Since Python 3.3 there is an ipaddress module in the stdlib that you can use. >>> import ipaddress >>> ipaddress.ip_address(‘192.168.0.1’).is_private True If using Python 2.6 or higher I would strongly recommend to use a backport of this module.
Check for valid IPv4: @if (@X)==(@Y) @end /* JScript comment @echo off cscript //E:JScript //nologo “%~f0” %* exit /b %errorlevel% @if (@X)==(@Y) @end JScript comment */ WScript.Quit(ValidateIPaddress(WScript.Arguments.Item(0))); function ValidateIPaddress(ipaddress) { return !(/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ipaddress)) } For valid IPv6 address: @if (@X)==(@Y) @end /* JScript comment @echo off cscript //E:JScript //nologo “%~f0” %* exit /b %errorlevel% @if (@X)==(@Y) … Read more
I believe you want to use the remote address instead: csocket.getRemoteSocketAddress().toString();
IP addresses are represented as bigendian []byte slices in go (the IP type) so will compare correctly using bytes.Compare. Eg (play) package main import ( “bytes” “fmt” “net” ) var ( ip1 = net.ParseIP(“216.14.49.184”) ip2 = net.ParseIP(“216.14.49.191”) ) func check(ip string) bool { trial := net.ParseIP(ip) if trial.To4() == nil { fmt.Printf(“%v is not an … Read more
You actually can use an inet function. Observe. main.c: #include <arpa/inet.h> main() { uint32_t ip = 2110443574; struct in_addr ip_addr; ip_addr.s_addr = ip; printf(“The IP address is %s\n”, inet_ntoa(ip_addr)); } The results of gcc main.c -ansi; ./a.out is The IP address is 54.208.202.125 Note that a commenter said this does not work on Windows.
Just wanted to add that instead of writing your own pattern you can use the build in one Resolv::IPv4::Regex require ‘resolv’ validates :gateway, :presence => true, :uniqueness => true, :format => { :with => Resolv::IPv4::Regex }
The easiest way to check the range is probably to convert the IP addresses to 32-bit integers and then just compare the integers. public class Example { public static long ipToLong(InetAddress ip) { byte[] octets = ip.getAddress(); long result = 0; for (byte octet : octets) { result <<= 8; result |= octet & 0xff; … Read more