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