How to get client IP address in AEM

Question

How to get the client ip address in a easy way through AEM either using dispatcher or any other method.

Sanjay_Bangar · Accepted Answer

Hi @kbitra1998 ,

You need to add something in configuration like below.

APACHE CONFIGURATION FILE: /etc/httpd/conf.d/httpd.conf

<IfModule remoteip_module> RequestHeader edit X-Forwarded-For ([0-9]+(?:\.[0-9]+){3})(:[0-9]+)? $1 early # valid for ALB, ELB, AppGateway or Load Balancer + CloudFront RemoteIPHeader X-Forwarded-For # valid for ALB, ELB, AppGateway or Load Balancer + Akamai RemoteIPHeader True-Client-IP </IfModule>

The above change will make sure the user’s IP address is added to the request header. The name of the header is X-Forwarded-For.

Also, the header will have 2 IP addresses ( comma separated ). We have to make sure we read the first IP address from the CSV string.

Asutosh_Jena_ · Answer

Hi @kbitra1998

You can write one Util class in JAVA and add the following code into it.

public static String getClientIPAddress(HttpServletRequest request) {
    String xForwardedForHeader = request.getHeader(HttpHeaders.X_FORWARDED_FOR);
    if (xForwardedForHeader == null) {
        return request.getRemoteAddr();
    } else {
        return new StringTokenizer(xForwardedForHeader, ",").nextToken().trim();
    }
}

This will always return the client IP address irrespective of ALB, ELB, CDN whatever.

Thanks!

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