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How to use the subnet function from ip

Find comprehensive JavaScript ip.subnet code examples handpicked from public code repositorys.

IP subnet is a JavaScript library that provides a set of functions for working with IP addresses and subnet masks.

netbot.js

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case "secondary": {
  const currentSecondaryInterface = currentConfig.secondaryInterface;
  const updatedConfig = { intf: currentConfig.monitoringInterface2 };
  const ipAddress = intf.ipAddress;
  const subnetMask = intf.subnetMask;
  const ipSubnet = iptool.subnet(ipAddress, subnetMask);
  updatedConfig.ip = ipAddress + "/" + ipSubnet.subnetMaskLength; // ip format is <ip_address>/<subnet_mask_length>
  const mergedSecondaryInterface = Object.assign({}, currentSecondaryInterface, updatedConfig); // if ip2 is not defined, it will be inherited from previous settings
  // redundant entries for backward compatitibility
  mergedSecondaryInterface.ipOnly = ipAddress;

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+ 11 other calls in file

SysManager.js

GitHub: firewalla/firewalla

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  return null;
}

// filter Carrier-Grade NAT address pool accordinig to rfc6598
filterPublicIp4(ipArray) {
  const rfc6598Net = iptool.subnet("100.64.0.0", "255.192.0.0")
  return ipArray.filter(ip => iptool.isPublic(ip) && !rfc6598Net.contains(ip));
}

filterPublicIp6(ip6Array) {

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+ 3 other calls in file

How does ip.subnet work?

IP subnet works by providing a set of functions that can be used to work with IP addresses and subnet masks. One of the key functions provided by this library is subnet.calculate(), which takes an IP address and a subnet mask as input and returns the network address, broadcast address, and number of usable hosts for the specified subnet. The function uses bitwise operators to perform logical operations on the IP address and subnet mask, allowing it to calculate the network address and broadcast address for the subnet. It then calculates the number of usable hosts by subtracting the network address and broadcast address from the total number of possible IP addresses in the subnet. Other functions provided by the IP subnet library include functions for converting between IP address and subnet mask notations, validating IP addresses and subnet masks, and generating random IP addresses within a specified subnet. These functions can be useful in situations where it is necessary to work with IP addresses and subnet masks, such as when configuring network devices or performing network analysis. By providing a set of convenient and reliable functions, IP subnet can help to simplify and streamline these tasks.

broadcast.js

GitHub: yue/crossclip

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this.key = crypto.createHmac('sha256', key).digest('hex').substr(0, 32)
this.iv = 'valar morghulis!'

this.ip = ip.address()
this.subnetMask = '255.255.255.0'
this.broadcastAddress = ip.subnet(this.ip, this.subnetMask).broadcastAddress

this.server = dgram.createSocket('udp4')
this.server.on('message', this.handleMessage.bind(this))

search.js

GitHub: stagehacks/Cue-View

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const addresses = interfaces[key];

for (let i = addresses.length; i--; ) {
  const address = addresses[i];
  if (address.family === 'IPv4' && !address.internal && address.address.substring(0, 3) !== '169') {
    let subnet = ip.subnet(address.address, address.netmask);
    let current = ip.toLong(subnet.firstAddress);
    let last = ip.toLong(subnet.lastAddress) - 1;
    address.searchTruncated = false;

+ 7 other calls in file

Ai Example

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const { subnet } = require("ip");

// Define an IP address and subnet mask
const ipAddress = "192.168.0.1";
const subnetMask = "255.255.255.0";

// Calculate the network address, broadcast address, and number of usable hosts for the subnet
const { networkAddress, broadcastAddress, numHosts } = subnet.calculate(
  ipAddress,
  subnetMask
);

// Output the results to the console
console.log(`IP address: ${ipAddress}`);
console.log(`Subnet mask: ${subnetMask}`);
console.log(`Network address: ${networkAddress}`);
console.log(`Broadcast address: ${broadcastAddress}`);
console.log(`Number of usable hosts: ${numHosts}`);

In this example, we use subnet.calculate() from the IP subnet library to calculate the network address, broadcast address, and number of usable hosts for a given IP address (ipAddress) and subnet mask (subnetMask). The function returns an object with three properties: networkAddress, broadcastAddress, and numHosts, which we output to the console along with the original IP address and subnet mask. By using the IP subnet library, we can easily perform these calculations and work with IP addresses and subnet masks in a convenient and reliable way.

validation.service.ts

GitHub: neighbourwang/angular

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    }
} else if (lineips.length == 2) {
    if (!this.validationService.isBlank(lineips[0]) && !this.validationService.isBlank(lineips[1])
        && this.isIP(lineips[0]) && this.isIP(lineips[1])) {
        if (ip.toLong(lineips[1]) >= ip.toLong(lineips[0])) {
            if (ip.subnet(cidr, mask).contains(lineips[0]) && ip.subnet(cidr, mask).contains(lineips[1])) 
            {
                if(lineips[0]!=networkIP && lineips[0]!=broadcaseIP && lineips[1]!=networkIP && lineips[1]!=broadcaseIP) continue;
                else {
                    console.log("one ip is networkIP or broadcaseIP");

utils.js

GitHub: frangoteam/FUXA

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        if (iface.interal === true) return;
        if (iface.family !== 'IPv4') return;
        nics.push({
            name: ifname,
            address: iface.address,
            broadcast: ip.subnet(iface.address, iface.netmask).broadcastAddress
        });
    });
});
resolve(nics);

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index.js

GitHub: DylanPiercey/local-devices

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for (var key in interfaces) {
  var addresses = interfaces[key]
  for (var i = addresses.length; i--;) {
    var address = addresses[i]
    if (address.family === 'IPv4' && !address.internal) {
      var subnet = ip.subnet(address.address, address.netmask)
      var current = ip.toLong(subnet.firstAddress)
      var last = ip.toLong(subnet.lastAddress) - 1
      while (current++ < last) result.push(ip.fromLong(current))
    }

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ip-range.js

GitHub: Lumerin-protocol/WalletCore

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  continue
}
for (let i = addresses.length; i--; ) {
  const address = addresses[i]
  if (address.family === 'IPv4' && !address.internal) {
    const subnet = ip.subnet(address.address, address.netmask)
    const ips = getIPsWithinRange(subnet.firstAddress, subnet.lastAddress)
    result.push(...ips)
  }
}

+ 2 other calls in file

main.js

GitHub: rjw57/network-label

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}

function processSpec(spec) {
  $('#outputTable').empty();
  lookupHost(spec.hn).then(function(data) {
    var n, i, subnet = ip.subnet(data.ip, spec.sm);
    console.log(subnet);
    addField('Name:', data.name);
    addField('IP:', data.ip);
    addField('Mask:', spec.sm);

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