The domain company that you talked to may have done a poor job of explaining how domains work. Domain names don’t refer to specific ports. They just refer to IP addresses. The client can look up a hostname to get the IP address which the client should connect to, but the client has to figure … Read more
I suppose that your problem is that you are running server somewhere in local network, so you get your IP in that network. However when you are trying to use online service that discovers your IP address your IP is the IP of your service provider’s router or something like this. Using request.getRemoteAddr() is correct. … Read more
Don’t use a regex when you don’t need to 🙂 $valid = filter_var($string, FILTER_VALIDATE_IP); Though if you really do want a regex… $valid = preg_match(‘/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\z/’, $string); The regex however will only validate the format, the max for any octet is the max for an unsigned byte, or 255. This is why IPv6 is necessary – … Read more
I was confused by this answer. Apparently my docker image should be reachable on port 8080. But it wasn’t. Then I read https://docs.docker.com/network/host/ To quote The host networking driver only works on Linux hosts, and is not supported on Docker for Mac, Docker for Windows, or Docker EE for Windows Server. That’s rather annoying as … Read more
You should be able to use getByName or getByAddress. The host name can either be a machine name, such as “java.sun.com”, or a textual representation of its IP address InetAddress addr = InetAddress.getByName(“127.0.0.1”); The method that takes a byte array can be used like this: byte[] ipAddr = new byte[]{127, 0, 0, 1}; InetAddress addr … Read more
Make sure that the host flag is set to 0.0.0.0, when running the server— 0.0.0.0 means all IPv4 addresses on the local machine. If a host has two IP addresses, e.g., 192.168.10.2 and 10.1.2.5, and the server running on the host listens on 0.0.0.0, it will be reachable at both of those IPs. For example, … Read more
The DNS variants work across the network, but one DNS entry can have many IP addresses and one IP address can have many DNS entries. More importantly, an address needn’t be bound to a DNS entry at all. For the local machine try this: foreach (NetworkInterface netInterface in NetworkInterface.GetAllNetworkInterfaces()) { Console.WriteLine(“Name: ” + netInterface.Name); Console.WriteLine(“Description: … Read more
Option 1: Use spring-security-web‘s IpAddressMatcher. Unlike Apache Commons Net, it supports both ipv4 and ipv6. import org.springframework.security.web.util.matcher.IpAddressMatcher; … private void checkIpMatch() { matches(“192.168.2.1”, “192.168.2.1”); // true matches(“192.168.2.1”, “192.168.2.0/32”); // false matches(“192.168.2.5”, “192.168.2.0/24”); // true matches(“92.168.2.1”, “fe80:0:0:0:0:0:c0a8:1/120”); // false matches(“fe80:0:0:0:0:0:c0a8:11”, “fe80:0:0:0:0:0:c0a8:1/120”); // true matches(“fe80:0:0:0:0:0:c0a8:11”, “fe80:0:0:0:0:0:c0a8:1/128”); // false matches(“fe80:0:0:0:0:0:c0a8:11”, “192.168.2.0/32”); // false } private boolean matches(String ip, … Read more
<?php $user_ip = getenv(‘REMOTE_ADDR’); $geo = unserialize(file_get_contents(“http://www.geoplugin.net/php.gp?ip=$user_ip”)); $country = $geo[“geoplugin_countryName”]; $city = $geo[“geoplugin_city”]; ?>
Currently there are several options: ip.42.pl jsonip.com httpbin.org ipify.org Below are exact ways you can utilize each of the above. ip.42.pl from urllib2 import urlopen my_ip = urlopen(‘http://ip.42.pl/raw’).read() This is the first option I have found. It is very convenient for scripts, you don’t need JSON parsing here. jsonip.com from json import load from urllib2 … Read more