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90 lines
2.7 KiB
90 lines
2.7 KiB
# IP |
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[](https://www.npmjs.com/package/ip) |
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IP address utilities for node.js |
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## Installation |
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### npm |
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```shell |
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npm install ip |
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``` |
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### git |
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```shell |
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git clone https://github.com/indutny/node-ip.git |
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``` |
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## Usage |
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Get your ip address, compare ip addresses, validate ip addresses, etc. |
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```js |
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var ip = require('ip'); |
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ip.address() // my ip address |
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ip.isEqual('::1', '::0:1'); // true |
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ip.toBuffer('127.0.0.1') // Buffer([127, 0, 0, 1]) |
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ip.toString(new Buffer([127, 0, 0, 1])) // 127.0.0.1 |
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ip.fromPrefixLen(24) // 255.255.255.0 |
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ip.mask('192.168.1.134', '255.255.255.0') // 192.168.1.0 |
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ip.cidr('192.168.1.134/26') // 192.168.1.128 |
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ip.not('255.255.255.0') // 0.0.0.255 |
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ip.or('192.168.1.134', '0.0.0.255') // 192.168.1.255 |
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ip.isPrivate('127.0.0.1') // true |
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ip.isV4Format('127.0.0.1'); // true |
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ip.isV6Format('::ffff:127.0.0.1'); // true |
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// operate on buffers in-place |
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var buf = new Buffer(128); |
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var offset = 64; |
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ip.toBuffer('127.0.0.1', buf, offset); // [127, 0, 0, 1] at offset 64 |
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ip.toString(buf, offset, 4); // '127.0.0.1' |
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// subnet information |
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ip.subnet('192.168.1.134', '255.255.255.192') |
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// { networkAddress: '192.168.1.128', |
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// firstAddress: '192.168.1.129', |
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// lastAddress: '192.168.1.190', |
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// broadcastAddress: '192.168.1.191', |
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// subnetMask: '255.255.255.192', |
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// subnetMaskLength: 26, |
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// numHosts: 62, |
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// length: 64, |
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// contains: function(addr){...} } |
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ip.cidrSubnet('192.168.1.134/26') |
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// Same as previous. |
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// range checking |
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ip.cidrSubnet('192.168.1.134/26').contains('192.168.1.190') // true |
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// ipv4 long conversion |
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ip.toLong('127.0.0.1'); // 2130706433 |
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ip.fromLong(2130706433); // '127.0.0.1' |
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``` |
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### License |
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This software is licensed under the MIT License. |
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Copyright Fedor Indutny, 2012. |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the |
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"Software"), to deal in the Software without restriction, including |
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without limitation the rights to use, copy, modify, merge, publish, |
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distribute, sublicense, and/or sell copies of the Software, and to permit |
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persons to whom the Software is furnished to do so, subject to the |
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following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN |
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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