though you are instigating that call via the client.

RevathySanthanam 24-Jul-15 11:01am

but when i just try to display that value from the JS, i get the required IP. now the issue is, to gte that value from JS and use in my other part of the code.