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package proto
import (
"encoding/binary"
"net/netip"
)
// IPv4 represents IPv4 address as uint32 number.
//
// Not using netip.Addr because uint32 is 5 times faster,
// consumes 6 times less memory and better represents IPv4.
//
// Use ToIP helper for convenience.
type IPv4 uint32
func (v IPv4) String() string {
return v.ToIP().String()
}
// ToIP represents IPv4 as netaddr.IP.
func (v IPv4) ToIP() netip.Addr {
var buf [4]byte
binary.BigEndian.PutUint32(buf[:], uint32(v))
return netip.AddrFrom4(buf)
}
// ToIPv4 represents ip as IPv4. Panics if ip is not ipv4.
func ToIPv4(ip netip.Addr) IPv4 {
b := ip.As4()
return IPv4(binary.BigEndian.Uint32(b[:]))
}
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