34 lines
1.1 KiB
Go
34 lines
1.1 KiB
Go
// Copyright 2019 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package netutil
|
|
|
|
import "net"
|
|
|
|
// AddrIP gets the IP address contained in addr. It returns nil if no address is present.
|
|
func AddrIP(addr net.Addr) net.IP {
|
|
switch a := addr.(type) {
|
|
case *net.IPAddr:
|
|
return a.IP
|
|
case *net.TCPAddr:
|
|
return a.IP
|
|
case *net.UDPAddr:
|
|
return a.IP
|
|
default:
|
|
return nil
|
|
}
|
|
}
|