socket.io in nodejs client IP is google-proxy-[IP].google.com

[ghost]

hey i just notice something wrong with using socket.io for Chat Server
when i use native websockets i get clients real IP

but with socket.io some of my clients ip is 66.249.93.193
hostname is: google-proxy-66-249-93-193.google.com

so what google proxy is doing here? if i just edit my html and remove the socket.io and use only websockets all ip are correct

but when using socket.io i see this 66.249.93.193 ip for more than 20% of my clients

is socket.io using any remote server for sending packets ? that can be privacy problem and problem when i ban client by ip will ban many clients

my method to get client ip is this in nodejs
function getIP(req)
{
var ip =req.connection.remoteAddress ||
req.socket.remoteAddress ||
req.connection.socket.remoteAddress;
return ip.split(":").last(); ' // return last index in array
}

btw the ip i write here is not the only one there is many ips for the same google proxy hostname

any one here know what is this?

[ghost]

fixed

its that google Chrome mobile version

used: data compression proxy

https://developer.chrome.com/multidevice/data-compression

*** As a site owner, how do I perform IP geo-targeting?
The IP address of your device is forwarded to the destination server via the X-Forwarded-For header. Site owners should check for this header to correctly determine the location of the user based on client's IP address.

[darrachequesne]

That issue was closed automatically. Please check if your issue is fixed with the latest release, and reopen if needed (with a fiddle reproducing the issue if possible).