node工具之node-ip

node-ip

node.js用来获取id地址的工具
use

var ip = require('ip');

ip.address() // my ip address

ip.isEqual('::1', '::0:1'); // true

ip.toBuffer('127.0.0.1') // Buffer([127, 0, 0, 1])

ip.toString(new Buffer([127, 0, 0, 1])) // 127.0.0.1

ip.fromPrefixLen(24) // 255.255.255.0

ip.mask('192.168.1.134', '255.255.255.0') // 192.168.1.0

ip.cidr('192.168.1.134/26') // 192.168.1.128

ip.not('255.255.255.0') // 0.0.0.255

ip.or('192.168.1.134', '0.0.0.255') // 192.168.1.255

ip.isPrivate('127.0.0.1') // true

ip.isV4Format('127.0.0.1'); // true

ip.isV6Format('::ffff:127.0.0.1'); // true

// operate on buffers in-place

var buf = new Buffer(128);

var offset = 64;

ip.toBuffer('127.0.0.1', buf, offset);  // [127, 0, 0, 1] at offset 64

ip.toString(buf, offset, 4);            // '127.0.0.1'

// subnet information

ip.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 checking

ip.cidrSubnet('192.168.1.134/26').contains('192.168.1.190') // true

// ipv4 long conversion

ip.toLong('127.0.0.1'); // 2130706433

ip.fromLong(2130706433); // '127.0.0.1'
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node-ip
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node工具之node-ip

node-ip

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