ipx is a library which provides a set of extensions on go's standart IP functions in net package.
ipx is fully compatible with net package. Also, it implements the necessary functions in net package such as ParseIP, ParseCIDR, CIDRMask etc. Therefore, don't need to import net package additionally.
go get github.com/hakansa/ipx
The following examples shows some common use cases for ipx.
You can access the example in The Go Playground
package main
import (
"fmt"
"github.com/hakansa/ipx"
)
func main() {
// ParseIP throws ErrInvalidIP if given ip is not valid
ip, err := ipx.ParseIP("256.256.256.256")
if err != nil {
// invalid ip
}
// MustParseIP throws a panic if the given string is not a valid IP address
ip = ipx.MustParseIP("172.16.16.1")
// IPv4 returns the IP address (in 16-byte form) of the IPv4 address a.b.c.d.
ip = ipx.IPv4(172, 16, 16, 1)
// IsV4 returns true for ipv4 addresses
ip.IsV4() // true
// IsV6 returns true for ipv6 addresses
ip.IsV6() // false
// Before checks i is before than given ip
ip.Before(ipx.IPv4(172, 16, 16, 2)) // true
// IsPrivate returns true if ip is in a private network
ip.IsPrivate() // true
// ToInt returns the decimal representation of ip
// ToInt returns 0 for ipv6 addresses
ip.ToInt() // 2886733825
// ToBigInt returns the decimal representation of ip in math.BigInt format
// ToBigInt can be used for ipv4 and ipv6 addresses
ip.ToBigInt() // 2886733825
// ToBinary returns the binary representation of ip
ip.ToBinary() // 10101100000100000001000000000001
// ToHex returns the hex representation of ip
ip.ToHex() // AC101001
// GetNext returns next IP
ip.GetNext() // 172.16.16.2
// GetNextN returns n'th next IP
ip.GetNextN(uint32(10)) // 172.16.16.11
// GetAllNextN returns an IP array
// that contains all IP's until n'th next IP
ip.GetAllNextN(uint32(3)) // []IP{ 172.16.16.2 , 172.16.16.3 , 172.16.16.4 }
// GetPrevious returns previous IP
ip.GetPrevious() // 172.16.16.0
// GetPreviousN returns n'th previous IP
ip.GetPreviousN(uint32(2)) // 172.16.15.255
// GetAllPreviousN returns an IP array
// that contains all IP's from n'th previous IP
ip.GetAllPreviousN(uint32(3)) // []IP{ 172.16.15.254 , 172.16.15.255 , 172.16.16.0 }
// FromInt returns IP address for given integer
ip = ipx.FromInt(uint32(2886733825)) // 172.16.16.1
// RandomIPv4 returns a random IPv4 address
ip = ipx.RandomIPv4() // x.y.z.t
// All the other methods that the net package provides can be used with ipx
ip.DefaultMask()
ip.Equal(ipx.IPv4(172, 16, 16, 1))
ip.IsGlobalUnicast()
ip.IsInterfaceLocalMulticast()
ip.IsLinkLocalMulticast()
ip.IsLinkLocalUnicast()
ip.IsLoopback()
ip.IsMulticast()
ip.IsUnspecified()
ip.MarshalText()
ip.Mask(IPMask{})
ip.String()
ip.To4()
ip.To16()
ip.UnmarshalText()
}package main
import (
"fmt"
"github.com/hakansa/ipx"
)
func main() {
// ParseCIDR parses a string in CIDR notation
_, ipNet, _ := ipx.ParseCIDR("172.16.16.0/24")
// MustParseIP throws a panic if the given string is not a valid IP Network
ipNet = ipx.MustParseCIDR("172.16.16.0/24")
// IPNumber returns the number of ip addresses in the network
ipNet.IPNumber() // 256
// UsableIPNumber returns the number of usable ip addresses in the network
// Basically it excludes the network address and broadcast address
ipNet.UsableIPNumber() // 254
// NetworkSize returns the network size
ipNet.NetworkSize() // 24
// FirstIP returns the first IP in network
ipNet.FirstIP() // 172.16.16.0
// FirstUsableIP returns the first usable (addressable) IP in network
ipNet.FirstUsableIP() // 172.16.16.1
// LastIP returns the list IP in network
ipNet.LastIP() // 172.16.16.255
// LastUsableIP returns the last usable (addressable) IP in network
ipNet.LastUsableIP() // 172.16.16.254
// GetAllIP returns all IP's in the network as an array
ipNet.GetAllIP() // []IP{ 172.16.16.0, 172.16.16.1, ... , 172.16.16.255 }
// GetAllUsableIP returns all usable IP's in the network as an array
ipNet.GetAllUsableIP() // []IP{ 172.16.16.1, 172.16.16.2, ... , 172.16.16.254 }
// RandomIP returns a random ip in the network
ipNet.RandomIP() // 172.16.16.X
// Intersects whether the networks intersects the other network
ipNet.Intersects(ipx.MustParseCIDR("172.16.15.0/23")) // true
// All the other methods that the net package provides can be used with ipx
ipNet.Contains(ipx.IPv4(172, 16, 16, 23))
ipNet.Network()
ipNet.String()
}package main
import (
"fmt"
"github.com/hakansa/ipx"
)
func main() {
// ParseIPRange parses x and y as an IPRange
// Upper ip's boundary is excluded
ipRange, _ := ipx.ParseIPRange("172.16.16.0", "172.16.16.100")
// ParseIPRange throws a panic if the given strings is not valid IP addresses
ipRange = ipx.MustParseIPRange("172.16.16.0", "172.16.16.100")
// NewIPRange creates a new IPRange
ipRange = ipx.NewIPRange(ipx.IPv4(172, 16, 16, 0), ipx.IPv4(172, 16, 16, 100))
// Order is not important when creating IPRange
ipRange = ipx.MustParseIPRange("172.16.16.100", "172.16.16.0")
// Contains checks if ip is in range
ipRange.Contains(ipx.IPv4(172, 16, 16, 75)) // true
// IPNumber returns the number of ip addresses in IPRange
ipRange.IPNumber() // 100
// FirstIP returns the first IP in IPRange
ipRange.FirstIP() // 172.16.16.0
// LastIP returns the list IP in IPRange
ipRange.LastIP() // 172.16.16.99
// GetAllIP returns all IP's in IPRange as an array
ipRange.GetAllIP() // []IP{ 172.16.16.0, 172.16.16.1, ... , 172.16.16.99 }
// RandomIP returns a random ip in IPRange
ipRange.RandomIP() // 172.16.16.X (0 <= X < 100)
// Intersects whether the IPRange intersects other IPRange
ipRange.Intersects(ipx.MustParseIPRange("172.16.16.50", "172.16.16.150")) // true
}