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// Package ipnet contains helper functions around net and IP
package ipnet
import (
"errors"
"net"
)
var errFailedToCastAddr = errors.New("failed to cast net.Addr to *net.UDPAddr or *net.TCPAddr")
// AddrIPPort extracts the IP and Port from a net.Addr
func AddrIPPort(a net.Addr) (net.IP, int, error) {
aUDP, ok := a.(*net.UDPAddr)
if ok {
return aUDP.IP, aUDP.Port, nil
}
aTCP, ok := a.(*net.TCPAddr)
if ok {
return aTCP.IP, aTCP.Port, nil
}
return nil, 0, errFailedToCastAddr
}
// AddrEqual asserts that two net.Addrs are equal
// Currently only supprots UDP but will be extended in the future to support others
func AddrEqual(a, b net.Addr) bool {
aUDP, ok := a.(*net.UDPAddr)
if !ok {
return false
}
bUDP, ok := b.(*net.UDPAddr)
if !ok {
return false
}
return aUDP.IP.Equal(bUDP.IP) && aUDP.Port == bUDP.Port
}
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