cidr

Documentation

Overview

RFC-4632 Classless Inter-domain Routing notation handling https://www.rfc-editor.org/rfc/rfc4632

Index

• func Parse[A ip.Address[A]](f ip.Family[A], notation string) (network.Block[A], error)
• func ParseUnknown(notation string) (any, error)

Examples

• Parse
• ParseUnknown

Functions

func Parse

func Parse[A ip.Address[A]](f ip.Family[A], notation string) (network.Block[A], error)

Parses CIDR notation

Example

reservedForDocumentation, _ := cidr.Parse(ip.V6(), "2001:db8::/32")
printRangeDetails(reservedForDocumentation)

func ParseUnknown

func ParseUnknown(notation string) (any, error)

Parses CIDR notation where IP address family is unknown. Returns error if operand is not valid CIDR notation. Returns network.Block when oprand is valid.

Example

reservedForDocumentation := []string{
	"192.0.2.0/24",
	"198.51.100.0/24",
	"203.0.113.0/24",
	"2001:db8::/32",
}
for _, notation := range reservedForDocumentation {
	block, err := cidr.ParseUnknown(notation)
	if err != nil {
		panic(err)
	}
	switch addresses := block.(type) {
	case network.Block[ip.Addr4]:
		printRangeDetails(addresses)
	case network.Block[ip.Addr6]:
		printRangeDetails(addresses)
	}
}