I'm looking to implement a basic authentication system using IP addresses, where only whitelisted IPs can access the API. However, I've encountered an issue with obtaining the user's actual IP address when using request.ip, as it only returns ::1 which is not a valid IP.
How can I retrieve the user's IP Address in nestjs? Below is my current code:
import {
Injectable,
CanActivate,
ExecutionContext,
Logger,
} from '@nestjs/common';
import { Observable } from 'rxjs';
@Injectable()
export class AuthGuard implements CanActivate {
canActivate(
context: ExecutionContext,
): boolean | Promise<boolean> | Observable<boolean> {
const request = context.switchToHttp().getRequest();
const allowedIp: Array<string> = ['129.2.2.2', '129.2.2.2'];
if (process.env.ENV === 'production') {
const ip = request.connection.remoteAddress;
Logger.log(ip, 'ACCESSED IP ADDRESS');
if (allowedIp.includes(ip)) {
return true;
} else {
return false;
}
} else {
return true;
}
}
}
Edit:
It appears that ::1 is a valid address for 'localhost'. However, when deployed on a server and accessed from a browser, it logs ::ffff:127.0.0.1 instead of the real IP address.