IP address utilities for node.js
git clone https://github.com/indutny/node-ip.git
Get your ip address, compare ip addresses, validate ip addresses, etc.
varip=require('ip');ip.address()// my ip addressip.isEqual('::1','::0:1');// trueip.toBuffer('127.0.0.1')// Buffer([127, 0, 0, 1])ip.toString(newBuffer([127,0,0,1]))// 127.0.0.1ip.fromPrefixLen(24)// 255.255.255.0ip.mask('192.168.1.134','255.255.255.0')// 192.168.1.0ip.cidr('192.168.1.134/26')// 192.168.1.128ip.not('255.255.255.0')// 0.0.0.255ip.or('192.168.1.134','0.0.0.255')// 192.168.1.255ip.isPrivate('127.0.0.1')// trueip.isV4Format('127.0.0.1');// trueip.isV6Format('::ffff:127.0.0.1');// true// operate on buffers in-placevarbuf=newBuffer(128);varoffset=64;ip.toBuffer('127.0.0.1',buf,offset);// [127, 0, 0, 1] at offset 64ip.toString(buf,offset,4);// '127.0.0.1'// subnet informationip.subnet('192.168.1.134','255.255.255.192')// { networkAddress: '192.168.1.128',// firstAddress: '192.168.1.129',// lastAddress: '192.168.1.190',// broadcastAddress: '192.168.1.191',// subnetMask: '255.255.255.192',// subnetMaskLength: 26,// numHosts: 62,// length: 64,// contains: function(addr){...}}ip.cidrSubnet('192.168.1.134/26')// Same as previous.// range checkingip.cidrSubnet('192.168.1.134/26').contains('192.168.1.190')// true// ipv4 long conversionip.toLong('127.0.0.1');// 2130706433ip.fromLong(2130706433);// '127.0.0.1'This software is licensed under the MIT License.
Copyright Fedor Indutny, 2012.
Permission is hereby granted, free of charge, to any person obtaining acopy of this software and associated documentation files (the"Software"), to deal in the Software without restriction, includingwithout limitation the rights to use, copy, modify, merge, publish,distribute, sublicense, and/or sell copies of the Software, and to permitpersons to whom the Software is furnished to do so, subject to thefollowing conditions:
The above copyright notice and this permission notice shall be includedin all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESSOR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OFMERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. INNO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OROTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THEUSE OR OTHER DEALINGS IN THE SOFTWARE.
