You can use this function to get proper client IP: public function getClientIP(){ if (array_key_exists(‘HTTP_X_FORWARDED_FOR’, $_SERVER)){ return $_SERVER[“HTTP_X_FORWARDED_FOR”]; }else if (array_key_exists(‘REMOTE_ADDR’, $_SERVER)) { return $_SERVER[“REMOTE_ADDR”]; }else if (array_key_exists(‘HTTP_CLIENT_IP’, $_SERVER)) { return $_SERVER[“HTTP_CLIENT_IP”]; } return ”; }
Here is an easier-to-read, slightly less efficient, way you could go about it. public static boolean validIP (String ip) { try { if ( ip == null || ip.isEmpty() ) { return false; } String[] parts = ip.split( “\\.” ); if ( parts.length != 4 ) { return false; } for ( String s : … Read more
So something to consider is that Formatter.formatIpAddress(int) is being deprecated: This method was deprecated in API level 12. Use getHostAddress(), which supports both IPv4 and IPv6 addresses. This method does not support IPv6 addresses. So using formatIpAddress(int) is likely not a good long term solution, although it will work. Here is a potential solution if … Read more
Stripping things down to basics this is what you would want to test with: import socket server = socket.socket() server.bind((“10.0.0.1”, 6677)) server.listen(4) client_socket, client_address = server.accept() print(client_address, “has connected”) while True: recvieved_data = client_socket.recv(1024) print(recvieved_data) This works assuming a few things: Your local IP address (on the server) is 10.0.0.1 (This video shows you how) … 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
No you can’t – IP addresses get reallocated and reassigned from time to time, so the mapping of IP to location will also change over time. If you want to find out the location that an IP address currently maps to you can either download a geolocation database, such as GeoLite from MaxMind, or use … 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
If you need 200ms for each of the 65536 ports (in the worst case, a firewall is blocking everything, thus making you hit your timeout for every single port), the maths is pretty simple: you need 13k seconds, or about 3 hours and a half. You have 2 (non-exclusive) options to make it faster: reduce … 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”]; ?>
When UrlFetchApp is used by the custom function and the script editor, I think that the difference is whether IPv6 is used, while the address of IPv4 is changed every run. In this case, the results of the script editor and custom menu are the same. I thought that this might be the reason of … Read more