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p2p/netutil: add AddrIP

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This commit is contained in:
Felix Lange 2019-06-06 15:25:53 +02:00
parent 1b15c6da33
commit e0290f4f7b
1 changed files with 33 additions and 0 deletions
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33
p2p/netutil/addrutil.go Normal file
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// Copyright 2016 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
}
}