1
|
# IP
|
2
|
[](https://www.npmjs.com/package/ip)
|
3
|
|
4
|
IP address utilities for node.js
|
5
|
|
6
|
## Installation
|
7
|
|
8
|
### npm
|
9
|
```shell
|
10
|
npm install ip
|
11
|
```
|
12
|
|
13
|
### git
|
14
|
|
15
|
```shell
|
16
|
git clone https://github.com/indutny/node-ip.git
|
17
|
```
|
18
|
|
19
|
## Usage
|
20
|
Get your ip address, compare ip addresses, validate ip addresses, etc.
|
21
|
|
22
|
```js
|
23
|
var ip = require('ip');
|
24
|
|
25
|
ip.address() // my ip address
|
26
|
ip.isEqual('::1', '::0:1'); // true
|
27
|
ip.toBuffer('127.0.0.1') // Buffer([127, 0, 0, 1])
|
28
|
ip.toString(new Buffer([127, 0, 0, 1])) // 127.0.0.1
|
29
|
ip.fromPrefixLen(24) // 255.255.255.0
|
30
|
ip.mask('192.168.1.134', '255.255.255.0') // 192.168.1.0
|
31
|
ip.cidr('192.168.1.134/26') // 192.168.1.128
|
32
|
ip.not('255.255.255.0') // 0.0.0.255
|
33
|
ip.or('192.168.1.134', '0.0.0.255') // 192.168.1.255
|
34
|
ip.isPrivate('127.0.0.1') // true
|
35
|
ip.isV4Format('127.0.0.1'); // true
|
36
|
ip.isV6Format('::ffff:127.0.0.1'); // true
|
37
|
|
38
|
// operate on buffers in-place
|
39
|
var buf = new Buffer(128);
|
40
|
var offset = 64;
|
41
|
ip.toBuffer('127.0.0.1', buf, offset); // [127, 0, 0, 1] at offset 64
|
42
|
ip.toString(buf, offset, 4); // '127.0.0.1'
|
43
|
|
44
|
// subnet information
|
45
|
ip.subnet('192.168.1.134', '255.255.255.192')
|
46
|
// { networkAddress: '192.168.1.128',
|
47
|
// firstAddress: '192.168.1.129',
|
48
|
// lastAddress: '192.168.1.190',
|
49
|
// broadcastAddress: '192.168.1.191',
|
50
|
// subnetMask: '255.255.255.192',
|
51
|
// subnetMaskLength: 26,
|
52
|
// numHosts: 62,
|
53
|
// length: 64,
|
54
|
// contains: function(addr){...} }
|
55
|
ip.cidrSubnet('192.168.1.134/26')
|
56
|
// Same as previous.
|
57
|
|
58
|
// range checking
|
59
|
ip.cidrSubnet('192.168.1.134/26').contains('192.168.1.190') // true
|
60
|
|
61
|
|
62
|
// ipv4 long conversion
|
63
|
ip.toLong('127.0.0.1'); // 2130706433
|
64
|
ip.fromLong(2130706433); // '127.0.0.1'
|
65
|
```
|
66
|
|
67
|
### License
|
68
|
|
69
|
This software is licensed under the MIT License.
|
70
|
|
71
|
Copyright Fedor Indutny, 2012.
|
72
|
|
73
|
Permission is hereby granted, free of charge, to any person obtaining a
|
74
|
copy of this software and associated documentation files (the
|
75
|
"Software"), to deal in the Software without restriction, including
|
76
|
without limitation the rights to use, copy, modify, merge, publish,
|
77
|
distribute, sublicense, and/or sell copies of the Software, and to permit
|
78
|
persons to whom the Software is furnished to do so, subject to the
|
79
|
following conditions:
|
80
|
|
81
|
The above copyright notice and this permission notice shall be included
|
82
|
in all copies or substantial portions of the Software.
|
83
|
|
84
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
85
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
86
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
87
|
NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
88
|
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
89
|
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
90
|
USE OR OTHER DEALINGS IN THE SOFTWARE.
|