Utilities for use with IP. It has functions for IPv4, IPv6 and CIDR.

By rockcavera (rockcavera@gmail.com)

Basic usage

import iputils

let stringsIps = @["192.168.0.63", "0.0.0", "0", "256.0.0.1", "::1", "0:0:0:0:0:0:0:0", "2607:5300:60:37df::c4f3", ":::1"]

for ip in stringsIps:
  if isIpv4(ip):
    echo ip, " is IPv4!"
  
  elif isIpv6(ip):
    echo ip, " is IPv6!"
  
  else:
    echo ip, " not is IPv4 or IPv6!"

for ip in stringsIps:
  try:
    let parsed = parseIpv4(ip)
  except:
    echo ip, " could not parse how IPv4."
  
  try:
    let parsed = parseIpv6(ip)
  except:
    echo ip, " could not parse how IPv6."

for ip in stringsIps:
  var
    ipv4: Ipv4
    ipv6: Ipv6
  
  if isIpv4AndStore(ip, ipv4):
    echo "Stored: ", ipv4
  
  elif isIpv6AndStore(ip, ipv6):
    echo "Stored: ", ipv6


let
  startIpv4 = parseIpv4("192.168.0.0")
  endIpv4 = parseIpv4("192.168.5.100")
  cidrs4 = ipv4RangeToCidr(startIpv4, endIpv4)

for cidr in cidrs4:
  let (i, e) = cidrToIpv4Range(cidr)
  
  echo cidr, " contains IPv4 between ", i, " - ", e

let
  startIpv6 = parseIpv6("2607:5300:60:37df::c4f3")
  endIpv6 = parseIpv6("2607:5300:60:37df::ff:ffff")
  cidrs6 = ipv6RangeToCidr(startIpv6, endIpv6)

for cidr in cidrs6:
  let (i, e) = cidrToIpv6Range(cidr)
  
  echo cidr, " contains IPv6 between ", i, " - ", e